grizzly rotary table free sample

The T25937 manual was written by our U.S. based Technical Documentation Department and is packed with useful information. The complete and easy-to-read manual makes it easier to assemble and maintain your rotary table.

The Grizzly Customer Service and Technical Support Teams are U.S. based. Parts for the rotary table may be available online and shipped from the Grizzly parts warehouse in Springfield, MO.

The Grizzly Customer Service and Technical Support Teams are U.S. based. Parts for the rotary table may be available online and shipped from the Grizzly parts warehouse in Springfield, MO.

One complete turn of the handwheel moves the table 4 degrees. The micro collar is graduated in steps of 1 minute and the vernier scale can be set to indicate to 20 seconds.

The G1049 manual was written by our U.S. based Technical Documentation Department and is packed with useful information. The complete and easy-to-read manual makes it easier to assemble and maintain your rotary table.

The Grizzly Customer Service and Technical Support Teams are U.S. based. Parts for the rotary table may be available online and shipped from the Grizzly parts warehouse in Springfield, MO.

The H7527 manual was written by our U.S. based Technical Documentation Department and is packed with useful information. The complete and easy-to-read manual makes it easier to assemble and maintain your rotary table.

The Grizzly Customer Service and Technical Support Teams are U.S. based. Parts for the rotary table may be available online and shipped from the Grizzly parts warehouse in Springfield, MO.

The G9293 manual was written by our U.S. based Technical Documentation Department and is packed with useful information. The complete and easy-to-read manual makes it easier to assemble and maintain your rotary table.

The Grizzly Customer Service and Technical Support Teams are U.S. based. Parts for the rotary table may be available online and shipped from the Grizzly parts warehouse in Springfield, MO.

The G9292 manual was written by our U.S. based Technical Documentation Department and is packed with useful information. The complete and easy-to-read manual makes it easier to assemble and maintain your rotary table.

The Grizzly Customer Service and Technical Support Teams are U.S. based. Parts for the rotary table may be available online and shipped from the Grizzly parts warehouse in Springfield, MO.

The H2677 manual was written by our U.S. based Technical Documentation Department and is packed with useful information. The complete and easy-to-read manual makes it easier to assemble and maintain your rotary table.

The Grizzly Customer Service and Technical Support Teams are U.S. based. Parts for the rotary table may be available online and shipped from the Grizzly parts warehouse in Springfield, MO.

6" Vertical & HorizontalRotary Table with DividingPlates & TailstockMODEL H7527Instruction ManualCopyright © MARCH, 2005 By Grizzly Industrial, Inc., revised july, 2012 (ST)Warning: No portion of this manual may be reproduced in any shapeOr form without the written approval of Grizzly Industrial, inc.#PC7045 printed in INDIA

Table of ContentsINTRODUCTION............................................................................................................................... 2Foreword..................................................................................................................................... 2Contact Info................................................................................................................................ 2Machine Data Sheet................................................................................................................... 2Identification................................................................................................................................ 3SECTION 1: SAFETY....................................................................................................................... 4Safety Instructions for Machinery............................................................................................... 4SECTION 2: SET UP......................................................................................................................... 6Set Up Safety.............................................................................................................................. 6Items Needed For Set Up........................................................................................................... 6Unpacking................................................................................................................................... 6Inventory..................................................................................................................................... 7Clean Up..................................................................................................................................... 8Handwheel Installation................................................................................................................ 8Mounting to Table....................................................................................................................... 9Alignment.................................................................................................................................. 10SECTION 3: OPERATIONS............................................................................................................ 11Operation Safety....................................................................................................................... 11Rotary Table............................................................................................................................. 11Vernier Scale............................................................................................................................ 12Angular Indexing....................................................................................................................... 14Installing Dividing Plates........................................................................................................... 14Simple Indexing........................................................................................................................ 15Tailstock.................................................................................................................................... 18SECTION 4: MAINTENANCE......................................................................................................... 19Rotary Table............................................................................................................................. 19Maintenance............................................................................................................................. 19Unpainted Cast Iron.................................................................................................................. 19H7527 Parts Breakdown........................................................................................................... 20H7527 Parts List....................................................................................................................... 21WARRANTY AND RETURNS......................................................................................................... 22

INTRODUCTIONForewordContact InfoWe are proud to offer the Model H7527 RotaryTable. This machine is part of a growing Grizzlyfamily of fine metalworking machinery. Whenused according to the guidelines set forth in thismanual, you can expect years of trouble-free,enjoyable operation and proof of Grizzly’s commitmentto customer satisfaction.We are pleased to provide this manual with theModel H7527 Rotary Table. It was written to guideyou through assembly, review safety considerations,and cover general operating procedures.The specifications, drawings, and photographsillustrated in this manual represent the ModelH7527 Rotary Table as supplied when the manualwas prepared. For your convenience, we alwayskeep current Grizzly manuals available on ourwebsite at www.grizzly.com. Any updates toyour machine will be reflected in these manualsas soon as they are complete.If you have any comments regarding this manual,please write to us at the address below:Grizzly Industrial, Inc.C/O Technical Documentation ManagerP.O. Box 2069Bellingham, WA 98227-2069We stand behind our machines. If you have anyservice questions or parts requests, please call orwrite us at the location listed below.Grizzly Industrial, Inc.1203 Lycoming Mall CircleMuncy, PA 17756Phone: (570) 546-9663Fax: (800) 438-5901E-Mail: techsupport@grizzly.comWeb Site: http://www.grizzly.comMACHINE DATAsheetCustomer Service #: (570) 546-9663 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901Model H7527 6" Rotary TableWorm Gear Ratio..........................................................................................90:1Table Diameter..............................................................................................5.91"Table Height...................................................................................................3.11"Base Dimensions .......................................................................W 8" x D 5.85"Vertical Base Holes............................................................. 1 ⁄2" @ 4 1 ⁄2" CentersCenter Sleeve..............................................................................................MT#2Weight.........................................................................................................26 lbs.-2- H7527 6" Rotary Table

