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High Torque. Zero Backlash. Long-Term Precision.
The MHI HASEG TSDB125H-RX Series planetary roller reducer is a high-performance drive solution designed for applications that demand precise torque control, exceptional rigidity, and smooth, maintenance-free operation. As part of MHI HASEG's advanced TS Series, the TSDB125H-RX Series delivers enhanced performance through proprietary zero-backlash technology and a compact, high-torque planetary roller structure.
| Reduction Stage |
Gear Ratio: 4.5~500 |
Model（Size：125） |
| 1 |
4.5 |
TSDB125H-4.5RX |
| 6.3 |
TSDB125H-6.3RX |
| 8 |
TSDB125H-8RX |
| 10 |
TSDB125H-10RX |
| 12.5 |
TSDB125H-12.5RX |
| 2 |
20 |
TSDB125H-20RX |
| 30 |
TSDB125H-30RX |
| 40 |
TSDB125H-40RX |
| 50 |
TSDB125H-50RX |
| 63 |
TSDB125H-63RX |
| 3 |
90 |
TSDB125H-90RX |
| 125 |
TSDB125H-125RX |
| 250 |
TSDB125H-250RX |
| 320 |
TSDB125H-320RX |
| 500 |
TSDB125H-500RX |
Key Features
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✅ High Torque Capacity:
Delivers up to 1,650 Nm of rated output torque, withstanding instantaneous peaks up to 2,475 Nm, making it suitable for heavy-duty industrial loads.
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✅ Zero Backlash Performance:
Engineered for precision control and accurate positioning, with virtually no play in the output shaft.
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✅ Exceptional Torsional Rigidity:
Reinforced internal components offer 50% higher torsional stiffness than conventional gear reducers.
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✅ Smooth & Stable Rotation:
Maintains consistent motion even under variable loads, thanks to reduced angular speed fluctuation and optimized roller alignment.
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✅ Wide Reduction Ratio Range:
Available in 15 gear ratios from 4.5:1 to 500:1, allowing flexible configuration for different system requirements.
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✅ Easy Retrofitting:
Shares the same center height as legacy models, simplifying upgrades without the need for structural redesign.
Model Example: TSDB125H-4.5RX
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Specification
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Details
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| Reduction Ratio |
4.5:1 (actual: 4.48:1) |
| Rated Output Torque |
1,300–1,650 Nm (depending on ratio) |
| Instantaneous Max Torque |
1,950–2,475 Nm |
| Max Input Speed |
2,000 min⁻¹ |
| Permissible Radial Load |
960 N |
| Backlash |
≤ 12 arcseconds |
| Torsional Variation |
≤ 0.07% |
| Dry Weight |
Approx. 280 kg |
| Oil Volume |
Approx. 6 liters |
| Lubrication |
SANTOLUBES TDF ISO VG100/150 |
| Stages |
1 to 3-stage configurations available |
Ideal Applications
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Servo-driven presses and actuators
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Robotics and precision motion control
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Film processing, winding, and packaging systems
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Conveyor systems with high load demands
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Automation requiring coaxial, high-rigidity drive systems
Why Choose the TSDB125H-RX Series?
The TSDB125H-RX Series is not just a gearbox—it's a precision transmission system built to support your equipment's most demanding motion control needs. With zero backlash, high torque output, and long-term reliability, it helps improve productivity, reduce maintenance, and ensure stable operation in a wide range of industrial settings.
To learn more or request a quotation, please contact Melink Automation—your trusted dealer for MHI HASEG planetary roller reducers.
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