Kaiserdrive KGU-08B Harmonic Integrated Joint Module (6 N·m rated)
Vendor: 开璇智能 Kaiserdrive
Product: KGU-08B
Jiangsu Kaiserdrive (subsidiary of Leaderdrive Harmonic Drive, STAR-688017) KGU robot joint module, model KGU-08B: 6 N·m rated / 12 N·m max torque, 43/68 rpm rated/max speed, 30 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), 69 arcsec positioning / 15 arcsec repeatability, Φ6.5mm hollow shaft, Φ52×56mm envelope, only 0.35kg, optional power-off holding brake. For lightweight humanoid-arm joints (payload/weight ratio near 1:1); smallest joint under 350g.
| bus | EtherCAT（默认）/ CANopen（可选） |
| brake | 可选掉电保持制动器 |
| model | KGU-08B |
| weight | 0.35 kg |
| encoder | 双 20bit 单圈绝对值编码器（BiSS-C） |
| reducer | 谐波减速（速比 1/81） |
| voltage | 48VDC（可选 24VDC） |
| backlash | 零背隙（谐波传动） |
| dimensions | Φ52×56 mm |
| gear_ratio | 1/81 |
| peak_speed | 68 rpm |
| protection | 全闭自冷（F 级绝缘） |
| peak_torque | 12 N·m |
| rated_power | 30 W |
| rated_speed | 43 rpm |
| vendor_site | https://www.kaiserdrive.com |
| hollow_shaft | Φ6.5 mm |
| rated_torque | 6 N·m |
| repeatability | 15 arcsec |
| positioning_accuracy | 69 arcsec |