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Download PDF Installing High-Torque Stepper Motors on Ball Screw Machines |
High-Torque Stepper Motor
Sherline’s high-torque stepper motor features the same NEMA 23 frame size as our standard stepper motor but delivers over 75% more torque – ideal for increased cutting feed rates and better performance on the Z-axis, where it can handle the added weight of the motor and headstock. Note that maximum rapid feed rate remains unchanged.
Important Compatibility Note: Due to the increased torque, these motors require an updated CNC coupler (P/N 671052, sold separately). If upgrading from systems using the discontinued coupler (P/N 67105), ensure you purchase the correct replacement.
Rated at 2 amps, these motors are fully compatible with all Sherline CNC machines, including complete CNC systems, our 4-axis driver box, CNC rotary tables and our linear and rotary motion controllers. No additional power supply upgrades are needed.
Dual-shaft design allows handwheel operation for manual control. Flats are precision-ground on both ends to secure handwheels and couplers via set screws. When used with Sherline motor mounts, the shaft end engaging the coupler must have a flat to prevent damage from the set screw. This may not be necessary in non-Sherline applications.
Each motor includes a six-lead cable with a 5-pin connector, pre-wired to interface seamlessly with Sherline’s CNC equipment, making setup fast and easy – just plug in and go.
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Frame size | NEMA #23 |
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Shaft | 1/4″ diameter, dual shafts |
Holding Torque | 1.35 N.m (Newton meters) 13.756 kg-cm (kilogram centimeter) 191.17 oz/in (ounce inch) 11.948 in/lb (inch pound) |
Maximum RPM | 530 RPM |
Axial-Force | Fa=15 N Max., or 3.37 lbf Max. |
Radial-Force | Fr=75 N Max., or 16.86 lbf Max. |
Rotor inertia | 480 g-cm2 |
Voltage | 4.5 V DC |
Current | 2 A |
Step Angle | 1.8° (200 steps/rev) |
Video instructions on how to remove and install Sherline CNC Stepper Motors
Removing Stepper Motors
Installing Stepper Motors
Aligning the Stepper Motor to the Ball Screw
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