MHI HASEG Planetary Roller Reducer TSDB125H-4.5RX
High Precision. High Torque. Zero Backlash.
The MHI HASEG TSDB125H-4.5RX is a heavy-duty planetary roller reducer developed as part of the TS Series—a high-torque, zero-backlash solution designed for smooth, stable rotation and long-term precision. With an actual reduction ratio of 4.48:1, this model is ideal for use in industrial automation systems requiring precise torque transmission, low speed variation, and high mechanical rigidity.
Key Features of TSDB125H-4.5RX
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✅ High Torque Output:
Rated at 1,300 Nm, with a maximum instantaneous torque of 1,950 Nm, it delivers powerful, reliable motion control.
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✅ High Rigidity & Stability:
Offers 50% higher torsional stiffness compared to conventional models, ensuring steady performance even with sudden load changes.
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✅ Zero Backlash:
Enables high-precision drive control with minimal play, ideal for precision positioning systems and servo applications.
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✅ Smooth & Quiet Operation:
Internal components are optimized for vibration reduction and rotational smoothness—even during prolonged usage.
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✅ Compact & Retrofit-Friendly:
The TSDB125H-4.5RX matches legacy dimensions for easy replacement without re-engineering existing systems.
Technical Specifications of TSDB125H-4.5RX
Specification
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TSDB125H-4.5RX
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| Frame Size |
125 |
| Nominal Reduction Ratio |
4.5:1 (Actual 4.48:1) |
| Rated Output Torque |
1,300 Nm |
| Max Instantaneous Torque |
1,950 Nm |
| Max Input Speed |
2,000 min⁻¹ |
| Permissible Radial Load |
960 N |
| Torsional Speed Variation |
≤ 0.07% |
| Backlash |
≤ 12 arcseconds |
| Number of Stages |
1-stage |
| Lubrication |
SANTOLUBES TDF ISO VG100/150 |
| Dry Weight |
Approx. 280 kg |
| Oil Volume (Initial Fill) |
Approx. 6 liters |
| Output Shaft |
φ70h6 × 130 mm (M20, depth 39 mm) |
| Input Shaft |
φ50h6 × 65 mm (M16, depth 32 mm) |
Applications of TSDB125H-4.5RX
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Servo motor-driven presses
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Film and packaging equipment
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High-speed positioning units
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Robotics and automation cells
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Coaxial high-rigidity transmission lines
Summary
The TSDB125H-4.5RX from MHI HASEG is a compact, high-performance planetary roller reducer built for extreme torque, zero backlash, and smooth, long-term operation. Its rugged build, high precision, and compatibility with existing installations make it a top choice for servo-driven applications, robotics, and industrial automation requiring consistent and accurate motion control.
For more information or to request a quote, please contact Melink Automation—your trusted dealer of MHI HASEG products.
