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Step-down Gearbox 110mm Stepper Motor Nema42 Ratio 3 :1 70Nm 3000RPM Speed Reducer Servo Motor Planetary Gearbox Reduction Gear Shipping listing: 1X 110MM NEMA42 Planetary Gearbox Description: Product type: Planetary Gearbox Flange: 110mm Nema42 Speed Ratio: 3:1 Input Shaft: 19mm Output Shaft: 19mm Body length: 105mm Precision: Less than 20 Arcmin Rated Load:90NM Max Load:140NM Efficiency:92% Input speed: 3000prm Max enter speed:5000rpm Gear material: 20Cr Carbon steel Package list: 1x Planetary Gearbox 1x Key 4x Install screws If you would like an output shaft or enter shaft of different sizes, you would take order on this link: For Servo Motor Drawing : For Stepper Motor Drawing : 110PX Nema42 Reducer Technical Parameters Stage Stage 1 Stage 2 Stage 3 Speed Ratio 3/4/5/6/8/10 16/20/24/30/36 56/64/96/144/216 Input (MM) 19 19 19 Output shaft (MM) 19/22 19/22 19/22 Keyway (MM) 6 6 6 Body size For Stepper Motor a hundred and five one hundred thirty 155 Body size For Servo Motor 117 142 167 Rated load (N.M) 70 a hundred and forty one hundred sixty Maximum load (N.M) 100 a hundred and seventy one hundred eighty Full load performance (%) 90 86 80 Backlash Precision (arcmin) ≦20 ≦30 ≦45 Rated enter pace (RPM) ≦3000 ≦3000 ≦3000 Protection point (IP) sixty five 65 65 Noise (dB) ≦60 ≦60 ≦60 Average service lifestyles (H) ≈20000 ≈20000 ≈20000 Gear material 20Cr Carbon metallic 20Cr Carbon steel 20Cr Carbon metal