Feetech SM-85CL 12V 85kg.cm RS485 Serial Bus Servo

The Feetech SM-85CL is a heavy-duty 12 V RS485 serial bus servo with an all-aluminium alloy shell, coreless motor and steel gearbox. With 85 kg.cm of stall torque it handles shoulder and base joints on larger robotic arms, legged robots and industrial mechanisms.

Key features

• 85 kg.cm peak stall and 28 kg.cm rated torque at 12 V, drawing 3.2 A at stall

• 12-bit magnetic encoder for any-angle 0–360° control and multi-turn continuous operation

• Feedback of position, speed, voltage, current, temperature and load

• 0.27 s/60° (37 RPM) no-load speed

• 15T 7.6 mm output spline on two ball bearings

Specifications

• Operating voltage: 12 V

• Stall torque: 85 kg.cm at 12 V

• Rated torque: 28 kg.cm at 12 V

• Stall current: 3.2 A at 12 V

• No-load current: 200 mA

• No-load speed: 0.27 s/60° (37 RPM) at 12 V

• Position range: 360° (0–4095)

• Control: RS485 bus, half-duplex asynchronous serial

• Motor: coreless

• Horn spline: 15T, 7.6 mm

• Dimensions: 62 × 34 × 47 mm

• Lead length: 150 mm

• Weight: 215 g

• Operating temperature: -15 to 70 °C

The 15T spline differs from the 25T spline on standard-size servos, so use horns and brackets made for this size. Control needs an RS485 servo controller or USB-RS485 adapter.