Direct Drive Rotary Table offers 10 arc-sec accuracy.

Press Release Summary:

ServoRing(TM) rotary SRT stages utilize direct-drive, 3-phase, brushless motor technology with low cog magnetic design that lends to smooth rotation and performance. Also included, cross-roller bearing technology maximizes performance with respect to wobble, moment stiffness, and friction. Motor and 0.5 arc-sec positioning resolution rotary encoders are directly coupled to eliminate coupling backlash. Series includes 4 frame sizes and 12 torque values from 10-300 Nm.

Original Press Release:

ServoRing(TM) Direct Drive Rotary Tables Series SRT

Compact package and superior design

The design of the ServoRing(TM) rotary SRT stages was optimized to maximize torque in the smallest volume. Direct drive three phase brush-less motor technology with "Lo-Cog" magnetic design was chosen to assure smooth rotation and dynamic performance. Cross-roller bearing technology is used to maximize performance with respect to wobble, moment stiffness and friction. ServoRing(TM) SRT stages have large clear center aperture that can be used for air or wire line feed-through or beam delivery

Accurate Positioning

Performance is assured with high resolution encoder that results in 0.5 arc-sec positioning. The motor and rotary encoders are directly coupled to eliminate coupling backlash. The low inertia and zero backlash make ServoRing(TM) SRT Series the ideal solution for applications requiring frequent directional changes.


ZERO maintenance
No adjustment
Zero backlash
High torque motors
Precision bearings
High resolution feedback
four frame sizes
twelve torque models

(model and system dependent)

torque 10 to 300 Nm
resolution 0.5 arc-sec
repeatability 1 arc-sec
accuracy 10 arc-sec
run-out 10 microns
table OD 110 to 250 mm
center aperture up to 100 mm

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