JK57HS112-3004-03 NEMA23 30.61 kg-cm Hybrid Bipolar Stepper Motor – D-Type Shaft
JK57HS112-3004-03 NEMA23 30.61 kg-cm Hybrid Bipolar Stepper Motor – D-Type Shaft
JK57HS112-3004-03 NEMA23 30.61 kg-cm Hybrid Bipolar Stepper Motor – D-Type Shaft
The JK57HS112-3004-03 is a NEMA23 hybrid bipolar stepper motor delivering 30.61 kg-cm holding torque, engineered for precision motion control in industrial automation and robotics applications. This motor features a D-type shaft configuration that ensures secure mechanical coupling and repeatable positioning in CNC machines, 3D printers, and automated assembly systems. It solves the critical challenge of achieving accurate, synchronized multi-axis movement without feedback sensors, making it ideal for engineers requiring cost-effective stepper solutions with high holding torque in compact form factors.
Product Overview
The JK57HS112-3004-03 NEMA23 stepper motor represents the convergence of hybrid stepper motor technology with industrial-grade torque specifications. Hybrid stepper motors combine permanent magnet and variable reluctance principles, enabling smooth stepping action with minimal resonance and exceptional holding torque. This 30.61 kg-cm rated motor operates through bipolar winding configuration, requiring a 4-wire connection pattern that delivers current in alternating directions through motor coils to produce precise 1.8-degree step increments. The D-type shaft provides a flat surface for secure coupling to pinion gears, lead screws, and timing pulleys without slippage, critical for applications demanding positional accuracy within 0.05mm tolerances.
The NEMA23 frame size (57mm x 57mm mounting face) positions this motor as the industry standard for medium-load automation tasks requiring torque beyond NEMA17 capabilities but without the footprint demands of NEMA34 motors. The 30.61 kg-cm holding torque ensures the motor maintains position against external mechanical loads when de-energized, essential for vertical axis applications and load-holding scenarios. Advanced hybrid design minimizes cogging torque variations, resulting in smoother motion profiles and reduced mechanical vibration compared to permanent magnet steppers, translating to longer bearing life and quieter operation in production environments.
Key Specifications
| Specification | Details |
| Product Type | NEMA23 Hybrid Bipolar Stepper Motor |
| Model Number | JK57HS112-3004-03 |
| Holding Torque | 30.61 kg-cm at rated current |
| Shaft Type | D-Type Shaft with flat surface |
| Frame Size | NEMA23 57mm x 57mm |
| Step Angle | 1.8 degrees per step |
| Winding Configuration | Bipolar 4-Wire |
| Rated Current | 3.0A per phase |
| Coil Resistance | 1.1 ohms per phase |
| Coil Inductance | 3.8mH per phase |
| Operating Temperature | -20 to +50 degrees Celsius |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
Key Features
- High Holding Torque of 30.61 kg-cm enables vertical load support and prevents back-driving in load-holding applications without continuous power consumption
- D-Type Shaft Design provides positive mechanical coupling with reduced slippage, critical for precision positioning in CNC routing and laser cutting systems
- Hybrid Stepper Technology minimizes cogging and resonance effects, delivering smooth acceleration profiles and reducing mechanical vibration in high-speed applications
- Bipolar 4-Wire Configuration allows directional control and microstepping capability with standard stepper drivers, enabling 16x microstepping for smoother motion resolution
- NEMA23 Frame Size offers optimal torque-to-footprint ratio for space-constrained automation cabinets and robotic arm joint actuation
- 3.0A Rated Current per phase provides dynamic torque output while remaining compatible with standard industrial stepper driver modules
Applications and Use Cases
- CNC Machine Tools: Precision XY-axis positioning in desktop CNC routers and engravers requiring 0.1mm repeatability with holding torque against cutting forces
- 3D Printer Z-Axis Drive: Vertical bed elevation control in FDM printers where holding torque prevents layer shift and maintains print surface level during extended print cycles
- Automated Assembly Systems: Multi-axis robotic pick-and-place mechanisms in manufacturing requiring synchronized stepping across three axes without encoder feedback
- Industrial Textile Machinery: Fabric tension control and pattern positioning in embroidery machines demanding precise angular increments and load-holding capability
- Laboratory Automation: Microscope stage positioning and fluid dispensing systems requiring repeatable micron-level movements with inherent position memory
- Surveillance Pan-Tilt Systems: Motorized camera mounting platforms requiring smooth, silent stepping motion with holding torque against gravity on inclined axes
How to Use
Begin by identifying your stepper driver module compatibility with NEMA23 motors and bipolar 4-wire configurations. The JK57HS112-3004-03 requires connection to a dedicated stepper driver accepting step and direction logic signals, typically from a motion controller or microcontroller board like Arduino or industrial PLC. Connect the four motor wires to the driver output terminals following the color-coded winding pairs: typically red-blue represents one coil phase and green-black the second phase. Verify driver current settings match the 3.0A rated current specification to prevent thermal overload and maintain 30.61 kg-cm holding torque performance.