IdentificationBDCHAEFGFigure 1. Main view of rotary table features.A. MT#2 Center Hole Taper—Used for quicksetups by placing a dead center into thetaper and aligning centers, picking up holecenters, etc. and general machining operations.B. Rotary Table Locks—Used during millingoperations to extend the life of the rotarytable and ensure that accuracy is not compromised.Simply tighten the handles to lockthe table.C. Free Rotation Lever—Allows the operatorto rotate the table by hand without havingto turn the crank handle by disengaging theworm gear.E. Calibrated Scale with Vernier—Allows preciserotary movements. The handwheel dialhas graduation of 2 minutes. The vernierscale has graduations of 20 seconds.F. Table Scale—The scale reads from 0˚-360˚in one degree graduations.G. Dividing Plates—Allows for precision divisionsof a degree.H. Sector Arm—A positioning device that representsa fraction of a hole circle, speedingthe process of locating hole position on thedividing plate.D. Free Rotation Lever Lock—This locks thefree rotation lever while keeping the wormgear engaged to maintain accuracy duringoperation.H7527 6" Rotary Table -3-

SECTION 1: SAFETYFor Your Own Safety, Read InstructionManual Before Operating this MachineThe purpose of safety symbols is to attract your attention to possible hazardous conditions. Thismanual uses a series of symbols and signal words which are intended to convey the level ofimportance of the safety messages. The progression of symbols is described below. Rememberthat safety messages by themselves do not eliminate danger and are not a substitute for properaccident prevention measures.Indicates an imminently hazardous situation which, if not avoided,WILL result in death or serious injury.Indicates a potentially hazardous situation which, if not avoided,COULD result in death or serious injury.NOTICEIndicates a potentially hazardous situation which, if not avoided,MAY result in minor or moderate injury. It may also be used to alertagainst unsafe practices.This symbol is used to alert the user to useful information aboutproper operation of the machine.Safety Instructions for Machinery1. READ THROUGH THE ENTIRE MANUALBEFORE STARTING MACHINERY.Machinery presents serious injury hazardsto untrained users.2. ALWAYS USE ANSI APPROVEDSAFETY GLASSES WHEN OPERATINGMACHINERY. Everyday eyeglasses onlyhave impact resistant lenses, they areNOT safety glasses.3. ALWAYS WEAR AN ANSI APPROVEDRESPIRATOR WHEN OPERATINGMACHINERY THAT PRODUCES DUST.Wood dust is a carcinogen and can causecancer and severe respiratory illnesses.4. ALWAYS USE HEARING PROTECTIONWHEN OPERATING MACHINERY.Machinery noise can cause permanenthearing damage.5. WEAR PROPER APPAREL. DO NOTwear loose clothing, gloves, neckties, rings,or jewelry which may get caught in movingparts. Wear protective hair covering to containlong hair and wear non-slip footwear.6. NEVER OPERATE MACHINERY WHENTIRED, OR UNDER THE INFLUENCE OFDRUGS OR ALCOHOL. Be mentally alertat all times when running machinery.-4- H7527 6" Rotary Table

Safety Instructions for Machinery7. Only allow trained and properlysupervised personnel tooperate machinery. Make sure operationinstructions are safe and clearlyunderstood.8. KEEP CHILDREN AND VISITORS AWAY.Keep all children and visitors a safe distancefrom the work area.9. MAKE WORKSHOP CHILD PROOF. Usepadlocks, master switches, and removestart switch keys.10. NEVER LEAVE WHEN MACHINE ISRUNNING. Turn power off and allow allmoving parts to come to a complete stopbefore leaving machine unattended.11. DO NOT USE IN DANGEROUSENVIRONMENTS. DO NOT use machineryin damp, wet locations, or where anyflammable or noxious fumes may exist.12. KEEP WORK AREA CLEAN AND WELLLIT. Clutter and dark shadows may causeaccidents.17. REMOVE ADJUSTING KEYS ANDWRENCHES. Make a habit of checking forkeys and adjusting wrenches before turningmachinery ON.18. CHECK FOR DAMAGED PARTSBEFORE USING MACHINERY. Checkfor binding and alignment of parts, brokenparts, part mounting, loose bolts, and anyother conditions that may affect machineoperation. Repair or replace damagedparts.19. USE RECOMMENDED ACCESSORIES.Refer to the instruction manual for recommendedaccessories. The use of improperaccessories may cause risk of injury.20. DO NOT FORCE MACHINERY. Work atthe speed for which the machine or accessorywas designed.21. SECURE WORKPIECE. Use clamps ora vise to hold the workpiece when practical.A secured workpiece protects yourhands and frees both hands to operate themachine.13. USE A GROUNDED EXTENSION CORDRATED FOR THE MACHINE AMPERAGE.Undersized cords overheat and lose power.Replace extension cords if they becomedamaged. DO NOT use extension cordsfor 220V machinery.14. ALWAYS DISCONNECT FROM POWERSOURCE BEFORE SERVICINGMACHINERY. Make sure switch is in OFFposition before reconnecting.22. DO NOT OVERREACH. Keep proper footingand balance at all times.23. MANY MACHINES WILL EJECT THEWORKPIECE TOWARD THE OPERATOR.Know and avoid conditions that cause theworkpiece to "kickback."24. ALWAYS LOCK MOBILE BASES(IF USED) BEFORE OPERATINGMACHINERY.15. MAINTAIN MACHINERY WITH CARE.Keep blades sharp and clean for best andsafest performance. Follow instructions forlubricating and changing accessories.16. MAKE SURE GUARDS ARE IN PLACEAND WORK CORRECTLY BEFOREUSING MACHINERY.H7527 6" Rotary Table -5-

