SRI Instruments (Qinhuangdao SRI, Yuli) is a leading Chinese six-axis force/torque sensor maker serving robotics, automotive safety, medical and general testing. The patented C25XX–C60XX series is purpose-built for humanoid-robot wrist mounting with low zero drift, high precision, isolated power supply, superior shock resistance and single-side mounting: accuracy better than 0.5% F.S. across the series, zero drift better than 0.1%/10 C on selected models, up to 3x overload with 100-cycle 3x-overload survival per axis. Ranges span Fx/Fy/Fz 50–600 N (extra-thin Fz up to 1000 N) and Mx/My/Mz 5–40 N·m in OD 45–60 mm bodies as thin as 9.2 mm and as light as 0.03 kg, with EtherCAT (IN & OUT), Ethernet TCP/IP, CAN, CAN FD, RS485, RS232 and USB interfaces for humanoid wrist/ankle six-axis perception and joint force control.
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