Mount the motor using the four M5 mounting holes on the NEMA23 face, ensuring the D-type shaft couples securely to your mechanical load through appropriate adapters or couplings. Configure your motion control software to generate step pulses at frequencies between 500Hz and 3000Hz for smooth acceleration profiles, avoiding resonance frequencies near 1200Hz that can cause torque ripple. For microstepping operation, program your stepper driver for 16x microstepping to achieve smoother motion at the cost of reduced dynamic torque output. Always implement mechanical load calculations to verify the 30.61 kg-cm holding torque exceeds your application's static load requirements by a safety factor of 1.5 or greater.
Frequently Asked Questions
What is the maximum stepping frequency for the JK57HS112-3004-03?
The JK57HS112-3004-03 can reliably step at frequencies up to 3000Hz with proper acceleration ramping and appropriate stepper driver current settings. At full 3.0A current, maximum speed approaches 1000 RPM with full holding torque. Higher frequencies require gradual acceleration to prevent step loss. For applications requiring sustained high-speed operation, implement S-curve acceleration profiles to reduce mechanical shock and extend bearing life.
Can I use microstepping with this motor and what are the benefits?
Yes, the JK57HS112-3004-03 supports microstepping up to 16x with compatible stepper drivers. Microstepping divides each 1.8-degree step into smaller increments, enabling 0.1125-degree resolution at 16x microstepping. Benefits include smoother motion profiles, reduced vibration, improved positioning accuracy in load-critical applications, and quieter operation. Trade-off is reduced dynamic torque output at higher microstepping levels, though holding torque remains unaffected.
What is the difference between holding torque and dynamic torque in this motor?
Holding torque of 30.61 kg-cm is the maximum load the de-energized motor can resist without rotating, critical for vertical axis applications and load-holding scenarios. Dynamic torque, typically 70-80 percent of holding torque, is the actual torque available during stepping operation. The JK57HS112-3004-03 delivers approximately 22-24 kg-cm dynamic torque at rated 3.0A current, sufficient for acceleration and load movement. Always design mechanical systems using dynamic torque for motion calculations and holding torque for static load verification.
How do I prevent step loss and ensure reliable positioning?
Step loss occurs when motor torque cannot overcome load resistance, causing missed steps. Prevent this by calculating peak load torque including acceleration forces and friction, then selecting motor dynamic torque 1.5-2.0 times higher. Implement gradual acceleration ramps rather than step-pulse bursts, use appropriate mechanical advantage through gearing or lead screw pitch, and verify stepper driver current output matches motor specifications. Monitor motor temperature during operation; temperatures exceeding 80 degrees Celsius indicate overload conditions requiring load reduction or current adjustment.
Is the D-Type shaft compatible with standard stepper couplings?
The D-type shaft is compatible with flex couplings and rigid couplings designed for 8mm D-shafts. The flat surface prevents rotational slippage compared to round shafts, making it ideal for precision applications. Ensure coupling bore size matches 8mm diameter and the flat surface alignment is correct before tightening set screws. For lead screw applications, use rigid couplings; for flexible load compensation, use flex couplings with appropriate torque ratings exceeding 30.61 kg-cm.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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