NEMA 8 Bipolar, 200 Steps, 20×30mm, 3.9V Stepper Motor - PL-1204
SY20STH30-0604A small hybrid bipolar stepper motor with 1.8° step angle ( 200 steps/rev). Each phase draws 600 mA at 3.9 V, allowing a holding torque of 180 g-cm (2.5 oz-in). The motor has four color-coded wires terminated with bare ends: black and green connect to a coil; red and blue are connected together. These leads are connected to the stepper motor via a removable JST-ZHR-5 connector. The motor can be controlled with a pair of suitable H-bridges (one for each coil), but bipolar
stepper motor driver.
Technical Specifications
- Dimension: 20 mm square × 30 mm, not including spindle (NEMA 8)
- Weight: 60 g (2 oz)
- Shaft diameter: 4 mm “D”
- Per revolution step: 200
- Current rating: 600 mA per coil
- Voltage rating: 3.9 V
- Resistance: 6.5 Ω per coil
- Holding torque: 180 g-cm (2.5 oz-in)
- Inductance: 1.7 mH per coil
- Output shaft supported by two ball bearings
Dimensions
The diagram below shows the stepper motor dimensions in mm. Its length is 30 mm. The output D-shaft is 6.5 mm long and 4 mm in diameter. This shaft has a flattened section of 5 mm. Can be used with rel="noopener noreferrer">4mm Motor Connection Bracket.
Stepper Motor Applications
Stepper motors are often used in a variety of applications where precise position control is desired and the cost or complexity of a feedback control system is not warranted. A few applications where stepper motors are often found:
- Printers
- CNC machines
- 3D printer / prototyping machines
- Laser cutters
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- Pick and place machines
- Linear actuators
- Hard disks
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