- April 22, 2010
April 22, 2010 - Model RTH-4 rotary tables provide angular positioning and are designed to eliminate backlash, friction and wear problems associated with worm, gear and belt drives. They combine axial brushless RotoLinear motoring modules and planar air bearings in a compact, direct drive configuration. Large area air bearings provide sufficient payload stiffness and maximizes performance in respect to wobble and run-out. Radially distributed RotoLinear motoring modules provide high positioning stiffness during rotary indexing and when installed on moving XY tables. These tables provide unlimited rotation capability and are compatible with standard micro-stepping drives and indexers. Can also be equipped with IntelLiCoder feedback and driven as a commutated brushless motor. RTH tables feature center bore (aperture) for user to install cabling, vacuum lines or fixtures. Features: Center aperture High torque motors Axial and radial air bearings Unlimited rotation Specifications: (model and system dependent) torque 2-30 lb-ft resolution 2 arc-sec repeatability 2 arc-sec accuracy 10-20 arc-sec run-out 10 microns table height 1.25" table OD 4"