SECTION 2: SET UPSet Up SafetyItems Needed ForSet UpThis machine presentsserious injury hazardsto untrained users. Readthrough this entire manualto become familiar withthe controls and operationsbefore starting themachine!Wear safety glasses duringthe entire set up process!The following items are needed to complete theset up process, but are not included with yourmachine:DescriptionQty• Hex Wrench 5mm....................................... 1• Hex Wrench 2.5mm.................................... 1• Open End Wrench 15mm........................... 1• T-Bolts, Studs & Hex Nuts 1 ⁄2".................... 2• Open End Wrench or Socket 3 ⁄4"................. 1• Clamp Set (optional)................................... 1UnpackingThe Model H7527 was carefully packed when itleft our warehouse. If you discover the machineis damaged after you have signed for delivery,please immediately call Customer Service at(570) 546-9663 for advice.Save the containers and all packing materials forpossible inspection by the carrier or its agent.Otherwise, filing a freight claim can be difficult.When you are completely satisfied with the conditionof your shipment, you should inventory thecontents.-6- H7527 6" Rotary Table

InventoryBox 2: (Figure 3)QtyA. Tailstock...................................................... 1After all the parts have been removed from thetwo boxes, you should have the following items:Box 1: (Figure 2)QtyA. Rotary Table............................................... 1B. Handwheel.................................................. 1C. Handwheel Handle...................................... 1D. T-Bolts, Studs, & Nuts 8mm....................... 4E. Step Blocks.......................................... 2 pairF. Dividing Plates............................................ 3G. Sector Arm.................................................. 1H. Sector Arm Spring...................................... 1I. Crank Handle w/Pin.................................... 1J. Phillips Head Screws M5-.8 x 10................ 3K. Key 3 x 3 x 8............................................... 1L. Cap Screw M6-1 x 15................................. 1M. Special Washer........................................... 1AKL MBFigure 3. Tailstock.In the event that any nonproprietary parts aremissing (e.g. a nut or a washer), we would beglad to replace them, or for the sake of expediency,replacements can be obtained at your localhardware store.CFIDGH J EFigure 2. Inventory.H7527 6" Rotary Table -7-

Clean UpThe unpainted surfaces are coated with a waxyoil to protect them from corrosion during shipment.Remove this protective coating with a solventcleaner or citrus-based degreaser such asGrizzly’s G7895 Degreaser. To clean thoroughly,some parts may need to be removed. For optimumperformance from your machine, makesure you clean all moving parts or slidingcontact surfaces that are coated. Avoid chlorine-basedsolvents, such as acetone or brakeparts cleaner, as they may damage painted surfacesshould they come in contact. Always followthe manufacturer’s instructions when using anytype of cleaning product.HandwheelInstallationComponents and Hardware Needed: QtyHandwheel......................................................... 1Handwheel Handle............................................. 1Key 3 x 3 x 8...................................................... 1Cap Screw M6-1 x 15........................................ 1Special Washer 6mm......................................... 1Tools Needed:QtyHex Wrench 5mm.............................................. 1Open End Wrench 15mm.................................. 1To install the handwheel:1. Remove the M6-1 x 15 cap screw and specialwasher from the shaft.Gasoline and petroleumproducts have low flashpoints and could causean explosion or fire ifused to clean machinery.DO NOT use gasoline orpetroleum products toclean the machinery.2. Insert the key into the keyway (see Figure4).3. Slide the handwheel on the shaft and replacethe special washer and the M6-1 x 15 capscrew and tighten.4. Thread the handwheel handle into thehandwheel and tighten with a 15mmwrench.Many of the solventscommonly used to cleanmachinery can be toxicwhen inhaled or ingested.Lack of ventilationwhile using these solventscould cause seriouspersonal health risksor fire. Take precautionsfrom this hazard by onlyusing cleaning solventsin a well ventilated area.Figure 4. Key placement.-8- H7527 6" Rotary Table

