MHI HASEG Planetary Traction Drive Units TRDF P Series (Single-Stage Type)

The MHI HASEG TRDF P Series (Single-Stage Type) is a high-precision planetary traction drive unit designed for smooth, backlash-free, and energy-efficient power transmission. As part of the TRDF lineup, this single-stage unit incorporates MHI HASEG’s patented rolling contact technology, offering precision motion control in a compact and maintenance-friendly design.

Key Features

• ✅ Single-Stage Precision Roller System
  
  Built with a straightforward roller layout—comprising a sun roller, planetary rollers, and a U-shaped elastic ring—the TRDF P Series (Single-Stage) delivers reliable torque transmission and high speed reduction in a single step.
  
  

• ✅ High Rotational Accuracy
  
  With transmission error as low as 0.05% per revolution, the unit guarantees exceptional positioning performance—well suited for servo-driven automation.
  
  

• ✅ Practically Zero Backlash
  
  The elastic ring precisely controls the preload on each roller, ensuring non-backlash operation, crucial for forward/reverse motion accuracy in robotics and CNC systems.
  
  

• ✅ Low Noise and Vibration
  
  The rolling contact system with oil film lubrication reduces metal-to-metal impact, resulting in ultra-quiet, low-vibration performance, even under dynamic load changes.
  
  

• ✅ High Efficiency and Reliability
  
  Designed to deliver up to 98% mechanical efficiency, the TRDF P Series minimizes energy losses and extends service life through reduced internal wear.
  
  

• ✅ Compact Design with Pre-Filled Lubrication
  
  The TRDF P Series comes pre-filled with lubricating oil, simplifying installation and preventing startup errors, making it ideal for space-constrained systems.
  
  

Technical Overview

• Type: Single-stage planetary traction drive

• Reduction Ratios: i = 5, 6.3, 8, 10, 12.5

• Efficiency: Up to 98%

• Backlash: Near-zero

• Rotational Precision: ±0.05%

• Lubrication: Pre-filled (S and P Series)

• Mounting: Horizontal or vertical

• Sizes Available: 50, 63, 80, 100

Applications

The TRDF P Series (Single-Stage Type) is ideal for:

• Semiconductor manufacturing and transport systems

• Laser cutting and engraving machines

• High-speed testing and inspection equipment

• XY tables and precision actuators

• Compact medical automation devices

• Photographic and printing machinery
  
  

Model Example

TRDF63H-12.5RZ

• TRDF: Planetary traction drive with pre-filled oil

• 63: Frame size

• H: Single-stage P Series

• 12.5: Reduction ratio

• R: Horizontal mounting

• Z: Standard
  
  

Why Choose TRDF P Series (Single-Stage Type)?

•  Ideal for space-limited, high-accuracy systems

•  Quiet, vibration-free operation for sensitive environments

•  Perfect for servo applications requiring zero backlash

•  Pre-filled oil and compact structure reduce setup time

•  Durable, high-efficiency transmission in a small footprint

MHI HASEG Planetary Traction Drive Units: TRDF P Series（Single-Stage Type）