Yancheng Weigu Intelligent Technology Co., Ltd.
                                                                                                           
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5 Years
Since 2021
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NEMA 17 Stepper Motor 0.9° Step Angle 42mm Frame 10V 0.5A for CNC and 3D Printing

Price Negotiable
Price: $5~10/unit
MOQ: 1unit
Delivery Time: 7-30 work days
Brand: WEIGU
Product Description
High Precision NEMA 17 Stepper Motor Overview

This 0.9° step angle NEMA 17 stepper motor delivers exceptional precision for demanding motion control applications. With its compact 42mm frame and efficient 4-wire bipolar design, it provides smooth, accurate performance in CNC machining, 3D printing, and automation systems.

Key Features & Benefits
  • 0.9° step angle for ultra-fine resolution and precise positioning
  • NEMA 17 standard (42mm frame) for easy integration with common systems
  • 4-wire bipolar configuration for simple wiring and efficient operation
  • Low power consumption (10V, 0.5A) for energy-efficient performance
  • Minimal vibration and noise for smooth, quiet operation
Primary Applications
  • 3D Printers: Extruder control and precise axis movement
  • CNC Machines: High-detail milling and engraving operations
  • Robotics & Automation: Articulated arms and linear actuators
  • Medical & Laboratory Equipment: Precision positioning systems
General Specifications
ParameterSpecification
Step Angle0.9°
Step Angle Accuracy±5% (full step, no load)
Resistance Accuracy±10%
Inductance Accuracy±20%
Temperature Rise80℃ max
Ambient Temperature-20℃ to +50℃
Insulation Resistance100 MΩ min, 500VDC
Dielectric Strength500VAC for 1 minute
Shaft Radial Play0.02 max (450g-load)
Shaft Axial Play0.08 max (450g-load)
Electrical Specifications
Model No.Step AngleMotor LengthCurrent/PhaseResistance/PhaseInductance/PhaseHolding TorqueNumber of LeadsDetent TorqueRotor Inertia
42BYGH34-13340.9°34mm1.33A2.1Ω2.5mH2.2kg.cm4120g.cm34g.cm²
42BYGH34-04060.9°34mm0.4A24Ω15mH1.6kg.cm6120g.cm34g.cm²
42BYGH34-09560.9°34mm0.95A4.2Ω2.5mH1.6kg.cm6120g.cm34g.cm²
42BYGH40-04060.9°40mm0.4A30Ω30mH2.6kg.cm6150g.cm54g.cm²
42BYGH40-16840.9°40mm1.68A1.65Ω3.2mH3.6kg.cm4150g.cm54g.cm²
42BYGH40-12060.9°40mm1.2A2.7mH2.9kg.cm6150g.cm54g.cm²
42BYGH48-04060.9°48mm0.4A30Ω25mH3.1kg.cm6260g.cm68g.cm²
42BYGH48-16840.9°48mm1.68A1.65Ω2.8mH4.4kg.cm4260g.cm68g.cm²
42BYGH48-12060.9°48mm1.2A3.3Ω2.8mH3.17kg.cm6260g.cm68g.cm²

Custom winding and shaft configurations available upon request for specialized applications.

Mechanical Dimensions
NEMA 17 stepper motor mechanical dimensions diagram showing 42mm frame specifications

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Yancheng Weigu Intelligent Technology Co., Ltd.
Location No. 108-1, Chengxiang East Road, Dagang Town, Yancheng City, Yandu District, Jiangsu Province
Contact Person li

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