PLF120-MB Low-Backlash Precision Planetary Gearbox (≤7 arcmin) for 110mm Servo Motor

This PLF120-MB precision planetary gearbox is engineered for 110 mm servo motors, featuring a space-saving inline design with a built-in input coupling that accepts a Φ19 mm motor shaft (max. 57 mm length) and a Φ25 mm keyed output shaft (50mm length). It delivers low-backlash gearing of ≤7 arcmin (single-stage) with reduction ratios from 3:1 to 10:1 (single-stage) or up to 100:1 (two-stage), rated output torque of 86–210 N·m, and transmission efficiency up to 94%–96%. The gearbox handles a rated input speed of 3,500 RPM and loads of 1,500 N radial / 1,200 N axial, operating at ≤55 dB with IP65 protection, lifetime lubrication, a 20,000-hour lifespan, and an ambient temperature range of -20°C to +150°C. Its 120 mm frame, IP65 sealing, and low-backlash precision make it well suited to heavy-duty motion axes in large CNC routers and engraving machines, industrial robotics, automated production lines, packaging machinery, and laser processing equipment requiring reliable torque multiplication and accurate positioning from a 110 mm servo platform.

PLF120-MB General Specification

• Manufacturer Part Number: PLF120-MB
• Product Type: Precision Planetary Gearbox
• Rated Input Speed: 3,500 RPM
• Max. Input Speed: 6,000 RPM
• Max. Radial Load: 1,500 N
• Max. Axial Load: 1,200 N
• Noise: ≤55 dB
• Protection Class: IP65
• Lifespan: 20,000 Hours
• Ambient Temperature: -20° to +150°
• Lubrication Type: Lifetime Lubrication
• Output Shaft Type: Keyway
• Output Shaft Diameter: Φ25 mm
• Output Shaft Length: 50 mm
• Input Shaft Diameter: Φ24 mm
• Input Shaft Length: Max. 57 mm