Description
Core Product Summary
The Pacific Scientific E22SSLT-LNN-NS-04 (now under the Kollmorgen brand family) is an industrial NEMA 23 frame hybrid stepper motor belonging to the SIGMAX E Series lineup. Engineered with SIGMAX flux-concentrating technology, the motor incorporates rare-earth magnets embedded between stator teeth to deliver enhanced holding torque and high dynamic acceleration compared to standard hybrid stepper designs.
Featuring a standard 1.8° step angle (200 steps per revolution), this 2-phase motor is constructed with a dual smooth shaft configuration and terminal box connections for secure industrial wiring. It is built to withstand demanding motion control applications, offering high torque density in a compact physical footprint.
Key Technical Specifications
| Parameter | Specification |
| Manufacturer / Brand | Pacific Scientific (Kollmorgen) |
| Model Number | E22SSLT-LNN-NS-04 |
| Motor Family / Technology | SIGMAX E Series High-Torque Stepper |
| Frame Size | NEMA 23 (approx. 57.2 mm × 57.2 mm faceplate) |
| Step Angle | 1.8° (200 full steps/rev) |
| Rotor Stacks | 2 rotor stacks |
| Shaft Configuration | Dual shaft (front and rear smooth shafts, no keyway) |
| Connection Type | Terminal box / terminal board connection |
| Winding Type | Standard factory winding configuration |
| Mounting Standard | NEMA standard 4-hole face mount |
Detailed Product Overview
The Pacific Scientific E22SSLT-LNN-NS-04 stepper motor is designed for high-precision positioning and velocity control in automated machinery, medical devices, packaging equipment, and CNC axis drives. By utilizing SIGMAX flux-focusing stator geometry, the motor concentrates magnetic lines of force into the air gap, increasing torque output across low to mid-speed operating ranges without increasing frame size.
The motor’s 2-stack rotor construction balances thermal dissipation with high holding torque. The dual-shaft design allows the primary front shaft to drive the mechanical load while the rear shaft extension accommodates optional feedback hardware, such as optical encoders or manual handwheels for positioning adjustments during setup.
The integrated terminal box junction provides an enclosure for connecting motor phase leads, shielding wire joints from dust and mechanical strain in plant environments.
Dimensions, Mounting & Connection Notes
- Frame & Mounting: NEMA 23 flange dimensions (57.2 mm square) with standard 4-bolt clearance mounting holes.
- Shaft Details: Dual smooth shafts (front and rear); ensure couplings use clamping or set-screw designs suited for non-keyed round shafts.
- Wiring & Termination: Internal connections are accessible via the terminal box cover plate; ensure proper strain relief on field wiring entering the box conduit entry.
- Thermal Management: The motor body acts as a primary heat sink. Mount the motor onto a metallic frame or mounting plate to facilitate heat dissipation during continuous operation.
E22SSLT-LNN-NS-04
E22SSLT-LNN-NS-04
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
| Drive / Amplifier | 2-Phase Stepper Motor Drives (Microstepping or Full/Half Step) | Compatible with standard bipolar and unipolar stepper drives configured for NEMA 23 current limits. |
| Mounting Geometry | Standard NEMA 23 Faceplate | Fits standard NEMA 23 motor brackets and precision gearhead adapters. |
| Feedback Options | Rear Shaft Extension Accessories | Rear smooth shaft accommodates third-party encoders, dampers, or handwheels. |
FAQ
What is the frame size of the Pacific Scientific E22SSLT-LNN-NS-04?
The motor conforms to the standard NEMA 23 frame size specification.
What is SIGMAX technology in the E22SSLT-LNN-NS-04 motor?
SIGMAX technology utilizes stator-embedded rare-earth magnets to concentrate flux in the air gap, providing higher holding torque and acceleration performance than conventional hybrid steppers.
Does the motor have a single or dual shaft?
The E22SSLT-LNN-NS-04 model features a dual-shaft configuration with smooth front and rear shafts.
What step angle does the E22SSLT-LNN-NS-04 provide?
It provides a standard 1.8° step angle, equivalent to 200 full steps per shaft revolution.
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