Kaiserdrive KGU-20B Harmonic Integrated Joint Module (56 N·m rated)
Jiangsu Kaiserdrive (subsidiary of Leaderdrive Harmonic Drive, STAR-688017) KGU robot joint module, model KGU-20B: 56 N·m rated / 105 N·m max torque, 37/50 rpm rated/max speed, 210 W rated power, 48VDC, ratio 1/81. Integrated harmonic reducer + frameless torque motor + built-in EtherCAT/CANopen servo driver + dual 20-bit single-turn absolute encoders (BiSS-C), 50 arcsec positioning / 10 arcsec repeatability, Φ14mm hollow shaft, Φ90×89mm envelope, only 1.67kg, optional power-off holding brake. For lightweight humanoid-arm joints (payload/weight ratio near 1:1); smallest joint under 350g.
Joint modulesIntegrated jointsKaiserdriveLeaderdriveHumanoid robot joints