The RM-5 DE Precision Rotary Stage utilizes a direct read angular encoder for increased accuracy over the standard RM-5 rotary stage.
The design takes advantage of a single preloaded crossed roller bearing for the table movement. This de
sign 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 worm gear is preload to minimize the backlash in the gear train. The RM-5 DE is equipped with direct-read high resolution optical angular encoder mounted to the rotating output spindle. The angular encoders provide a reference mark for a homing repeatability of +/- 1 encoder count. This motorized rotary stage comes standard with a high torque NEMA 23 stepper motor.

Ordering
Specifications
Resolution | 0.36 arc-sec (Stepper Motor 72:1), 0.72 arc-sec (Stepper Motor 36:1) |
Accuracy | ±25 arc-sec |
Max. Speed | 25°/sec (72:1 gear ratio), 50°/sec (36:1 gear ratio) |
Repeatability | 2 arc-sec |
Max. Moment Load | 29.3 Nm (21.6 lb-ft) |
Max Load Capacity | 45.4 kg (100 lbs) |
Travel Range | 360° Continuous |
Encoder | Direct read optical angular encoder mounted to main spindle, 0.79 arc-sec resolution |
Limit Switches | None |
Origin | Index mark on encoder |
Gear Ratio | 72:1 or 36:1 |
Stage Weight | 5.3 kg (11.75 lbs) |
Material | Aluminum Alloy Construction |
Finish | Black Anodize |
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
- Compatible with the following motion controllers: NSC-A1 Series | NSC-G Series
CAD Files
CAD Files – STEP File Format
RM-5-1-DE