Mounting to TableComponents and Hardware Needed: QtyRotary Table...................................................... 1T-Bolts, Nuts, Studs & Hex Nuts 1 ⁄2".................. 2Clamp Set (optional).......................................... 1Tools Needed:QtyOpen End Wrench or Socket 3 ⁄4......................... 1Before installing the Model H7527 Rotary Table toyour mill table, make sure your mill table and millspindle are correctly aligned to each other. Referto your mill manual for this procedure.To mount the rotary table:1. Disconnect power to the milling machinebefore installing the rotary table!Figure 5. Mounting to table.2. Position the 1 ⁄2" T-bolt slots on the rotarytable over the T-slots in the milling table.3. Insert the T-slot nuts into the milling tablegrooves.4. Secure the rotary table making sure the boltsare tight. Holding the table rigid will help withaccuracy, efficiency and general safety (seeFigure 5).Note—The T-slots for the vertical set-up ofthe rotary table are 4.5" between centers.You will need to have the same distancebetween centers on your milling table to useT-nuts and bolts. If your milling table hasdifferent T-slot centers, you will need to usestep blocks or clamps to secure the rotarytable (see Figure 6).Figure 6. Vertical mounting.Make sure the rotary table is secured to themilling table. Check the T-slot clamps beforeeach cutting operation. If rotary table is notsecured, serious personal injury and damageto your mill and rotary table could result.H7527 6" Rotary Table -9-

AlignmentThere are many ways to align the Model H7527 toa vertical mill spindle. However, aligning the centerof the rotary table to the spindle is essential forachieving quality results.Note—Account for the edge finder radius anduse a precision measuring instrument whendetermining rotary table diameter.After you have mounted the table, you maychoose one of the following examples to alignthe spindle accurately to the center of the rotarytable:1. Use a test indicator to indicate the insidediameter center hole (see Models G9610,G9611 & G9612 in the current Grizzly catalog).Position the spindle over the center ofthe rotary table and touch the test indicatorto the inside diameter of the center hole(see Figure 7). Rotate the spindle by handand note the movement on the dial. Adjustthe X & Y axis until the test indicator reads"0" around the complete circumference ofthe center hole. Lock the table in place andzero out the dials. (Remember to rotate thespindle and not the rotary table.)Figure 8. Locations for edge finding.3. The fastest and most accurate method ofcentering your rotary table is to make atapered center finder. If you have access toa lathe, make a simple conical center finder(see Figure 9). More advanced machinistsmay choose to make a center finder thatmatches the taper of the rotary table centerhole. Tighten the rotary table T-bolts. Colletthe center finder in the spindle. Lower thequill and center finder into the center hole,adjust the table in the X & Y axis until all surfacesmate equally. Lock the table in placeand zero out the dials.Figure 7. Finding the center.2. Use an edge finder, such as the GrizzlyModel H2939, to locate the center of therotary table by contacting two outside edges(Figure 8) and then moving the mill table halfof the rotary table diameter in both directions.Adjust the table in the X & Y axis, lock thetable in position and zero out the dials.Figure 9. Conical and MT#2 center finders.-10- H7527 6" Rotary Table

SECTION 3: OPERATIONSOperation SafetyRotary TableDamage to your eyes, lungs, and ears couldresult from using this machine withoutproper protective gear. Always wear safetyglasses, a respirator, and hearing protectionwhen operating this machine.Loose hair and clothingcould get caught inmachinery and cause seriouspersonal injury. Keeploose clothing and longhair away from movingmachinery.NOTICEIf you have never used this type of machineor equipment before, We strongly recommendthat you read books, trade magazines,or get formal training before beginningany projects. Regardless of the contentin this section, Grizzly Industrial willnot be held liable for accidents caused bylack of training.The primary use of the rotary table is for machiningshapes, holes, and arcs. Dividing plates, alsoknown as index plates, can be added when equaldivisions of a circle are required.Locking the free rotation lever and then turningthe handwheel engages a precision worm gear.The worm gear ratio is 90:1. Ninety turns rotatethe table 360 degrees. One complete turn of thehandwheel rotates the table 4 degrees. Lockingthe free rotation lever lock ensures the gear staysengaged and maintains your reference (seeFigure 10).Disengaging the free rotation lever allows the tableto rotate freely without turning the handwheel.After doing this, the table scale will need to becalibrated to the handwheel scale so the zeroesmeet. The easiest way to do this is to engage thegear, return the table to the zero position, thenloosen the set screw on the handwheel dial, andposition it to zero.Set ScrewFree Rotation Lever LockFree Rotation LeverFigure 10. Worm gear controls.H7527 6" Rotary Table -11-

