The RB-90 Series rotary stage offers high speed rotation with a large 90 mm aperture.
The 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. The RB-90 utilizes a timing belt to couple the motor to the spindle, eliminating backlash. The RB rotary stage is available with a 2 phase stepper motor or an MDrive stepper motor with integrated controller. The motor can be installed from the top or bottom of the rotary stage to give clearance for large diameter payloads. Ordering
RB-90 Rotary Stage
Typical lead-time: 8 Weeks
Typical lead-time: MDrive Motor Option – Limited Availability
$2,705.00
 RS-485/422 to USB Adapter with ribbon cable for MDrive MotorRS-485/422 to USB adapter with ribbon cable for MDrive motor. $125.00 |  Power Supply, 24V, 2.5AUniversal AC/DC Power Supply $52.00 |
Specifications
Resolution | 0.0036° |
Accuracy | 0.1 degree |
Max. Speed | 200 RPM (Stepper Motor) | 400 RPM (Servo Motor) |
Repeatability | 0.01 degree |
Max Load Capacity | 9.1 kg (20 lbs) |
Travel Range | 360° Continuous |
Encoder | Optical rotary encoder mounted to rear of motor, 1000 lines (4000 CPR) with Index (Optional) |
Limit Switches | None |
Origin | Inductive Home Switch Optical index mark on encoder (with encoder option) |
Gear Ratio | 4:1 |
Stage Weight | 2.4 kg (5.3 lbs) |
Material | Aluminum Alloy Construction |
Finish | Black Anodize |
Dimensions
RB-90 Rotary Stage 
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
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
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
CAD Files
CAD Files – STEP File Format
RB-90-1-D, Stepper Motor, Motor Down
RB-90-1-U, Stepper Motor, Motor Up
RB-90-2-D, Stepper Motor, Encoder, Motor Down
RB-90-2-U, Stepper Motor, Encoder, Motor Up
RB-90-3-D, MDrive Motor, Motor Down
RB-90-3-U, MDrive Motor, Motor Up
RB-90-4-D, MDrive Motor, Motor Down
RB-90-4-U, MDrive Motor, Motor Up
RB-90-1-D, Stepper Motor, Motor Down
RB-90-1-U, Stepper Motor, Motor Up
RB-90-2-D, Stepper Motor, Encoder, Motor Down
RB-90-2-U, Stepper Motor, Encoder, Motor Up
RB-90-3-D, MDrive Motor, Motor Down
RB-90-3-U, MDrive Motor, Motor Up
RB-90-4-D, MDrive Motor, Motor Down
RB-90-4-U, MDrive Motor, Motor Up