Description
Pacific Scientific H32NCHA-LNN-NS-00 Hybrid Stepper Motor
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Pacific Scientific |
| Model | H32NCHA-LNN-NS-00 |
| Series | H-Series |
| Product Type | Hybrid stepper motor |
| Frame Size | NEMA 23 |
| Motor Type | Hybrid step motor |
| Winding | 4-lead parallel |
| Rotor Stacks | 2 |
| Holding Torque | 3.14 N·m / 445 oz-in |
| Rated Phase Current | 5.6 A |
| Phase Resistance | 0.39 Ω |
| Shaft Configuration | Single / smooth |
| Mounting | NEMA |
| Typical Use | Positioning and motion-control axes |
The part-specific data available for this exact model also describes the motor as a low-inertia H-Series hybrid stepper intended for applications requiring controlled positioning and repeated start/stop motion.
Product Introduction
The Pacific Scientific H32NCHA-LNN-NS-00 is a legacy H-Series hybrid stepper motor designed for controlled incremental motion in industrial machinery. Its NEMA 23 mechanical format, two-stack rotor construction and 4-lead parallel winding make it suitable for positioning systems where the drive and motor must be matched to the required torque and current profile.
The 3.14 N·m holding-torque rating provides a useful reference for axis sizing, but it should not be interpreted as the available torque at every operating speed. Stepper-motor torque falls with increasing speed, making the original drive settings and machine load important when selecting a replacement.
H32NCHA-LNN-NS-00
Application Scenarios & Field Pitfalls — The Engineer’s Perspective
Engineering Pain Point
A stepper motor can appear electrically healthy while still causing positioning problems. Missed steps, excessive heating, resonance, insufficient acceleration torque, or mechanical binding can all produce similar symptoms. Replacing the motor without checking the drive current and mechanical load can simply reproduce the original problem.
Typical Applications
- Industrial positioning axes
- Packaging and indexing machinery
- CNC and machine-tool auxiliary axes
- Printing and material-handling equipment
- Legacy factory automation motion systems
Technical Pitfalls
1. Match the winding configuration.
The H32NCHA-LNN-NS-00 is specified with a 4-lead parallel winding. The drive must be configured for the corresponding connection and current requirements.
2. Verify the drive before replacement.
The 5.6 A rated-current figure is a motor characteristic, not a recommendation to apply arbitrary current from any stepper drive. Check the original Pacific Scientific drive or equivalent drive configuration before commissioning.
3. Do not use holding torque as running torque.
The published 3.14 N·m figure is the holding-torque specification. Actual available torque depends on speed, drive voltage, current regulation, acceleration and load inertia.
4. Check the mechanical frame carefully.
The exact model is identified as a NEMA 23 motor. Some online listings incorrectly describe it as NEMA 34. That distinction directly affects mounting-hole spacing, shaft alignment and machine interchangeability.
5. Inspect the coupling and load before condemning the motor.
Backlash, coupling misalignment, excessive friction and a mechanically overloaded axis can cause missed steps even when phase resistance and insulation measurements are normal.
6. Confirm the complete part number.
The suffix LNN-NS-00 is part of the motor identification. Do not substitute another H32 motor solely because the basic H32 designation matches; H-Series variants can differ in winding, shaft and mechanical configuration.
Related Products
- Pacific Scientific H31NRLP-LNN-NS-00 — H-Series NEMA 23 hybrid step motor with a different motor configuration.
- Pacific Scientific H32NCHT-LNN-NS-00 — H-Series motor variant with a different functional configuration.
- Pacific Scientific H32NCLP-LEN-PD-00 — H-Series NEMA 23 hybrid/servo motor variant.
- Pacific Scientific H32NLEP-LSN-NS-02 — H-Series NEMA 23 hybrid step motor with a different winding/shaft configuration.
- Pacific Scientific H32NMFT-LNW-NS-00 — H-Series NEMA 34 hybrid step motor.
- Pacific Scientific H32NREA-LNN-NS-00 — H-Series hybrid step motor with a different rotor and torque configuration.
- Pacific Scientific 6210 — Related stepper-drive family associated with Pacific Scientific motion systems.
- Pacific Scientific 6215 — Related microstepping drive family.
The H-Series catalog contains several visually similar motors with different frame sizes, winding arrangements and mechanical configurations. A related motor should therefore be treated as an engineering alternative, not an automatic replacement.
Procurement Note
For H32NCHA-LNN-NS-00, the critical checks are NEMA 23 frame, 4-lead parallel winding, 5.6 A phase rating, 3.14 N·m holding torque, shaft configuration, connector/lead arrangement, and the existing stepper-drive settings.
There is substantial catalog noise around this part. Several pages incorrectly identify it as an analog-output module, servo drive, or 32-channel control module and publish unrelated voltage, Ethernet, RS-485, and temperature specifications. Those claims conflict with the part-specific references identifying H32NCHA-LNN-NS-00 as a Pacific Scientific H-Series hybrid stepper motor.
For a legacy machine replacement, match the motor to the original drive and mechanical axis, rather than selecting solely by torque or frame size.