Vernier ScaleThe Model H7527 Rotary Table comes suppliedwith a scale marked in whole degrees along theedge of the table. The handwheel dial is markedwith degrees with divisions in 2 minutes (2").Graduations of 20 seconds (20") are on the vernierscale in Figure 11.VernierA60 0 60HandwheelWhen the handwheel is rotated clockwise, graduationsto the left of the “0” on the vernier scaleare used. When the handwheel is rotated counterclockwisegraduations on the right hand sideare used.We will be setting the table to 16˚ 10" 40" in thefirst example below. This exercise assumes thetable position starts at 0˚, as read along the edgeof the table, and that the “0” on the handwheeldial and the “0” on the vernier scale are aligned.For these instructions, refer to Figure 11.Example 1:1. Rotate the handwheel 4 times in the clockwisedirection. Watch for the “0” marker onthe dial and slow down the rotation as the “0”comes into view the 4 th time. Stop on the "0".You are at 16° (see Figure A).2. Now rotate the dial clockwise 5 graduationsto align with the "0" on the vernier. You arenow at 16° 10" (see Figure B).B30 0 3060 0 6030 0 3060 0 603. On the left of the vernier is the 40" markhighlighted in Figure B. The first graduationon the dial to the left of the 40" mark needsto be aligned with the 40" mark on the vernieras shown in Figure C. You are now at 16°10" 40".C30030Note— The handwheel should not be rotatedpast this point. If it is, rotate it counterclockwiseone full turn and “sneak” up on the markagain. Once you are satisfied with the tableposition lock it in place with the table locks.Figure 11. Vernier scale adjustments.Continued on next page-12- H7527 6" Rotary Table

Example 2:For this example we will use a measurement of17° 11" 20". Since the graduated dial has 2" divisions,one extra step is needed to arrive at theodd number minute. We will need to add sixtyseconds on the vernier to make one additionalminute on the handwheel dial.Again, this exercise assumes the table positionstarts at 0˚, as read along the edge of the table,and that the “0” on the handwheel dial and thevernier scale are aligned. For these instructions,refer to Figure 12.1. As in the previous example, rotate thehandwheel 4 times in the clockwise direction.Continue past 1 ⁄4 turn or 1°, to the number 1on the dial. You are now at 17° (see FigureA).2. On the left of the vernier is the 60" mark highlightedin Figure B. The nearest graduationon the dial to the left of the 60" mark needs tobe aligned with the 60" mark on the vernier.You are now at 17° 11". We just added thesixty seconds we needed to make the oddnumbered minute. (From 10" to 11".)VernierAB60 0 6030 1 3060 0 6030 1 3060 0 60Handwheel3. Figure C highlights the 20" mark. The nearestgraduation on the dial to the left of the 20"mark needs to be aligned with the 20" markon the vernier. You are now at 17° 11" 20"(see Figure D).Note— The handwheel should not be rotatedpast this point. If it is, rotate it counterclockwiseone full turn and “sneak” up on the markagain. Once you are satisfied with the tableposition, lock it in place with the table locks.C30 1 3060 0 60D30 1 30Figure 12. More vernier scale adjustments.H7527 6" Rotary Table -13-

Angular IndexingBasic Example:You are making a flange and need to place sixholes 60° apart for the bolt pattern in Figure 13.60°Installing DividingPlatesThree dividing plates are included with the ModelH7527.Components and Hardware Needed: QtyDividing Plate 15, 16, 17, 18, 19 & 20 hole....... 1Dividing Plate 21, 23, 27, 29, 31 & 33 hole....... 1Dividing Plate 37, 39, 41, 43, 47 & 49 hole....... 1Sector Arm......................................................... 1Sector Arm Spring.............................................. 1Crank Handle w/Indexing Pin............................ 1Phillips Head Screws M5-.8 x 10....................... 3Tools Needed:QtyHex Wrench 5mm.............................................. 1Phillips Head Screwdriver.................................. 1To install a dividing plate:Figure 13. Flange layout.Crank turns = 90 ⁄NN = the desired division number (6).90/6 = 15 full crank turns15 turns = 60°1. Turn the handwheel before making the firsthole to take up any play in the worm gear.2. Make your first hole then turn the crank 15times.Note—When you are cranking to a desirednumber and crank too far, do not back up tothe number. You must back up one revolutionthen dial back to the desired number, thenlock the table in place to locate the secondhole. This procedure eliminates backlash inthe worm gear.1. Remove the crank handle cap screw andspecial washer.2. Remove the handwheel and key from theshaft. Tape the key to the handwheel for safekeeping.3. Insert the dividing plate, counter bores facingout, and secure it with the provided screws.4. Place the sector arm assembly over the shaftFigure 14).Figure 14. Installing dividing plate.-14- H7527 6" Rotary Table

5. Slide the sector arm spring into the slot onthe shaft to hold the sector arms tight againstthe dividing plate (see Figure 15).Simple IndexingSimple or plain indexing is the most common formof indexing used because of the large number ofdivisions available with the speed, repeatabilityand precision attained.The Model H7527 has three dividing plateswith the following hole circles:Plate: 15, 16, 17, 18, 19, 20.Plate: 21, 23, 27, 29, 31, 33.Plate: 37, 39, 41, 43, 47, 49.Basic Example:Figure 15. Inserting sector arm spring.6. Install the crank handle with the indexing pinand secure it with the special washer and capscrew (see Figure 16).Note—The crank handle slot adjusts so theindexing pin sits directly above the hole circlechosen. To ease installation, place the pin inthe desired hole circle, then tighten the capscrew.Cap ScrewYou are now making a flange with a hole patternthat has 17 holes.Crank turns = 90 ⁄NN = the desired division number (17).90⁄17 = 5 5 ⁄171. On the index table on Page 17, look up 17in the number of divisions column to find thecorrect index circle plus the required numberof turns. The number of turns required in thiscase is 5 5 ⁄17 turns. The 17 hole circle dividingplate is needed for the 5 ⁄17 of a turn.2. Install the 17 hole circle dividing plate ontothe rotary table as described earlier. Set thecrank handle and the indexing pin to indexthe 17 hole circle.3. Check to see that the worm gear is engagedand locked into position.4. Turn the handwheel to take up any play inthe worm gear and zero the table. Set thecrank arm pin into one of the 17 hole circleholes.Figure 16. Crank on shaft and pin engaged.Note—It is important to always turn thehandle the same direction to avoid backlashand maintain accuracy.H7527 6" Rotary Table -15-

