RM-5 Low Temperature Rotary Stage



RM-5 Low Temperature Rotary Positioner

This version of the RM-5 is designed to operate from -50°C to 70°C. To achieve this low 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-5 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 72:1 and 36:1. The RM-5 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.
RM-5 Low Temperature Motorized Rotary Stage
Typical lead-time: 6-7 Weeks
$4,640.00
Resolution |
0.36 arc-sec (72:1 gear ratio, 250 microsteps) |
Accuracy |
±72 arc-sec |
Max. Speed |
Stepper Motor: 25°/sec (72:1 gear ratio), 50°/sec (36:1 gear ratio) |
Backlash |
125 arc-sec |
Max. Output Torque |
10.1 Nm (90 lb-in) |
Max. Moment Load |
54.2 Nm (480 lb-in) |
Max Load Capacity |
90.7 kg (200 lbs) |
Travel Range |
360° Continuous |
Encoder |
Optical rotary encoder mounted to rear of motor, 4000 CPR with Index |
Limit Switches |
None |
Origin |
Optical home switch
Optical index mark on encoder (with encoder option) |
Gear Ratio |
72:1 or 36:1 |
Stage Weight |
3.6 kg (8 lbs) |
Material |
Aluminum Alloy Construction |
Finish |
Black Anodize |
Operating Temperature |
-50°C to 70°C |

Size 23 Stepper Motor
- NEMA 23 high torque stepper motor
- 2.8 Amp/Phase
- 0.9 Ohm/Phase
- 2.5 mH/Phase
- 1.8 degrees/step
- Compatible with the following motion controllers: NSC-A1 Series | NSC-G Series
CAD Files – STEP File Format
RM-5-100-LT, Stepper Motor
RM-5-111-LT, Stepper Motor with Encoder