Mechanical bearings suitable for precision component testing and laser feeds
Aerotech
APR mechanical bearing series
Aerotech’s APR mechanical bearing series is suitable for precise rotary positioning in applications such as precision component testing, optical calibration systems, laser micromachining, sub-micron metrology, slip ring assemblies, laser feeds and air supplies.
The units feature an accuracy of up to 1.5 arc-sec and an axial load capacity up to 450kg.
Within the range there are seven models in three frame sizes with nominal square footprint mounting dimensions of 150, 200 and 260mm, and a clear through-aperture of 50, 75, or 100mm respectively.
The series also features a cog-free, direct-drive, brushless servo motor that has rapid acceleration and a maximum speed of up to 800rpm at the smaller stage.
Key product features
- Manufactured from anodised aluminium with a hardcoat finish
- Can be used where centre of rotation is either parallel or perpendicular to gravity
- Total tilt error motion of two arc-sec
- Total axial and radial error motion of 1.5 microns
- Resolution to 0.04 arc-sec
- Bi-directional repeatability to 0.75 arc-sec in certain models
- Standard and calibrated accuracy options
- Incremental or absolute encoders
- Direct-drive motor ratings are available to suit differing load, torque and speed requirements
- APR units can be supplied for continuous rotation or fitted with limit switches for part rotation from 10–270°
- Brakes and adjustable mechanical hard stops optional
- Optional tabletop features a series of threaded holes for customer workpiece interfacing
- Single- or multi-axis motion control options include PC based software-only or hardware-based rack- or desk-mount packages
- Programming options include RS-274 G-code, Aerobasic, IEC61131-3, Microsoft .net framework and Labview
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