5. Set the sector arms so there are 5 holes plusthe hole the indexing pin is located in.Note—What is actually being counted is thespacing between the holes. Five spacesneed to be on the 17 th hole circle between thesector arms (see Figure 17) .Sector Arm1234Crank Pin5Figure 18. Setting the pin in the last hole.12. Rotate the sector arm so the arm rests on thepin once again (see Figure 19).Figure 17. Hole spacing.6. Tighten the set screw on the sector arms tofix the spacing of the sector arms.7. Move the sector arm so it rests against thecrank arm pin as shown in Figure 17.8. Make your first hole.9. Pull back on the crank handle spring loadedpin to remove the pin from the dividing platehole. Pull the pin out far enough to clear thetops of the sector arms while you crank soyou won"t bump the sector arms and loseyour position.Figure 19. Rotating the sector arm to restagainst new position.13. From this new starting point, repeat Steps8-12 for the remaining holes.10. Turn the crank 5 full turns.11. After completing the 5th full turn, continuecranking past the 5 holes on the 17 holecircle to rotate exactly 5 ⁄17 of a turn. Set the pinin the 5th (last) hole of the sector (see Figure18).-16- H7527 6" Rotary Table

Number ofDivisionsIndex CircleNumber ofTurns on CrankNumber ofDivisionsIndex CircleNumber ofTurns on CrankNumber ofDivisionsIndex CircleNumber ofTurns on Crank1 ANY 90 34 17 2 11/17 67 N/A2 ANY 45 35 21 2 12/21 68 N/A3 ANY 30 36 20 2 10/20 69 23 1 7/234 20 22 10/20 37 37 2 16/37 70 21 1 6/215 ANY 18 38 19 2 7/19 71 N/A6 ANY 15 39 39 2 12/39 72 20 1 5/207 21 12 18/21 40 20 2 5/20 73 N/A8 20 11 5/20 41 41 2 8/41 74 37 1 8/379 ANY 10 42 21 2 3/21 75 20 1 4/2010 ANY 9 43 43 2 4/43 76 N/A11 33 8 6/33 44 N/A 77 N/A12 20 7 10/20 45 ANY 2 78 39 1 6/3913 39 6 36/39 46 23 1 22/23 79 N/A14 21 6 9/21 47 47 1 43/47 80 16 1 2/1615 ANY 6 48 16 1 14/16 81 18 1 2/1816 16 5 10/16 49 49 1 41/49 82 41 1 4/4117 17 5 5/17 50 20 1 16/20 83 N/A18 ANY 5 51 N/A 84 N/A19 19 4 14/19 52 N/A 85 N/A20 20 4 10/20 53 N/A 86 43 1 2/4321 21 4 6/21 54 18 1 12/18 87 29 1 1/2922 33 4 3/33 55 33 1 21/33 88 N/A23 23 3 21/23 56 N/A 89 N/A24 20 3 15/20 57 19 1 11/19 90 ANY25 20 3 12/20 58 29 1 16/29 91 N/A26 39 3 18/39 59 N/A 92 N/A27 18 3 6/18 60 20 1 10/20 93 31 30/3128 N/A 61 N/A 94 47 45/4729 29 3 3/29 62 31 1 14/31 95 19 18/1930 ANY 3 63 21 1 9/21 96 16 15/1631 31 2 28/31 64 N/A 97 N/A32 16 2 13/16 65 39 1 15/39 98 49 45/4933 33 2 24/33 66 33 1 12/33 99 33 30/33100 20 18/20Figure 20. Index table.H7527 6" Rotary Table -17-

TailstockThe Model H7527 comes with a tailstock for therotary table. The tailstock is used when the rotarytable is in the vertical position. This tailstockallows the operator to support larger workpiecesthat normally cannot be supported while maintaininga high level of accuracy.To install the tailstock to your milling table:1. Secure the rotary table in the vertical positionon the milling table.Figure 21. Indicating surface.2. Install the tailstock onto the milling table sothe dead center of the tailstock is roughly inline with the center of the rotary table.3. Install a MT#2 dead center into the centerhole of the rotary table.4. Install a center drilled workpiece betweenthe two centers. Note —In this example theworkpiece should be checked for concentricity.Any error can be factored in during alignment.Figure 22. Determining offset.5. Mount a dial indicator in the mill spindle andindicate off of a horizontal center line of theworkpiece (see Figure 21).6. Run the table back and forth along the Xaxis, adjust the position of the tailstock halfthe distance of the offset and recheck. (seeFigure 22 & 23).7. Continue to make this adjustment until zeromovement is indicated all along the travel.Figure 23. Adjusting for offset.8. Tighten the bolts and recheck.To align the Z axis:1. Repeat Steps 5 -7 from above except indicateoff the vertical center line of the workpiece.2. Make your adjustments by slightly looseningthe adjustment bolts and raising or loweringthe tailstock dead center in the appropriatedirection (see Figure 24).3. Tighten the bolts and recheck.Adjustment BoltsFigure 24. Vertical tailstock adjustment.-18- H7527 6" Rotary Table

