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RM-3 Motorized Rotary Stage

The RM-3 Series motorized rotary stage is machined from 6061 aluminum alloy to provide a light yet stiff and stable platform.

RM-3 Vacuum Compatible Rotary StageThe 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 worm gear is preload to minimize the backlash in the gear train.

The RM-3 is available as a vacuum compatible rotary stage. The vacuum compatible version uses a special stepper motor that has all paint and oils removed. The leads from the motor utilizes a Teflon insulation. All aluminum stage parts have a clear iridite finish.


RM-3 Rotary Stage

Typical lead-time: 4 Weeks
Part No. RM-3

RS-485/422 to USB Adapter with ribbon cable for MDrive Motor

RS-485/422 to USB adapter with ribbon cable for MDrive motor.
In Stock

Part No. 250138

Power Supply, 24V, 2.5A

Universal AC/DC Power Supply
Input: 100-240 VAC 50/60 Hz
Output: 24V, 2.5A
Plug: 2.1 x 5.5 mm
In Stock

Part No. 900055
Up to 0.29 arc-sec (depends on gear ratio and motor type)
70 arc-sec
Max. Speed
Stepper Motor: 30°/sec (90:1 gear ratio), 50°/sec (45:1 gear ratio) Servo Motor: 100°/sec (90:1 gear ratio), 200°/sec (45:1 gear ratio)
Unidirectional Repeatability
5 arc-sec
Bi-directional Repeatability
45 arc-sec
Max Load Capacity
20.4 kg (45 lbs)
Travel Range
360° Continuous
Optical rotary encoder mounted to rear of motor, 1000 lines (4000 CPR) with Index (Optional, Standard with servo motor)
Limit Switches
Optical Home Switch (optional) Optical index mark on encoder (with encoder option)
Gear Ratio
90:1 or 45:1
Stage Weight
1.4 kg (3 lbs)
Aluminum Alloy Construction
Black Anodize
RM-3 Motorized Rotary Stage RM-3 Motorized Rotary StageClick to Enlarge
RM-3 MDrive Motorized Rotary Stage RM-3 MDrive Motorized Rotary StageClick to Enlarge
RM-3 Servo Motorized Rotary Stage RM-3 Servo Motorized Rotary StageClick to Enlarge
Adapter Plate RM-3 to Linear Stages Adapter Plate RM3 to LSClick to Enlarge
Motor Options
Size 17 Stepper Motor
  • NEMA 17 high torque brushless motor
  • 1.33 Amp/Phase
  • 2.5 Ohm/Phase
  • 42 oz-in holding torque
  • 1.8 degrees/step
  • Compatible with the following motion controllers: NSC-A1 Series | NSC-A2L Series | NSC-G Series
Size 17 MDrive Intelligent Stepper Motor
The MDrive motor is a NEMA size 17 high torque 1.8° stepper motor integrated with an advanced, high resolution microstepping driver and a full featured programmable motion controller. With the MDrive motor there is no need for an external motion controller.
  • Integrated microstepping driver, motion controller and high torque motor
  • Two +5 to +24 VDC I/O lines
  • One 10 bit analog input selectable: 0 to +10 VDC, 0 to +5 VDC
  • RS-422/485 Communications
  • Input Voltage: +24 VDC
Download MDrive Software and User Manual
CAD Files

CAD Files – Adapter Plates – STEP File Format

RM-3 to Linear Stages

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