Package Included : 1X Planetary reducer 1X Key 4X Install screw Reducer parameters: Speed Ratios: 1Stage (L1): 3:1 / 4:1 / 5:1 / 7:1 / 10:1 2Stage (L2): 15:1 / 20:1 / 25:1 / 30:1/ 35:1 / 40:1 / 50:1 / 70:1 / 100:1 Product type: Helical Gear Planetary reducer Input size: 19mm/ 24mm Body length: 131 (L1) / 182 (L2) Backlash Precision: Less than three Arcmin (L1) / Less than 5 Arcmin (L2) Gear type: Helical Gear Rated torque: 290Nm(4:1/ 5:1/ 15:1/ 20:1/ 25:1/ 35:1/ 40:1/ 50:1) ; 270Nm (7:1 / 70:1) ; 220Nm (10:1 / 100:1); 208Nm (3:1/ 30:1); Maximum torque: 2* Rated torque Emergency braking torque: 3* Rated torque Max radial force: 3420N Max axial pressure : 2650N Torsional rigidity: 23Nm/ Arcmin Max input speed: 6000rpm Rated input speed: 3000rpm Transmission efficiency: More than 97% (L1) / More than 94% (L2) Noise: lower than 63dB Working life time: 20000h Protection level: IP65 Certification: CE