This is a pack of five Twotrees 17HS4401 NEMA 17 stepper motors (also marked 42BYGH). Each is a 4-lead, 2-phase hybrid motor with a 1.8° step angle and a rated current of 1.5 A per phase. DuPont lines are included for connecting them to 3D printers and CNC machines.
The motor has a reinforced PCB inside and a stator built so the teeth are ground evenly and cleanly. The rotor surface is coated with epoxy resin that seals the rotor and is cured at high temperature. After the rotor is machined, metal residue such as iron pins is not likely to collect in the tooth grooves.
The motor turns at a steady speed with low noise and without losing steps. It is suited to printer designs such as Kossel, Prusa I3, Ultimaker and CoreXY.
- Model
- 17HS4401 (NEMA 17, 42BYGH)
- Quantity
- 5 motors
- Type
- Hybrid stepper motor, 4-lead
- Phases
- 2
- Step angle
- 1.8° ± 0.09°
- Voltage
- 12V-24V
- Rated voltage
- DC 3.6V
- Rated current
- DC 1.5A per phase
- Phase resistance
- 2.4 Ω per phase ±15% (at 20°C)
- Phase inductance
- 3.7 mH per phase ±20%
- Holding torque
- ≥420 mN.m (65 oz.in)
- Positioning torque
- 15 mN.m REF.
- Rotation direction
- A-C B-D clockwise
- Max starting rate
- ≥1500 PPS
- Max slewing rate
- ≥1900 PPS
- Electrical strength
- AC600V/1mA/1S
- Insulation resistance
- ≥100 MΩ (DC 500V)
- Insulation class
- B
- Certifications
- RoHS, CE
- Origin
- Mainland China
- Compatibility
- 3D printers and CNC, including Kossel, Prusa I3, Ultimaker, CoreXY
- In the box
- 5 stepper motors with DuPont lines