mud pump gear ratio calculator for sale

Pump Output per Stroke (PO): The calculator returns the pump output per stroke in barrels (bbl).  However this can be automatically converted to other volume units (e.g. gallons or liters) via the pull-down menu.

A triplex mud (or slush) pump has three horizontal plungers (cylinders) driven off of one crankshaft. Triplex mud pumps are often used for oil drilling.

We provide hydraulic components & repair services for industrial applications like paper mills, saw mills, steel mills, recycling plants, oil & gas applications and mobile applications, including construction, utility, mining, agricultural and marine equipment. This includes hydraulic pumps, motors, valves, servo/prop valves, PTOs, cylinders & parts.

We commonly receive the call to help assist in properly sizing pulleys and sheaves for pump applications.  Generally, this is in high pressure wash applications but we also run into a fair amount of agricultural applications where this knowledge can be leveraged.  Pulleys or “sheaves” are commonly used for connecting pumps to motors or engines via drive belts.  Most pulleys are cast iron or aluminum construction and are offered in either fixed-bore or tapered bushing styles.

For proper operation of any brand or pump type, it is critical to size pulleys and sheaves, correctly, in order to maintain correct RPM, (revolutions per minute). RPM speed is what determines the pump output flow rate – in gallons per minute, liters per minute, etc.

Incorrect pump RPM will adversely affect the pump performance.  If the pump is turning too slow – it will not give full performance.  Conversely, if the pump is turning too fast, it could cause premature mechanical failures (i.e. valve wear or elastomer failure).

Therefore, it is absolutely critical to ensure correct pulley sizing and analysis of the drive unit, (motor, engine, etc.) relative to the pump. For the sake of this discussion, we will assume standard electric motors at 1750 RPM and standard gas engines at 3400RPM.  Do note, one must determine the rpm of their drive unit to be able to accurately calculate the pulley/sheave size.

If you start with an incorrect figure for RPM – you will size your equipment incorrectly.  This could lead to shorter equipment lifespans and/or reduced output flow rates.  Thus, ultimately a less efficient system which equates to more down time and added cost of operation.  The scope of this post will be focused towards plunger pump applications.  We assemble many units using this method in Omaha, NE.  Dultmeier Sales is proud to display the Built in the USA logo on our products.  Here are just a handful of the pulley-driven pump products that we offer.

There are complicated formulas for determining pulley ratios but in generic, layman terms, simply divide the driven component (pump) by RPM, the driver component (motor or engine) rated by RPM to get the required ratio.  In the example below, the pump RPM is 1070, for full output, while the motor is 1750 RPM.

This means the pulley ratio must be .611 to drive the pump correctly.  Hypothetically speaking, if we had a 4 inch pulley on the motor, we would require a 6.55” pulley on the pump.  That mathematical equation is as follows: 4” divided by .611 = 6.55”

If the drive pulley on the engine is 4 inches in diameter, we need to calculate 4/.315 = 12.70.  This means that the pump pulley must be 12.70 inches, in diameter, to run the pump at 1070 rpm.  You can view a technical page from our catalog here – it will help to further explain the calculation process.

Most pulleys, or sheaves, are designed with either fixed shaft bores or tapered bushing hubs.  Replaceable hubs fit the required motor or pump shaft size in either inch or mm sizes – depending on the application requirement.  These hubs come with bolts to attach them to the pulley, or sheave.

Tapered style hubs simply fit into the pulley opening and then are tightened with two or three set screws, which draw the bushing and pulley together to make one assembly.  The pulleys are then attached to the driver (electric motor or gas engine) and driven components (pump).  The type of hub, H, SD, SH, etc. must match to a pulley with the same designation for proper fit.

A belts are not as wide as B belts and, therefore, sit lower in the pulley groove.  While this may seem as a minor detail – it absolutely affects the ratio measurement when properly sizing a pulley.

As the information above shows, there are many things involved in order to determine the correct pulleys required to drive your pumps correctly.  It is important to remember the larger the difference in pulley sizes, the larger the center distance required to maintain minimum contact with the smaller pulley.  We would be glad to help with any sizing for your specific applications.  Your Experts in Delivering Fluid Handling Solutions – We Know Flow!

