G-Penny iESS57-36 Compact Closed-Loop Stepper Motor – 1.0Nm to 3.0Nm (Special Order)

G-Penny iESS57-36 Compact Closed-Loop Stepper Motor

New for 2026 • Compact integrated motor, encoder, and driver • 1.0Nm, 2.0Nm, or 3.0Nm • Optional 24VDC brake

The G-Penny iESS57-36 is a new-for-2026 compact closed-loop stepper design created for CNC builders who want integrated feedback and simplified wiring without the longer body of traditional integrated stepper systems. The motor, encoder, and driver are combined into one NEMA 23 package, reducing panel space and eliminating the need for a separate external stepper driver.

Available Configurations

• 1.0Nm — no brake or 24VDC brake
• 2.0Nm — no brake or 24VDC brake
• 3.0Nm — no brake or 24VDC brake

Why Choose the iESS57-36?

• New 2026 motor design: A newer-generation compact integrated platform for modern CNC builds and retrofits.
• Compact integrated design: Motor, encoder, and driver are built into one assembly.
• Closed-loop position feedback: Helps detect and correct position error instead of relying only on commanded steps.
• NEMA 23 mounting pattern: Suitable for many CNC routers, mills, and retrofit applications.
• Pulse-and-direction control: Compatible with supported CNC controllers using standard motion signals.
• Selectable microstepping: Allows motion resolution to be configured for the machine.
• Closed-loop or open-loop operation: Supports flexible setup and commissioning.
• Alarm and position-reached outputs: Supports system monitoring and fault handling.
• 24–36VDC motor input: Designed for compact CNC motion-control power systems.
• Up to 200kHz pulse input: Suitable for higher-speed step-and-direction control.
• RS-232 parameter access and RS-485 capability: Supports configuration and communication where compatible.
• 8mm output shaft

Choosing the Brake Option

• No Brake: Best for X, Y, rotary, and other axes that will not move under gravity when power is removed.
• 24VDC Power-Release Brake: Recommended for vertical axes, especially Z axes carrying a heavy spindle, ATC spindle, or other load. The brake releases when 24VDC is applied and locks when power is removed.

The brake uses separate power leads and may require a relay, transistor output, or other properly rated switching device. Do not power the brake directly from a controller enable output unless that output is specifically rated for the required current.

Compatibility and Wiring

These motors use standard pulse-and-direction control, but wiring, signal requirements, and terminal assignments may differ from MASSO-branded and PwnCNC-branded motors. Do not assume wire colors or terminal positions are interchangeable.

PwnCNC wiring guidance will be provided for supported controller configurations as validation is completed. Depending on the controller and installation, additional conductors, jumpers, or signal-conditioning components may be required.

Before Ordering

• Confirm the required torque for each axis.
• Confirm whether a holding brake is needed.
• Verify NEMA 23 mounting dimensions and available clearance.
• Verify the 8mm shaft and coupling compatibility.
• Confirm a suitable 24–36VDC power supply with adequate current capacity.
• Confirm controller signal type and wiring requirements.
• Confirm brake-switching capacity when selecting a brake model.

Special-Order Policy

This motor is procured specifically for your project. Once procurement has begun, cancellations, configuration changes, or returns may be restricted or subject to restocking and freight charges. Please verify the selected torque and brake configuration before ordering.