![[Discontinued] Nema23 2 Phase 4-Leads 18.9Kgcm 76mm CNC Stepper Motor (Shaft Diameter 8mm)](http://www.sainsmart.com/cdn/shop/products/01_595_f5745021-4b6e-4a3d-9970-2febe2e6dd9a.jpg?v=1532427150&width=1445)
![[Discontinued] Nema23 2 Phase 4-Leads 18.9Kgcm 76mm CNC Stepper Motor (Shaft Diameter 8mm)](http://www.sainsmart.com/cdn/shop/products/02_595_f09734c3-fb9c-482a-b0cc-bc6f3f30cf58.jpg?v=1532427150&width=1445)
![[Discontinued] Nema23 2 Phase 4-Leads 18.9Kgcm 76mm CNC Stepper Motor (Shaft Diameter 8mm)](http://www.sainsmart.com/cdn/shop/products/03_595_1d07d912-d71c-40f5-a1e1-bdfad55673a0.jpg?v=1532427150&width=1445)
ELECTRICAL SPECIFICATION:
Manufacturer Part Number: JK57HS76-2804-14Motor Type: 2 phase 4-Leads stepper motor
Step Angle: 1.8 deg.
Holding Torque: 1.89Nm( 267.7oz.in)
Rated Current/phase: 2.8A
Phase Resistance: 1.1ohms
Inductance: 3.6mH+/-20%(1KHz)
PHYSICAL SPECIFICATION
Frame Size: 57 x 57mm
Body Length: 76mm
Shaft Diameter: 8.0mm
Shaft Length: 21mm
D-cut Length: 15mm
Number of Leads: 4
Lead Length: 300mm
Weight: 1.0kg
WARNING
Make sure the motor connect to a constant current orchopper drive controller before you test motor.
Connecting the motor directly to a power supply
will destroy the motor.