The gear ratio is the ratio of the circumference of the input gear to the circumference of the output gear in a gear train. The gear ratio helps us determine the number of teeth each gear needs to produce a desired output speed/angular velocity, or torque (see torque calculator).

We calculate the gear ratio between two gears by dividing the circumference of the input gear by the circumference of the output gear. We can determine the circumference of a specific gear in the same way we calculate the circumference of a circle. In equation form, it looks like this:

Similarly, we can calculate the gear ratio by considering the number of teeth on the input and output gears. Doing so is similar to considering the circumferences of the gears. We can express the gear"s circumference by multiplying the sum of a tooth"s thickness and the spacing between teeth by the number of teeth the gear has:

But, since the thickness and spacing of the gear train"s teeth must be the same for the gears to engage smoothly, we can cancel out the gear thickness and teeth spacing multiplier in the above equation, leaving us with the equation below:

A decimal number – expressing the gear ratio as a decimal number gives us a quick idea about how much the input gear has to be turned for the output gear to complete one full revolution.

An ordered pair of numbers separated by a colon, such as 2:5 or 1:14. With this, we can see the fewest number of turns required for both the input and output gears to return to their original positions at the same time.

From a different perspective, if we take the reciprocal of the gear ratio in its fractional form and simplify it to a decimal number, we get the value for the mechanical advantage (or disadvantage) our gear train or gear system has.

In our important role as hydraulic pump manufacturers, we are aware of the large number of variables that need to be considered when choosing the right pump for the specific application. The purpose of this first article is to begin to shed light on the large number of technical indicators within the hydraulic pump universe, starting with the parameter “pump head”.

The head of a pump is a physical quantity that expresses the pump’s ability to lift a given volume of fluid, usually expressed in meters of water column, to a higher level from the point where the pump is positioned. In a nutshell, we can also define head as the maximum lifting height that the pump is able to transmit to the pumped fluid. The clearest example is that of a vertical pipe rising directly from the delivery outlet. Fluid will be pumped down the pipe 5 meters from the discharge outlet by a pump with a head of 5 meters. The head of a pump is inversely correlated with the flow rate. The higher the flow rate of the pump, the lower the head.

What is the head of a pump? As mentioned earlier, the head corresponds to the actual energy that the pump delivers to the fluid. The Bernoulli equation is applied between the pump’s inlet and outlet sections:

However, during the design stage, P1 and P2 are never known (as there is no physical element yet and therefore it is not possible to effectively measure the pump’s inlet and outlet pressure).

At this point we can easily calculate the head losses of the system, and therefore choose the correct size of the pump to achieve the desired flow rate at the resulting equivalent head.

The pump head indicator is present and can be found in the data sheets of all our main products. To obtain more information on the technical data of our pumps, please contact the technical and sales team.

Determining the flow rate you will need is an essential part of planning your system design, before you go ahead and order or install your new pump. If you get this wrong, then you might have to invest money in replacement equipment which could seriously impact your budget.

All of these considerations will be specific to your project. The volume of fluid you wish to transport over a given time will be your flow rate, while the type of material and the distance between input and output will affect the flow rate you can realistically achieve. Therefore, these three aspects of a healthy system are all interlinked.

Once your system is installed and you have chosen the correct pump for the job, you will need to assess the system"s performance. There are a number of factors you could measure, but right now we will stick with flow rate. To measure the flow rate of your system you can:

Use a Flow Meter: This is a simple device which can measure the amount of fluid passing through it. Attach this to your discharge pipe, as close as possible to your pump and it should give you a reliable reading of your flow rate.

If the flow rate is not what it should be, given the expected performance of your installed pump, then you can move on and begin to assess each piece of your system for flaws. You may be interested in this blog:

Or, It could be that your pump is simply in need of replacement. If so, Global Pumps has a range of excellent industrial pumps available for any circumstance.

• Draw-work: National 1320-UE Draw-works, 1-1/2” Wireline Sand reel complete with 12000 ft of 9/16in sand line Make up and Brake out cathead complete with 2 GE 752 DC Motors 1 Crown-O- Matic 1 driller console with One Elmago Brake 6032 cooling system with water tank equipped with 1 each of 3x4 Mission Centrifugal Pump driven by electric Motor.

