T22NSLE-LDN-SS-02 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific T22NSLE-LDN-SS-02 is a stepper motor from the T High Torque Motors series. It provides a holding torque of 1.98 Newton-meters and a detent torque of 0.042 Newton-meters. The motor features a step angle of 1.8 degrees, operates with 1.5 A DC per phase, and has a bolt circle diameter of 2.625 inches.
Internal Product Review
The T22NSLE-LDN-SS-02 is a Pacific Scientific high torque stepper motor with 1.98 N-m holding torque and a 1.8° step angle. Two-phase construction and 17 mH inductance support smooth indexing and stable electrical response in positioning applications. Strong torque density makes the motor a very capable choice for precise motion control.
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Product Description:
The T22NSLE-LDN-SS-02 is a hybrid stepper motor produced by Pacific Scientific within the T High Torque Motors series. This two-phase actuator converts digital pulse trains into proportional shaft rotation for positioning conveyors, pick-and-place heads, and metering pumps in industrial automation. Its rare-earth magnet design provides high torque for its frame size, while the standard NEMA mounting pattern allows the unit to fit existing brackets without remachining. The device suits applications that require repeatable incremental movement without a feedback transducer.
Each phase draws 1.5 A DC, and the copper coils have a resistance of 2.9 ohms, establishing the nominal voltage required to produce rated torque. The inductive load of 17 mH limits the current rise, so many stepper controllers use a chopper scheme to maintain steady magnetic flux at rapid step rates. When energized, the rotor advances in discrete increments of 1.8°, providing 200 full steps per revolution for precise positioning. Static shaft loading can reach a holding torque of 1.98 N-m, enabling the energized motor to hold a stationary load without a mechanical brake. Drive settings should account for the phase current, coil resistance, and inductance to prevent excessive heat while maintaining the required torque.
The detent torque is 0.042 N-m, so back-driving resistance remains low when the windings are de-energized. Four mounting holes lie on a bolt circle measuring 2.625 in, matching compatible NEMA 23 accessories. The overall body length measures 77.7 mm, while the square frame width is 56.9 mm, leaving space near the motor face for couplings or pulleys. The maximum internal winding temperature is 100 °C, which must be considered when planning enclosure ventilation and thermal derating. Adequate airflow around the housing helps remove heat generated during continuous operation, particularly when the motor holds a load for extended periods. The low unpowered detent torque also allows the shaft to be moved more easily when the drive is disabled, provided the connected mechanism permits back-driving.