SECTION 4: MAINTENANCEAlways disconnect powerto the machine beforeperforming maintenance.Failure to do this mayresult in serious personalinjury.Rotary TableMaintenanceUnpainted Cast IronProtect the unpainted cast iron surfaces on thetable by wiping the table clean after every use—this ensures moisture does not remain on baremetal surfaces.Keep table rust-free with regular applications ofproducts like G96 ® Gun Treatment, SLIPIT ® , orBoeshield ® T-9.Clean your rotary table after every use. A fewdrops of oil in the ball fittings will keep the wormgear sufficiently lubricated (see Figure 25). Toprevent oxidation to the rotary table or mill table,do not leave it mounted for extended periods oftime.Figure 25. Lubrication points.H7527 6" Rotary Table -19-

H7527 Parts ListREF PART # DESCRIPTION REF PART # DESCRIPTION1 PH7527001 MAIN BODY 22 PH7527022 SECTOR ARM SPRING2 PH7527002 TABLE 23 PH7527023 SECTOR ARM3 PH7527003 WORM WHEEL 24 PS09M PHLP HD SCR M5-.8 X 104 PH7527004 SHAFT 25 PSS79M SET SCREW M4-.7 X 65 PH7527005 WORM LOCK THUMB SCREW 26 PW05M FLAT WASHER 4MM6 PH7527006 VERNIER RING 27 PH7527027 TAILSTOCK BASE7 PH7527007 GRADUATED COLLAR 28 PH7527028 STUD M10-1.5 X 858 PH7527008 HANDWHEEL 29 PW04M FLAT WASHER 10MM9 PH7527009 CLAMP 30 PN02M HEX NUT M10-1.510 PH7527010 THREADED COLLAR 31 PH7527031 KNURLED KNOB11 PH7527011 SPECIAL BEARING 32 PSS26M SET SCREW M5-.8 X 612 PH7527012 COLLAR 33 PB26M HEX BOLT M8-1.25 X 3013 PH7527013 WORM 34 PSS53M SET SCREW M5-.8 X 1214 PH7527014 COLLAR 35 PH7527035 KEY 3 X 4 X 515 PH7527015 LOCK RING 36 PN06M HEX NUT M5-.816 PH7527016 SPECIAL WASHER 37 PH7527037 DEAD CENTER17 PH7527017 HEX BOLT M6-1 X 15 38 PH7527038 TAILSTOCK BODY18 PH7527018 DIVIDING PLATE 15-20 39 PK108M KEY 3 X 3 X 519 PH7527019 DIVIDING PLATE 21-33 40 PH7527040 T-BOLT & NUT M8-1.2520 PH7527020 DIVIDING PLATE 37-49 41 PH7527041 STEP BLOCK21 PH7527021 CRANK HANDLE 42 PH7527042 SERRATED END CLAMPH7527 6" Rotary Table -21-

WARRANTY AND RETURNSGrizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser fromthe date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warrantyand any and all warranties that may be implied by law, including any merchantability or fitness, for any particularpurpose, are hereby limited to the duration of this written warranty. We do not warrant or representthat the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product andany legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,or consequential damages arising from the use of our products.To take advantage of this warranty, contact us by mail or phone and give us all the details. We will thenissue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of thecarton. We will not accept any item back without this number. Proof of purchase must accompany themerchandise.The manufacturers reserve the right to change specifications at any time because they constantly strive toachieve better quality equipment. We make every effort to ensure that our products meet high quality anddurability standards and we hope you never need to use this warranty.Please feel free to write or call us if you have any questions about the machine or the manual.Thank you again for your business and continued support. We hope to serve you again soon.-22- H7527 6" Rotary Table