• Mud Pumps: 3 each National 12P160 Input power : 1600 hp with 2 Traction DC Motors Make by EMD type D79,Blower motors 10HP c) Supercharger pump 1 d) Liner cooling pump 1 Halco 1 x 1.5C Model# N 12 P 160 With 5hp motor e) Lube oil gear pump 1 (belt driven) f) Pulsation Dampner 1 Hydril 16 Gal, 5000 psi g) Pressure relief Valve 1 Retsco Reset relief valve 1500 – 5000 psi.

• Accumulator Unit: 1 unit BOP control unit Mfg. Koomey complete w/ 8 station accumulator 24 bottle 11 gallon & one electric pump and two air pumps WP 2000psi & 50hp motor c/w 2 ea remote panels c/w 150ft Umbilicals

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One way to be absolutely sure is to use our calculator to find the exact number of chain links needed. There is, however, a trick you could use if you haven’t got a calculator at hand. Place the chain over the largest sprocket and the largest chain ring and bring the ends together without routing the chain through the derailleur. Count four more chain links to the length and detach the links you don’t need at that point. Link the two ends of the new chain and voilà: a chain of the correct length is ready. This method also works pretty well on exotic bike types (e.g. recumbent bikes), where the chain gets rerouted again.

There are various standard types that have developed over time. The important thing to know is whether a chain is meant for 9, 10 or 11 speed derailleurs. The number indicates how many gears the derailleur can switch and the chain will need to be wider or narrower according to that number.

The size of these elements is the most important factor for calculating a chain length. After all, it makes sense to think that a longer chain stay will also need a longer chain. In addition to that, you need to consider the number of teeth on the largest chain ring and largest sprocket, because the chain will be pulled the tightest in such a configuration.

Heavily worn chains not only slow down gear shifting, they will also wear down the chain rings and sprocket set a lot faster, which means they will have to be changed more frequently. If the newly mounted chain is too long, then it will hang – which will also negatively impact gear switching performance. If it is too short, it can damage the derailleur hanger and the rear derailleur due to too much tension.

It is advisable to clean and oil the chain regularly, because it is always out in the open and will have to deal with all kinds of weather, dirt, dust, mud and even road salt. A really dirty chain will benefit from some mildly soapy water or chain cleaner to get rid of the most stubborn dirt. Be careful with aggressive grease removers! It could eat away at the base lubricant of the chain.

We already talked about the fact that the sprockets and chain rings could get damaged by a worn chain. Not to mention sluggish gear switching. A so-called chain gauge will help you determine whether or not a chain needs replacing. A chain gauge usually has two side: one for steel/titanium and one for aluminium sprockets and/or chain rings. It is very easy to use: Place the gauge onto the chain; if it sinks in completely, then you should replace the chain as soon as possible.

Pump curves are calculated based on water which has an SG of 1. If a fluid has a higher specific gravity than water, then the head will show the same, but the pressure will increase since Pressure is a function relative to fluid calculated by multiplying Head x Specific Gravity.

The presence of solids will also effect the absorbed power. Wastewater which contains sewage is typically assumed to have an SG of 1 due to the large ratio of water to solids. However slurries or sludges can have a density 2 or 3 times higher, affecting the motor power accordingly.

The pressure supplied by a pump for each application is fluid dependent and relative to fluid density thus pressure will change according to the fluid’s specific gravity

Density and pressure directly affect the power absorbed by the motor during operation. The amount of power absorbed by a motor during operation is multiplied by the SG to calculate the power absorbed.

Care must be taken where a pump curve shows a high NPSH is required. A fluid with a low specific gravity, must be checked against the NPSH required carefully.

Cavitation can occur if the inlet pressure is below that required by the pump, which can arise when the SG of the fluid is not accounted for correctly, when determining the NPSH available.

Positive Displacement Pump CurveA PD Pump curve will not be affected in the same way as a centrifugal pump curve by the specific gravity of a fluid, as flow rate will remain constant. However, the absorbed power will increase, with the pressure produced remaining fluid dependent.