HPS42-MB Precision Planetary Gearbox ≤15 arcmin for 40mm Servo Motor

This HPS42-MB precision planetary gearbox is engineered for 40 mm servo motors, featuring a space-saving inline design with a built-in input coupling that accepts a Φ8 mm motor shaft (max. 25 mm length). Its helical gearing delivers exceptionally low backlash of ≤15 arcmin (single-stage) or ≤20 arcmin (two-stage), with reduction ratios from 4:1 to 100:1, rated output torque of 5–12 N·m, and transmission efficiency of 96% (single-stage) or 94% (two-stage). The gearbox handles a rated input speed of 3,000 RPM (max. 6,000 RPM) and loads of 300 N radial / 100 N axial, operating at ≤55 dB with IP54 protection, lifetime lubrication, a 20,000-hour lifespan, and an ambient temperature range of -20°C to +150°C. Its Φ10 mm keyed output shaft and helical low-backlash design make it well suited to high-precision motion axes in CNC machining centers, industrial robotics, automated production lines, packaging machinery, and semiconductor handling equipment where smooth, quiet operation and accurate torque multiplication from a 40 mm servo platform are essential.

WAB90 General Specification

• Manufacturer Part Number: HPS42-MB
• Product Type: Planetary Gearbox
• Rated Input Speed: 3,000 RPM
• Max. Input Speed: 6,000 RPM
• Max. Radial Load: 300 N
• Max. Axial Load: 100 N
• Noise: ≤55 dB
• Protection Class: IP54
• Lifespan: 20,000 Hours
• Ambient Temperature: -40° to +150°
• Lubrication Type: Lifetime Lubrication
• Output Shaft Type: Keyway
• Output Shaft Diameter: Φ10 mm
• Output Shaft Length: 25 mm
• Input Shaft Diameter: Φ8 mm
• Input Shaft Length: Max. 25 mm