HHD Series Harmonic Drive Gearbox Φ70mm Ratio 50:1 Backlash 20arcsec 8mm Input Diameter

This harmonic gearbox has a gear ratio of 50, a frame size of Φ70mm and an input shaft diameter of 8mm and a maximum backlash of 20arcsec.
The HHD series harmonic gearboxes use an ultra-thin hollow flange structure flexspline, the axial length is shortened by about 50% without changing the product performance. The output side is equipped with a high-rigidity crossed roller bearing.
Characterized by an ultra-flat design, lightweight, and compactness, this series is widely used in humanoid robots, metal machine tools, medical equipment, communication equipment, etc.

Key Feartures

• Coaxial Input and Output
• High torque capacity and high rigidity
• Excellent positioning accuracy and rotation accuracy
• Compact and simple structure design with low to zero backlash, directly connected to the motor and easy to install
• Ultra-thin hollow flange structure, with high-rigidity crossed roller bearings assembled on the output side

Gearbox Specifications

• Part Number: HHD-14-50-I-D8
• Gearbox Type: Harmonic Gearbox
• Gear Material: Alloy Steel
• Gear Ratio: 50:1
• Backlash at No-load: <=20arcsec
• Rated Torque(Input Speed 2000rpm): 3.70Nm(523.96oz.in)
• Moment Permissible Torque: 23.00Nm(3257.07oz.in)
• Peak Start-stop Torque: 12.00Nm(1699.34oz.in)
• Maximum Input Speed Allowed: 8500rpm
• Average Input Speed Allowed: 3500rpm
• Lifetime: 9000hours

Physical Specifications

• Frame Size: Φ70mm
• Gearbox Length: 17.5mm
• Input Shaft Type: Keyway
• Input Shaft Diameter: Φ8mm

Operating Environment(Tj = 25℃/77℉)

• Amient temperature: 0-40℃
• No splashing of water or oil
• Do not expose to corrosive or explosive gas
• No dust such as metal powder