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RM-8 Motorized Rotary Stage

This high capacity rotary stage features a 200mm diameter stainless steel table top designed to support a 700 lb load.

The design takes advantage of a single high capacity 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. It can be fitted with a high performance servo motor or with a stepper motor. The RM-8 utilizes a worm gear drive with a gear ratio of 80:1. The worm gear is preload to minimize the backlash in the gear train.

RM-8 Rotary Stage

Typical lead-time: 4 Weeks
Part No. RM-8

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
0.32 arc-sec (Stepper Motor)
±72 arc-sec
Max. Speed
20°/sec (Stepper Motor)
Repeatability (uni-directional)
5 arc-sec
Bi-directional Repeatability
45 arc-sec
Max Load Capacity
317 kg (700 lbs)
Travel Range
360° Continuous
Optical rotary encoder mounted to rear of motor, 4000 CPR with Index (Optional)
Limit Switches
Inductive home switch (Optional) Optical index mark on encoder (with encoder option)
Gear Ratio
Stage Weight
13.6 kg (30 lbs)
Aluminum Alloy Construction
Black Anodize
Motorized Rotary Stage : RM-8 Motorized Rotary Stage : RM-8Click to Enlarge
Motorized Rotary Stage : RM-8 MDrive Motorized Rotary Stage : RM-8 MDriveClick to Enlarge
Motorized Rotary Stage : RM-8 Servo Motorized Rotary Stage : RM-8 ServoClick to Enlarge
Motor Options
Nema 23 Brushless Servo Motor
Size 23 Brushless DC Servo Motor
  • NEMA 23 brushless DC servo motor
  • 4000 Count/rev optical rotary encoder with index mark
  • Continuous Torque: 0.81 Nm (116 oz-in)
  • Compatible with the following motion controller: NSC-G Series


Size 23 Stepper Motor
  • NEMA 23 high torque stepper motor
  • 2.8 Amp/Phase
  • 1.8 degrees/step
  • Compatible with the following motion controllers:
    NSC-A1 Series | NSC-G Series
Size 23 MDrive Intelligent Stepper Motor
The MDrive motor is a NEMA size 23 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
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