NEMA17 PR42HS48-1204A-20F 5.6kg-cm Stepper Motor-D Type Shaft
NEMA17 PR42HS48-1204A-20F 5.6kg-cm Stepper Motor-D Type Shaft
NEMA17 PR42HS48-1204A-20F 5.6kg-cm Stepper Motor-D Type Shaft
The NEMA17 PR42HS48-1204A-20F is a precision hybrid stepper motor featuring a D-type shaft configuration, delivering 5.6 kg-cm holding torque with 1.2A phase current rating. This motor is engineered for applications requiring accurate positional control and repeatable motion in compact form factors, making it ideal for CNC machines, 3D printers, robotic arms, and industrial automation systems. The D-type shaft design ensures secure mechanical coupling without slippage, solving the critical challenge of maintaining precise angular positioning in high-frequency switching environments.
Product Overview
The NEMA17 PR42HS48-1204A-20F operates on the principle of electromagnetic field interaction between permanent magnets and energized stator coils. When sequential current pulses are applied through the stepper driver, the rotor advances through discrete angular steps, typically 1.8 degrees per full step or 0.9 degrees per half-step. This motor features a 48mm body length with integrated mounting flange, making it compatible with standard NEMA17 mechanical assemblies. The 5.6 kg-cm torque specification ensures sufficient holding force for vertical load applications and provides adequate acceleration capability for dynamic positioning tasks.
What distinguishes this model is its optimized coil winding configuration (PR42HS48 designation) that balances holding torque with thermal efficiency, allowing continuous operation without excessive heat generation. The 1.2A current rating per phase enables direct compatibility with popular stepper drivers like DRV8825, A4988, and TMC2208, eliminating the need for external current limiting circuits. The D-type shaft provides superior mechanical security compared to round shafts, preventing rotational slippage under load and ensuring backlash-free operation critical for precision applications.
Key Specifications
| Specification | Details |
| Product Type | NEMA17 Hybrid Stepper Motor |
| Brand | PR Series - OEM Grade |
| 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 |
| Holding Torque | 5.6 kg-cm (55 mN-m) |
| Phase Current | 1.2A per phase |
| Step Angle | 1.8 degrees full step / 0.9 degrees half step |
| Shaft Type | D-type shaft 5mm diameter |
| Body Length | 48mm NEMA17 standard |
| Winding Resistance | 2.8 ohms per phase typical |
Key Features
- D-Type Shaft Design: Provides positive mechanical locking preventing rotational slippage and ensuring backlash-free positioning in precision applications
- 5.6 kg-cm Holding Torque: Sufficient force for vertical load support and dynamic acceleration in CNC and 3D printing applications
- 1.2A Phase Current Rating: Direct compatibility with popular stepper drivers including DRV8825, A4988, and TMC2208 without external current limiting
- Optimized PR42HS48 Winding: Balanced torque-to-heat ratio enabling continuous operation with minimal thermal management requirements
- NEMA17 Standard Form Factor: Drop-in compatibility with existing mechanical assemblies, mounting brackets, and coupling systems
- Hybrid Motor Technology: Combines permanent magnet rotor with electromagnetic stator coils for superior torque density and holding force
Applications and Use Cases
- 3D Printer Extruder and Axis Motors: Delivers precise layer-by-layer positioning with 0.9-degree half-step resolution for high-resolution printing on RepRap and Prusa platforms
- CNC Machine Tool Positioning: Provides accurate XYZ axis control with 5.6 kg-cm holding torque for spindle feed rates and cutting tool positioning in small to medium-scale machining
- Robotic Arm Joint Actuation: Enables repeatable multi-axis motion control for collaborative robots and industrial automation arms requiring compact motor packages
- Automated Laboratory Equipment: Powers sample dispensers, carousel indexing, and precision stage positioning in medical and pharmaceutical automation systems
- Surveillance Camera Pan-Tilt Mechanisms: Provides smooth horizontal and vertical tracking with holding torque sufficient for camera payload stabilization
- Document Scanning and Paper Feed Systems: Controls precise paper advance mechanisms in document scanners and automated mail sorting systems
How to Use
To integrate the NEMA17 PR42HS48-1204A-20F into your system, first identify the four motor wires corresponding to coil A and coil B phases. Connect the motor to your stepper driver (DRV8825, A4988, or equivalent) ensuring correct phase wiring - typically red and green for coil A, blue and black for coil B. Supply 12-24V DC power to the driver module and configure microstepping settings via jumper pins on the driver board. The 1.2A phase current rating means you can operate this motor safely at full current without additional heat sinking on most standard drivers.
For mechanical installation, mount the motor using the four M3 threaded holes on the NEMA17 flange. The D-type shaft accommodates standard 5mm couplings or pulleys with D-shaped bores. Apply a small amount of threadlocker on coupling set screws to prevent loosening during operation. When programming motion sequences, use 200 steps per revolution for full-step mode or 400 steps per revolution for half-step mode. For applications requiring smooth motion at low speeds, implement microstepping at 1/8 or 1/16 resolution on your driver to reduce vibration and audible noise.
Frequently Asked Questions
What is the difference between full-step and half-step operation modes?
Full-step mode energizes one coil at a time, advancing the rotor 1.8 degrees per step with 200 steps per revolution. Half-step mode alternates between single and dual coil energization, achieving 0.9-degree steps with 400 steps per revolution and smoother motion. Half-step mode provides twice the resolution and reduces vibration but requires slightly more complex driver logic. For 3D printing and CNC applications, half-step mode is recommended for superior print quality and machining surface finish.
Can this motor handle vertical loads and what is the maximum safe load?
The 5.6 kg-cm holding torque translates to approximately 570 grams of vertical load capacity when the motor shaft is vertical. This assumes the load is applied at the end of the shaft with no mechanical advantage. For heavier loads, use a pulley or lead screw mechanical advantage system. Always verify holding torque under actual operating conditions as external friction, bearing drag, and coupling efficiency reduce effective load capacity by 20-30 percent in real-world installations.
What driver modules are compatible with this motor?
This motor is fully compatible with DRV8825, A4988, TMC2208, TMC2209, and similar stepper drivers rated for 1.2A or higher per phase. The 2.8 ohm phase resistance allows operation at 12-24V supply voltage. Avoid drivers rated below 1.0A as they will not deliver full torque. For optimal performance, use TMC series drivers which offer microstepping up to 1/256 resolution, reducing noise and vibration significantly compared to DRV8825 drivers limited to 1/16 microstepping.
How do I prevent motor stalling and loss of position?
Motor stalling occurs when load torque exceeds holding torque or when step frequency exceeds motor acceleration capability. Reduce acceleration rates in your firmware, implement current limiting at 1.2A maximum, and verify mechanical load does not exceed 5.6 kg-cm. Use half-step or microstepping modes which provide smoother acceleration profiles. Add mechanical feedback via optical encoders if critical position verification is required. For 3D printers, stalling typically indicates over-tightened belts or misaligned axes - check mechanical assembly first before increasing current.
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.
Why Buy from The Tech Depot
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy NEMA17 PR42HS48-1204A-20F 5.6kg-cm Stepper Motor-D Type Shaft Online in India
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