WARRANTY CARDName______________________________________________________________________________Street______________________________________________________________________________City_ _______________________ State_________________________ Zip_ _____________________Phone #_____________________ Email_ ________________________ Invoice #_________________Model #_____________________ Order #________________________ Serial #__________________The following information is given on a voluntary basis. It will be used for marketing purposes to help us developbetter products and services. Of course, all information is strictly confidential.1. How did you learn about us?_____ Advertisement _ ____ Friend _____ Catalog_____ Card Deck _ ____ Website _____ Other:CUT ALONG DOTTED LINE2. Which of the following magazines do you subscribe to?____ Cabinet Maker____ Family Handyman____ Hand Loader____ Handy____ Home Shop Machinist____ Journal of Light Cont.____ Live Steam____ Model Airplane News____ Modeltec____ Old House Journal____ Popular Mechanics____ Popular Science____ Popular Woodworking____ Practical Homeowner____ Precision Shooter____ Projects in Metal____ RC Modeler____ Rifle____ Shop Notes____ Shotgun News3. What is your annual household income?_____ $20,000-$29,000 _ ____ $30,000-$39,000 _____ $40,000-$49,000_____ $50,000-$59,000 _ ____ $60,000-$69,000 _____ $70,000+4. What is your age group?_____ 20-29 _ ____ 30-39 _____ 40-49_____ 50-59 _ ____ 60-69 _____ 70+____ Today’s Homeowner____ Wood____ Wooden Boat____ Woodshop News____ Woodsmith____ Woodwork____ Woodworker West____ Woodworker’s Journal____ Other:5. How long have you been a woodworker/metalworker?_____ 0-2 Years _____ 2-8 Years _____ 8-20 Years _ ____20+ Years6. How many of your machines or tools are Grizzly?_____ 0-2 _____ 3-5 _____ 6-9 _ ____10+7. Do you think your machine represents a good value? ______Yes _____No8. Would you recommend Grizzly Industrial to a friend? ______Yes _____No9. Would you allow us to use your name as a reference for Grizzly customers in your area?Note: We never use names more than 3 times. ______Yes _____No10. Comments:_______________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ _________________________________________________________________________________

FOLD ALONG DOTTED LINEPlaceStampHereGrizzly INDUSTRIAL, inc.P.O. box 2069Bellingham, WA 98227-2069FOLD ALONG DOTTED LINESend a Grizzly Catalog to a friend:Name_______________________________Street_______________________________City______________State______Zip______Tape along edges--please do not staple

Buy Direct and Save with Grizzly ® – Trusted, Proven and a Great Value!Visit Our Website Today And Discover WhyGrizzly ® Is The Industry Leader!• SECURE ORDERING• ORDERS SHIPPED WITHIN 24 HOURS• E-MAIL RESPONSE WITHIN ONE HOUR-OR-Call Today For A FREEFull Color Catalog

Longer answer: rotary table and dividing head mfr"s have pretty much standardised on 40, 60, 80 and 90-tooth wheels, as they give a better set of divisions/indexings: they all have 5 and 10 as factors when taking whole turns of the handle, fairly common requirements; a 72-tooth wheel only has factors of 2x2x2x3x3, so a limited range of indexings, none with 5 as a factor...

The table"s mfr may have offered a dividing attachment to replace the handwheel and dial (a set of plates with interesting numbers, sector arms, crank handle with lock pin etc.) to index other divisions that a) don"t divide into 80 easily or b) don"t divide into 80x number-of-lines-on-the-dial (80x54, so *lots* of factors of 4320, pick any from 2x2x2x2x5 x 2x3x3x3) - examples would be multiples of 7, 11, 13, 17 divisions etc. - which is why the division plates have such interesting numbers of holes! ("why has this plate got *51* holes???")

A rotary table is a precision work positioning device used in metalworking. It enables the operator to drill or cut work at exact intervals around a fixed (usually horizontal or vertical) axis. Some rotary tables allow the use of index plates for indexing operations, and some can also be fitted with dividing plates that enable regular work positioning at divisions for which indexing plates are not available. A rotary fixture used in this fashion is more appropriately called a dividing head (indexing head).

The table shown is a manually operated type. Powered tables under the control of CNC machines are now available, and provide a fourth axis to CNC milling machines. Rotary tables are made with a solid base, which has provision for clamping onto another table or fixture. The actual table is a precision-machined disc to which the work piece is clamped (T slots are generally provided for this purpose). This disc can rotate freely, for indexing, or under the control of a worm (handwheel), with the worm wheel portion being made part of the actual table. High precision tables are driven by backlash compensating duplex worms.

The ratio between worm and table is generally 40:1, 72:1 or 90:1 but may be any ratio that can be easily divided exactly into 360°. This is for ease of use when indexing plates are available. A graduated dial and, often, a vernier scale enable the operator to position the table, and thus the work affixed to it with great accuracy.

Rotary tables are most commonly mounted "flat", with the table rotating around a vertical axis, in the same plane as the cutter of a vertical milling machine. An alternate setup is to mount the rotary table on its end (or mount it "flat" on a 90° angle plate), so that it rotates about a horizontal axis. In this configuration a tailstock can also be used, thus holding the workpiece "between centers."

With the table mounted on a secondary table, the workpiece is accurately centered on the rotary table"s axis, which in turn is centered on the cutting tool"s axis. All three axes are thus coaxial. From this point, the secondary table can be offset in either the X or Y direction to set the cutter the desired distance from the workpiece"s center. This allows concentric machining operations on the workpiece. Placing the workpiece eccentrically a set distance from the center permits more complex curves to be cut. As with other setups on a vertical mill, the milling operation can be either drilling a series of concentric, and possibly equidistant holes, or face or end milling either circular or semicircular shapes and contours.

with the addition of a compound table on top of the rotary table, the user can move the center of rotation to anywhere on the part being cut. This enables an arc to be cut at any place on the part.

Additionally, if converted to stepper motor operation, with a CNC milling machine and a tailstock, a rotary table allows many parts to be made on a mill that otherwise would require a lathe.

Rotary tables have many applications, including being used in the manufacture and inspection process of important elements in aerospace, automation and scientific industries. The use of rotary tables stretches as far as the film and animation industry, being used to obtain accuracy and precision in filming and photography.