Call 866-999-8225

RM-3 Low Temperature Rotary Stage

Product Videos

RM-3 Low Temperature Rotary Stage

This version of the RM-3 is designed to operate from -50°C to 70°C. To achieve this temperature range, we use a specially designed stepper motor, Molykote 33 grease on all bearings and worm gear, and the housing is also modified to allow proper bearing fit at -50°C. The RM-3 design takes advantage of a single preloaded crossed roller bearing for the table movement. This design approach eliminates the use of a dual bearing configuration thus improving on axial runout and wobble. This rotary table utilizes a worm gear drive with available gear ratios of 90:1 and 45:1. The RM-3 is available with an optical home switch and 4000 CPR rotary encoder.

We use an Envirotronics thermal chamber to verify operation of each stage at the temperature extremes.

Thermal Chamber

Envirotronics Thermal Chamber


RM-3 Part Number Configuration
Select a gear ratio and motor type.

Typical lead-time: 6-7 Weeks
Part Number: N/A


0.29 arc-sec (90:1 gear ratio, 250 microsteps)
±72 arc-sec
Max. Speed
Stepper Motor: 25°/sec (90:1 gear ratio), 45°/sec (45:1 gear ratio)
Unidirectional Repeatability
10 arc-sec
125 arc-sec
Max Load Capacity
20.4 kg (45 lbs)
Travel Range
360° Continuous
Optical rotary encoder mounted to rear of motor, 4000 CPR with Index
Limit Switches
Optical Home Switch
Index mark on encoder 
Gear Ratio
90:1 or 45:1
Stage Weight
1.4 kg (3 lbs)
Aluminum Alloy Construction
Black Anodize
Operating Temperature
-50°C to 70°C

* Specifications are at room temperature (23°C)


RM-3 Motorized Rotary Stage
RM-3 Motorized Rotary StageClick to Enlarge

Motor Options


Size 17 Stepper Motor

  • NEMA 17 high torque brushless motor
  • 0.95 Amp/Phase
  • 5.0 Ohm/Phase
  • 3.1 mH/Phase
  • 1.8 degrees/step
  • -50°C to 80°C
  • Compatible with the following motion controllers:
    NSC-A1 Series | NSC-A2L Series | NSC-G Series

CAD Files