GSW 70 A ∅ 70 mm, strain wave gearheads Zero backlash
M 5:2
Stock program Standard program Special program (on request)
Part numbers
889224 889723 889738 50:1 80:1 100:1 24.0 33.0 34.0 39.0 51.0 57.0 69.0 89.0 95.0 3500 3500 3500 6500 6500 6500 75 75 75 473 473 473 153 148 146 29.2 29.2 29.2 1 1 1 0.15 0.15 0.15 2 1 1 1.1 1.3 1.3 1.3 1.7 1.7 2.0 2.5 2.5 7.0 7.0 7.0 25.0 25.0 25.0 73.0 48.0 43.0 5.2 5.7 6.0 150 245 180 560 560 560
Gearhead data (provisional) 1 Reduction 2 Max. continuous torque 3 Max. intermittent torque 4 Max. overload torque 5 Max. continuous input speed Max. intermittent input speed 6 Max. efficiency 7 Weight 8 Mass moment of inertia 9 Gearhead length L1 1 10 Mech. positioning accuracy 11 Mech. repeatability 12 Hysteresis loss 13 Torsional rigidity C1
Nm Nm Nm rpm rpm
% g
gcm2 mm
arcmin arcmin arcmin
104 Nm/rad 104 Nm/rad 104 Nm/rad
Torsional rigidity C2 Torsional rigidity C3
14 Torque M1 Torque M2
Nm Nm Nm mNm
15 Starting torque, no load 16 Backdriving torque, no load 17 Ratcheting torque 18 Buckling torque
Nm Nm
Technical data 19 Bearing at output 20 Tilting rigidity 21 Max. tilting torque 22 Max. radial load 23 Max. axial load 24 Dynamic load rating
Modular system
cross roller bearings BLDC Motors
25.7 Nm/arcmin 207–208_EC-i 52 57 Nm 229–231_EC 60 flat 2345 N232–234_EC 90 flat 4700 N 2110 N 2790 N 109–111_IDX 56 IE 10 mm 119–121_IDX 56 49.7 mm -40…+100 °C Servo Motors
25 Static load rating 26 Distance rolling bearing center to output 27 Pitch diameter 28 Ambient temperature Additional information Explanation of the line numbers and additional information on page 358.
¹This length may vary depending on the configuration and choice of motor. The effective length is calculated at the end of the configuration process.
maxon 395
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