Product Spotlight: Ball-Screw Drives
A decoupling arrangement that uses mechanical cross-roller bearings instead of air bearings for ball-screw drives lets the company’s PMT 160 Series stages give straightness and flatness runout of 50 nm or less.
The system isolates
transverse movement of the ball
screw from the linear-bearing system
and saddle of the stage.
The application of flexure designs
eliminates disturbance forces that
elastically deform the base plate,
bearing, and saddle and interfere in
the straightness and flatness of the
whole stage system.
The PMT 160 offers travels from 50
to 300 mm, with standard positioning
accuracy of less than 10 μm and
repeatability of ± 0.5 μm when driven
by either dc servomotor (with rotary
encoder) or dc stepper motor.
Steinmeyer Inc.
217 Middlesex Turnpike
Burlington, MA 01803
(781) 273-
6220
steinmeyer.com