MG Series Planetary Gearbox Gear Ratio 20:1 Backlash 30arc-min for Nema 17 Stepper Motor

The size of this gearbox is 42 x 42mm and the input shaft diameter is 5mm. This high-precision planetary gearbox is belong to MG series gearbox, it with gear ratio 20:1 and a maximum 50arc-min backlash. Diffent with the EG series' steel gears, MG series' gears are made of powder metallurgy. It's an excellent choice for applications that require good accuracy but low cost.
This inline planetary gearbox built-in an input shaft coupling which can match standard 5mm short shaft Nema 17 stepper motor, brushless dc motor and brushed dc motor.
One of matchable motor is 17HS15-1584S, for other motors, please contact our technical support to custom the motor shaft.

Gearbox Specifications

• Part Number: MG17-G20
• Gearbox Type: Spur Planetary
• Gear Material: Powder Metallurgy
• Gear Ratio: 20:1
• Efficiency: 80%
• Rotor Inertia: 0.03kg·cm²
• Backlash at No-load: <=50arcmin
• Max.Permissible Torque: 10Nm(88.51lb-in)
• Noise: <=55dB(1000rpm)/65dB(3000rpm)
• Waterproof Rating: IP54
• Lifetime: 20000hours

Physical Specifications

• Frame Size: 42 x 42mm
• Gearbox Length: 51mm
• Output Shaft Type: Key way
• Output Shaft Diameter: Φ8mm
• Output Shaft Length: 21.5mm
• Input Shaft Diameter: Φ5mm
• Input Shaft Length: 6.5-10.5mm