RM-5 Low Temperature Rotary Stage
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.
Envirotronics Thermal Chamber
Specifications
|
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
|
Motor Options
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
- -50°C to 80°C
- Compatible with the following motion controllers:
NSC-A1 Series | NSC-G Series