Direct drive continuous rotary motion
Space saving, compact design; at only 60mm tall, the PDR160 is among the most compact direct drive stage on the market.
160 mm diameter model
Low maintenance & longer life; integrated brushless servo direct drive motor eliminates gear wear, backlash and torque variation associated with worm drive and belt driven stages.
High pole count aids in obtaining low velocity ripple.
Resolutions to 0.25 arc-seconds
Clean design; all multiplication electronics are internal and there is only one cable necessary for external connections.
Class 10 cleanroom option

PDR160

Primatics PDR160 rotary tables are among the most advanced direct drive tables available. They feature a high performance direct drive motor that creates sub arc-second repeatability and fast settling times, making the PDR series ideal for semiconductor wafer inspection, high speed laser machining & precision metrology. The compact design also has a smaller footprint than comparable worm drives.

Precision Grade Performance Specs	PDR160
Travel (degrees)	360
Resolution (arc-sec)	0.25	2.0	16
Accuracy (arc-sec)	+/- 30		+/- 50
Error Mapped Accuracy w/ E3 Rotary Encoder (arc-sec)	+/- 5
Max Speed (rpm)	75	350
Bi-directional Repeatability (counts)	+/- 4	+/-2
Wobble (arc-sec)	5
Axial Runout (microns)	2
Radial Runout (microns)	4
Continuous Torque (N-m)	0.9
Peak Torque (N-m)	7.2
Axial Load Capacity (kg)	20
Radial Load Capacity (kg)	10
Weight (kg)	3.8

Superior Performance

The PDR's high efficiency neodymium servo motor permits greater acceleration, shorter settling times and less motor heating than other types of direct drive stages. In addition, the PDR motors have a high pole count, which aids in obtaining low velocity ripple even at very low speeds. The PDR's high performance motor, coupled with its platen mounted high resolution glass scale, results in high servo stiffness over a wide dynamic range.

Improved Reliability

An oversized cross roller bearing and drivetrain guarantees long, trouble-free operation. In addition, the PDR has a hemisphere switch for quick homing.