air bearing rotary table in stock

With proper selection and integration of high-performance brushless DC servo motors ABTech’s air bearing rotary tables provide ultra-smooth and precise rotary motion. With high torque, high performance motor drives, our motion experts will gather your specific requirements and work closely with our motor suppliers to create/select a motor drive that suits your specific application. Whether you need sub-micron position accuracy with minimal settle time and stringent following error specifications, high-speed constant motion, or a combination of both there is an ABTech rotary table that will meet your needs.

ABTech’s modular design approach facilitates multiple system configurations to optimize the price-for-performance required in your application. This approach allows the user to define the level of control desired for the most cost-effective solution. Our complete engineering services allow us to respond quickly to provide a solution to your O.E.M. requirements for ultra-precision rotary motion.

Rotation tables with air bearings are used when rotary motion with the highest accuracy, smoothness, and geometric performance is required. Due to the lack of friction, these high precision rotation bearings and direct-drive motorized rotary tables can achieve angular resolution in the sub-microradian range. PI’s air bearing design and manufacturing group provides hundreds of man years of design experience along with the manufacturing and test equipment to produce high quality rotary tables with the tightest tolerances.

Rotary air bearings (air bearing spindles) are friction free, and all of PI’s motorized air bearing rotation stages employ closed-loop, non-contact 3-phase direct-drive torque motors, and optical high-resolution rotary encoders for ultra-reliable maintenance-free operation with basically unlimited service life.

Absolute angle-measuring feedback sensors are available to provide closed-loop control with single digit microradian bi-directional repeatability. Direct-drive rotary air bearing tables also provide better eccentricity, flatness, and minimized wobble compared to rotary stages based on mechanical bearings. The friction-free design allows for high angular velocity without vibrations and noise.

Applications of rotary air bearing spindles / motorized direct-drive rotary tables include indexing, metrology, optical lens testing, bio-medical engineering, runout measurements of machined parts, and fiber optics.

PI’s high-performance closed loop servo motor controllers are available to precisely control position, acceleration and velocity, with advanced algorithms. Fully integrated multi-axis motion systems with linear air bearing stages and combinations with gantry systems are also available from PI’s air bearing division.

Air bearing stages are used where vibration-free motion is required, velocity needs to be highly constant, and optimum angular repeatability is requested.

Air bearings avoid friction, wear, and backlash effects. PIglide linear, rotary and spherical bearings are precision components that can be integrated and motorized for applications in OEM, industrial, and research markets.

Air Bearing Rotary Tables, Table Top and Work Load are Supported on Air Bearings whose Freedom from Friction Contributes to Extremely High Positional Accuracy

An Interlocking Switch is used when Motors are Incorporated to Prevent the Table Top from Moving when the Air Supply is Turned Off.  When the Air Supply is Turned Off, the Table Top Sits Firmly on our Cast Base with an Extremely High Accuracy of Parallelism Between the Base and Table Top

Rotary tables specifically developed for use in Metrology applications.  CMM tables, inspection tables, assembly tables.  Range of sizes 100mm thru 5,000mm.  Larger on request.

Air bearing rotary tables, when rotating, the table top and work load are supported on air bearings whose freedom from friction contributes to the extremely high positional accuracy.  High precision needle roller bearing maintains radial accuracy.

Supplied with each table.  On/off Switch controls the compressed air supply to the table.  Interlocking ensures that the motor drive can only operate if the air supply is on.  When air supply is off, table sits firmly on the base casting with extremely high accuracy of parallelism between the top surface and the underside of the base.

PI’s A-630 series of low-profile rotary spindle series was recently extended by the new A-634 rotary spindle stage with 150mm table diameter and the A-638 model with 350mm diameter. Thesehigh precision, high speed direct drive rotary spindlesare only 60mm tall and provide high speed to 3000 degrees/second. For transmitted light applications, the A-688 model with a large aperture is available.

As all of PI’s direct driveair bearing rotary tables, the A-688 high precision spindleis also equipped with absolute measuring feedback encoders for closed loop position control. They provide resolution to 0.0015µrad (0.00003 arcsec), and flatness and eccentricity as low as 175nm and 300nm, respectively.

The rotary spindle tables use low-cogging frameless and slotless torque motors to enable this excellent geometric performance. Different designs allow use in horizontal, vertical or any orientation. Air bearings guarantee a virtually unlimited service life with no wear, and zero required maintenance. As with all other PI linear air bearings and stages, the rotary tables are clean room compatible and requires no lubrication. For transmissive light applications, the A-688 direct drive rotary table with large aperture is available.

The highest motion performance is achieved with PI’s A-800 series of EtherCat-based, high precision motion controllers, ideally suited for closed-loop control of the rotation tables. Advanced algorithms are available to deal with changing load conditions and to suppress external disturbances.

Air-bearings have no mechanical elements such as rollers or slides, and deliver frictionless, non-contact motion, resulting in negligible reversal error, better flatness, and minimal wobble and eccentricity. All these are ideal prerequisites for applications such as inspection and metrology, calibration, and scanning of high-end parts (i.e., infrared and precision optics, turbine blades, shafts and bearings) in industries like aerospace, aircraft, automotive, semiconductors, and photonics.

PI (Physik Instrumente), a leader in precision motion control and nanopositioning solutions, announces a new large motorized rotary air bearing added to its existing families of PIglide air bearing rotary stages.

Air-bearings have no rolling or sliding elements and deliver frictionless, non-contact motion, resulting in negligible reversal error, better flatness, and minimal wobble and eccentricity. All these are ideal prerequisites for applications such as inspection and metrology, calibration, and scanning of high-end parts (i.e., infrared and precision optics, turbine blades, shafts and bearings) in industries like aerospace, aircraft, automotive, semiconductors, and photonics.

Air bearings replace mechanical contact by a thin film of air which is completely frictionless, resulting in no breakaway stiction or drag friction during operation. Featuring high performance, low-cogging frameless slotless torque motors and optical encoders, these stages can be used in any orientation. The A-688 is customizable with options to create a solution for point-to-point indexing or constant velocity scanning. Coupled with no required maintenance or lubrication, these rotary positioners have a virtually unlimited life.

PI designs and manufactures all air bearing products in the USA. PI’s engineering team has hundreds of man years of air bearing design and manufacturing experience. In addition to customized systems for OEMs, PI offers a substantial standard product line of air bearing stages that includes motorized and non-motorized, linear, rotary, spherical, X/XY, voice coil, compact, and large scale systems, as a complement to its existing comprehensive range of piezo nano positioning stages, traditional motorized positioners, and hexapod 6-axis parallel positioning systems. The extreme depth and breadth of motion technologies puts PI in the unique position to cover the whole motion range from finger-tip sized nano-positioners to large scale stages with long travel ranges, through a plethora of different drives and guiding systems that can be tailored to meet the needs of an OEM or customer.

Super-precision axial-radial cylindrical roller bearings are commonly used to support rotary tables, indexing heads and multi-spindle heads on machining centres. SKF manufactures super-precision axial-radial cylindrical roller bearings for shaft diameters from 80 to 850 mm. Their internal design, together with close tolerance manufacturing processes, enables these bearings to attain radial run-out better than, and axial run-out close to, P4 tolerance class.