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soya nema 11 28mm 1.8 degree open loop hybrid stepper motor

SOYA NEMA 11 (28mm) High-Torque Open-Loop Stepper Motor Series

The SOYA NEMA 11 (28mm) is an industrial-grade 2-phase open-loop hybrid stepper motor series featuring a standard 1.8° step angle. Engineered by SoyaMotor to balance compact size constraints with reliable mechanical motion, this series utilizes high-grade magnetic cores to generate premium holding torque. Available in 32mm, 45mm, and 51mm stack lengths with versatile 4-lead and 6-lead configurations, it is completely optimized for precision 3D printers, medical instruments, automated dispensing systems, and robotics.

Model:
SY28HS
Brand:
SOYA

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Product Description

SOYA NEMA 11 (28mm) Open-Loop Hybrid Stepper Motor Series

Empower your compact motion frameworks with the precision-engineered SOYA NEMA 11 series hybrid stepper motor. Featuring a miniature 28mm square frame size and a standard 1.8° step angle, this open-loop actuator balances tight space restrictions with reliable torque delivery. Engineered entirely on our own factory floor from high-grade silicon cores and premium bearings, it suppresses electrical heat and mechanical noise to ensure outstanding continuous reliability.

Key Features & Benefits

⚡ Miniature High-Torque Build Delivers robust mechanical holding torque up to 950 g.cm within a compact 28mm framework, providing ideal positioning force for space-constrained mechanisms.

⚙️ 4-Lead & 6-Lead Flexibility Configured in standard 4-lead or 6-lead wiring options to perfectly match different industrial stepper drivers and electrical coil wiring requirements.

Industrial Grade Rigidity Manufactured directly on our own shop floor from high-silicon stamping steel and premium bearings to suppress mechanical vibration and electrical noise.

Flexible OEM Customization Fully customizable configurations available upon request, including custom shaft lengths, specialized D-flats, specific lead wire pinouts, and custom connectors.

Typical Applications

3D Printers CNC Routers Medical Devices Laboratory Automation Dispensing Machines Pick-and-Place Systems Textile Machinery Robotics

Technical Specifications

Model No.	Step Angle (°)	Motor Length (mm)	Current/ Phase (A)	Resistance/ Phase (Ω)	Inductance/ Phase (mH)	Holding Torque (g.cm)	Leads (No.)	Rotor Inertia (g.cm²)	Mass (Kg)
SY28HS32-0956	1.8	32	0.95	2.8	0.8	430	6	9	0.11
SY28HS32-0674	1.8	32	0.67	5.6	3.4	600	4	9	0.11
SY28HS45-0956	1.8	45	0.95	3.4	1.2	750	6	12	0.14
SY28HS45-0674	1.8	45	0.67	6.8	4.9	950	4	12	0.14
SY28HS51-0956	1.8	51	0.95	4.6	1.8	900	6	18	0.2

Dimension & Mechanical Drawings

NEMA 11 (28mm) Open Loop Stepper Motor DWG

Why Choose SOYAMOTOR?

Our roots go back to 2002 as “Songya Motor Control Factory”. In 2017, we incorporated as Changzhou Songya Electromechanical Co., Ltd., marketing our systems worldwide under our registered brand SOYAMOTOR. Leveraging over 20 years of deep expertise in stepper, servo, and brushless motor manufacturing, we design and produce a comprehensive range of premium CNC digital cutting tools on our own shop floor. Beyond oscillating knives, our in-house production includes servo oscillating knives, drag knives, kiss-cut knives, creasing wheels, rotary knives, V-cut tools, and punching tools—delivering factory-direct precision with 100% traceable quality.

✓ 20+ Years Industrial Expertise ✓ In-House Motor & Tool Manufacturing ✓ 100% Traceable Quality Control