85mm Hollow Rotary Actuator Platform Gear Ratio 5:1 Backlash 3arc-min for Nema 23 Stepper Motor

This hollow rotary actuator platform fits for standard Nema 23 stepper motors. It features a gear ratio of 5:1, permissible torque of 12.00Nm(1699.34oz.in), 3arcmin positioning accuracy and 15arcsec repeated positioning accuracy.
Its crossed roller bearing ensures high precision, stable torque, and strong load capacity. The 360-degree hollow design allows precise positioning at any angle, compatible with stepper or servo motors. Ideal for automation, glue dispensing, packaging, inspection, laser printing, sorting, and robotics.

Physical Specifications

• Manufacturer Part Number: HRP85KH-G5-D8
• Gear Ratio: 5:1
• Efficiency: 95%
• Position Accuracy: 3arcmin
• Repeated Position Accuracy: ±15arcsec
• Permissible Torque: 12.00Nm(1699.34oz.in)
• Allowable Moment of Inertia: 8.00Nm(1132.89oz.in)
• Moment of inertia: 12593g·cm²
• Maximum Axial Load: 500N
• Recommended Axial Load: 120N
• Permissible Output Speed: 300rpm
• Platform Parallelism: ≤0.010mm
• Platform Jumping: ≤0.010mm
• Noise: <=65dB
• Waterproof Rating: IP40
• Lifetime: 20000hours
• Lubrication Method: Lubricating Grease
• Platform Frame Size: 85 x 85mm
• Mounting Flange Size: 60 x 60mm
• Input Shaft Diameter: Φ8mm
• Maximum Input Shaft Length: 32mm
• Diameter of Hollow Section: 33mm
• Platform Height: 74.2mm