BIQU Nema17 Stepper Motor 40mm SY-17HS4401 (4 PCS)

Power your 3D printing projects with this professional-grade 4-pack of BIQU NEMA17 stepper motors featuring the reliable SY-17HS4401 model designed for demanding automation applications. These high-performance 40mm length stepper motors deliver exceptional precision with 1.8-degree step angles (200 steps per revolution) and robust 4.0-4.4 kg-cm holding torque, making them ideal for 3D printers, CNC machines, robotic systems, and precision positioning equipment. Each motor features premium copper windings, durable steel construction, and optimized magnetic design for smooth operation, reduced vibration, and extended service life. The 4-wire bipolar configuration ensures compatibility with popular stepper drivers including A4988, DRV8825, and TMC series, while the standard NEMA17 42mm x 42mm mounting pattern provides universal compatibility with most 3D printer frames, extruders, and automation systems requiring reliable, precise motor control.

Key Features:

High-Precision Performance: 1.8-degree step angle provides 200 steps per revolution for exceptional positioning accuracy and smooth motion control in demanding applications.

Robust Holding Torque: Delivers 4.0-4.4 kg-cm (40-44 N⋅cm / 56-62 oz-in) of holding torque for reliable performance under load with excellent resistance to position drift.

Professional 40mm Body: Optimal length provides excellent torque-to-size ratio while maintaining compact dimensions perfect for space-constrained 3D printer designs.

Premium Construction: High-quality copper windings, precision-machined steel housing, and optimized magnetic circuit design ensure long-lasting reliability and consistent performance.

Universal NEMA17 Compatibility: Standard 42mm x 42mm mounting pattern with M3 mounting holes fits virtually all 3D printer frames, extruders, and CNC applications.

Bipolar 4-Wire Design: Compatible with popular stepper drivers including A4988, DRV8825, TMC2208, TMC2209, and other standard bipolar driver modules.

Low Noise Operation: Engineered for quiet operation with minimized vibration and electromagnetic interference for professional workshop environments.

Value 4-Pack Bundle: Complete motor set perfect for full 3D printer builds, upgrades, or spare parts inventory with significant cost savings over individual purchases.

Specifications:

Model Number: SY-17HS4401

NEMA Size: 17 (42mm x 42mm mounting pattern)

Body Length: 40mm

Overall Dimensions: 42mm x 42mm x 40mm

Weight: Approximately 280g per motor

Step Angle: 1.8° ± 5% (200 steps/revolution)

Number of Phases: 2 (Bipolar configuration)

Holding Torque: 4.0-4.4 kg-cm (40-44 N⋅cm / 56-62 oz-in)

Rated Current: 1.5-1.7A per phase

Phase Voltage: 2.6V DC (nominal)

Phase Resistance: 1.5Ω ± 10% (at 20°C)

Phase Inductance: 2.8mH ± 20% (1KHz)

Shaft Diameter: 5mm with D-cut flat

Shaft Length: 24mm

Mounting Holes: 4 x M3 (31mm spacing)

Wire Configuration: 4-wire (Black A+, Green A-, Red B+, Blue B-)

Cable Length: 1 meter with connector

Operating Temperature: -10°C to +50°C

Insulation Class: Class B (130°C)

Applications: 3D Printers (X/Y/Z axes, extruders), CNC machines, robotic systems, automation equipment, camera platforms, linear actuators

Package Contents: 4x BIQU NEMA17 SY-17HS4401 Stepper Motors with cables