SFO Series 95W 36VDC Outer-Rotor Frameless Torque Motor 1.8Nm 71mm Frame Diameter

This SFO Series frameless outer-rotor torque motor features a 36VDC voltage, 95W rated power, 500RPM rated speed and 1.8Nm rated torque. With a frameless outer-rotor design and no traditional housing, shaft, bearings, or end covers, the motor can be directly integrated into mechanical structures for a more compact and lightweight system. Designed for high acceleration, frequent start-stop operation, and space-constrained applications, it is ideal for robots, aerospace equipment, precision machinery, medical devices, and other high-end automation systems.

Key Features

• Low cogging torque for smooth operation
• High dynamic response with excellent heat dissipation
• Built-in thermistor for real-time motor temperature monitoring
• Large inner through-bore design, compatible with encoders, cables, hoses, and more
• Standardized dimensions optimized to match mainstream harmonic reducers on the market

Electrical Specification

• Part Number: 61SFO25-3610-180B
• Voltage: 36VDC
• Rated Power: 95W
• Number of Poles: 28
• Rated Torque: 1.8Nm
• Maximum Instantaneous Torque: 3.6Nm
• Rated Speed: 500RPM
• Maximum Speed: 720RPM
• Rated Current: 7.4±5%A
• Maximum Instantaneous Current: 14.8±5%A
• Torque Constant: 0.24Nm/A
• Back EMF Constant: 15.3V/krpm
• Insulation Class: F
• Ambient Temperature: -20~40℃

Physical Specification

• Outer Diameter: 71mm
• Rotor Inner Diameter: 35.5mm
• Total Height: 33mm