Description
R Series Helical Gearbox: Alternative for SEW R Series Applications
In the modern industrial landscape, reliability and interchangeability are the cornerstones of successful power transmission. As a specialized gearbox manufacturer, we introduce the TR Series Helical Gearmotor—a new generation of mechanic-electrical integrated products designed as a high-performance, modular alternative to the SEW R Series.
Whether you are looking to optimize your supply chain or seeking a durable gear drive for a new project, our R series helical gearbox offers good solutions.


Technical Specifications: Modular Excellence
The TR Series is built upon a sophisticated modular system, allowing for massive flexibility in configuration. We offer twelve distinct specifications, ensuring that from small-scale automation to heavy-duty metallurgy, there is a model perfectly sized for your requirements.
1. Transmission Stages
To meet diverse speed and torque demands, our units are available in:
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1-Stage Transmissions: For high-speed applications requiring minimal reduction.
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2-Stage Transmissions: The industrial standard for balanced speed and torque.
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3-Stage Transmissions: Designed for maximum torque multiplication and low-speed output.
2. Unmatched Performance Range
Our technical parameters are engineered to compete with the best in the global market:
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Power Range: 0.12 kW to 160 kW.
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Maximum Torque: Up to 18,000 Nm.
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Speed Ratio Range: From 1.3 to 27,001 (when combined with TRF series).
Reliability & Manufacturing Precision
For B2B buyers, the “Total Cost of Ownership” is defined by durability. Our R series helical gearbox is manufactured to the highest tolerances to ensure “install-and-forget” reliability.
High-Precision Housing
Except for the ultra-lightweight TR..28 (which utilizes a high-grade aluminum alloy), the entire series features robust cast iron housings.
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One-Piece Machining: All housings are machined in a single setup using horizontal machining centers. This ensures that the shape and position tolerances—critical for gear alignment—are of the highest precision.
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Strong Bearing Capacity: The rigid housing design prevents deformation under heavy radial and axial loads.
Hardened Tooth Surface Technology
The heart of the TR series lies in its gears:
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Material: High-quality alloy steel.
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Process: The gears are surface-hardened (carburized and quenched) and then finished on high-precision gear grinding machines.
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Result: A hardened tooth surface that offers low noise, low vibration, and exceptional wear resistance.
Performance Characteristics: Why Choose the TR Series?
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Compact Space Optimization: The optimized gear geometry means our gearbox takes up less room while delivering more torque than traditional spur gear units.
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Low Energy Dissipation: With high-efficiency helical stages, energy loss is minimized, reducing heat generation and operational costs.
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Universal Motor Connectivity: Our modular interface allows the gearbox to connect with:
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Standard AC motors & Brake motors.
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Explosion-proof motors (for chemical/oil gas environments).
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Frequency conversion & Servo motors (for precision control).
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IEC standard motors.
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Discretionary Mounting: Designed for the “solid space” concept, these units can be mounted in any of the six orientations (B3, B5, V1, etc.) to fit your machine’s layout.
Typical Industrial Applications
The TR Series helical gearmotor is a versatile workhorse, currently serving B2B clients in the following drive fields:
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Textile & Foodstuff: Smooth, low-noise operation for sensitive production lines.
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Chemical & Environment Protection: Reliable sealing and explosion-proof compatibility.
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Logistics & Automatic Storage: High torque for conveyors and automatic arm ladders.
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Metallurgy & Tobacco: Rugged durability for 24/7 heavy industrial duty cycles.
Comparison: TR Series vs. SEW R Series
Our TR series is designed with interchangeable mounting dimensions, making it the ideal alternative for maintenance and replacement of existing SEW R series units. You gain the same high-precision gear grinding and modular flexibility while optimizing your procurement budget.
💡 B2B Procurement Support
Are you looking for a direct cross-reference for your current SEW R Series model?
Contact Our Engineering Team for a 1:1 Comparison or Request the 2D/3D CAD Drawing Library to start your integration today.


