Genaral Specification of 42mm planetary reducer stepper motor:
- Frame Size: 42 x 42mm
- Motor Length: 48mm
- Gearbox Length: 35mm
- Shaft Diameter: Φ8mm
- Shaft Length: 20mm
- D-cut Length: 15mm
- Number of Leads: 4
- Lead Length: 300mm
- Weight: 340g
Gearbox Specifications of Nema17 planetary reducer stepper motor:
- Gearbox Type: Planetary
- Gear Ratio: 26.8: 1
- Efficiency: 81%
- Backlash at No-load: <=1 deg
- Max.Permissible Torque: 3Nm(425oz.in)
- Moment Permissible Torque: 5Nm(708oz.in)
- Shaft Maximum Axial Load: 50N
- Shaft Maximum Radial Load: 100N
Nema17 Hybrid Stepping Motor Specifications :
| Model No. | Step Angle | Motor Length | Current /Phase | Resistance /Phase | Inductance /Phase | Holding Torque | # of Leads | Detent Torque | Rotor Inertia | Mass |
| ( °) | (L)mm | A | Ω | mH | kg.cm | No. | g.cm | g.cm | Kg |
| JK42HS48-1204 | 1.8 | 48 | 1.2 | 4.8 | 8.5 | 5.5 | 4 | 260 | 68 | 0.35 |
Specifications of gearbox reducer :
| Reduction ratio | 26.8 |
| Number of gear trains | 2 |
| Length(L2) mm | 35 |
| Max.rated torque kg.cm | 30 |
| Short time permissible torque kg.cm | 60 |
| Weight g | 450 |
Details of Nema 17 Geared Stepper Motors :
Advantages of Stepper Motors:
- Low cost for control achieved
- High torque at startup and low speeds
- Ruggedness
- Simplicity of construction
- Can operate in an open loop control system
- Low maintenance
- Less likely to stall or slip
- Will work in any environment
- Can be used in robotics in a wide scale.
- High reliability
- The rotation angle of the motor is proportional to the input pulse.
- The motor has full torque at standstill (if the windings are energized)
- Precise positioning and repeatability of movement since good stepper motors have an accuracy of 3–5% of a step and this error is non-cumulative from one step to the next.
Nema17 Stepping Motor Applications:
Computer controlled stepper motors are a type of motion-control positioning system. They are typically digitally controlled as part of an open loop system for use in holding or positioning applications.
In the field of lasers and optics they are frequently used in precision positioning equipment such as linear actuators, linear stages, rotation stages, goniometers, and mirror mounts. Other uses are in packaging machinery, and positioning of valve pilot stages for fluid control systems.
Commercially, stepper motors are used in floppy disk drives, flatbed scanners, computer printers, plotters, image scanners, compact disc drives, intelligent lighting, camera lenses, CNC machines and, more recently, in 3D printers.
