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Right-angle helical gear reducers can be widely used in various industries for equipment requiring speed reduction.
Inline helical gear reducer
Inline helical gear reducer, 130 mm flange; inline helical gear reducer gearbox; inline helical gear gearbox; motor‑driven inline gear reducer; compact inline gear reducer; inline gear box reducer; inline gear box.
The R-series helical gear reducers feature a compact footprint, lightweight construction, high load capacity, excellent efficiency, long service life, easy installation, a wide range of motor power ratings, and finely stepped gear ratios, making them suitable for a broad array of applications across various industries that require speed reduction. For all high-torque applications, in-line helical gearmotors and in-line gearboxes are available with single-stage, two-stage, and three-stage reductions.
Power range: 0.12–200 kW
Transmission ratio range: 1.3–33,000
Output torque (kN·m): up to 50
Product Range: Varitron helical gear reduction motors offer comprehensive drive solutions. High-efficiency, helical gears, in-line configurations, motorized units, AC-powered, with foot-mounted designs.
(1) High-power gear reducer equivalent to SEW’s
(2) Includes low-power gear reducers for both three-phase and single-phase applications.

Inline helical gear reducer inline helical gear reducer
1. The R-series helical gear reducer features a well‑thought‑out design and a compact structure; under the same allowable torque, its overall footprint is smaller than that of X‑ or B‑series harmonic drive reducers.
2. Low vibration, low noise, and high transmission efficiency.
3. The products are primarily used in the chemical machinery, cement mixing machinery, printing and packaging machinery, mining and power transmission and transformation machinery, and metallurgical industries.
The R-series helical gear reducer, designed in accordance with international technical standards, boasts advanced technology, space‑saving dimensions, and exceptional reliability and durability. It can handle overload conditions, delivering up to 132 kW of power while maintaining low energy consumption and superior performance. Its efficiency exceeds 95%, with minimal vibration and noise, ensuring excellent energy‑saving results. Constructed from high‑quality forged steel and featuring a steel‑cast iron housing, the gears undergo carburizing and quenching for enhanced surface hardness, followed by precision machining to ensure shaft balance and meet stringent bearing‑alignment requirements. The unit is assembled as a complete rotating gear set, seamlessly integrating with various electric motors to form an electromechanical system, thereby fully guaranteeing product quality.

Inline helical gear reducer inline helical gear reducer
This series of compact, heavy-duty, in-line helical gear reducers is available in single‑stage, two‑stage, and three‑stage configurations. A wide range of models features input flanges with solid input shafts and motor couplings, including LHF, LVF, MHF, MVF, RXHF, LHD, LVD, MHD variants. We offer high‑precision in‑line gear reducers that deliver exceptional value. Our helical gear reducers provide reliable power transmission for general‑purpose applications such as water treatment, food packaging machinery, milling equipment, cement plants, and mining conveyors.
Definition of a helical gear reduction motor:
Helical gear reducers are a cutting-edge type of gearbox that incorporates an advanced design philosophy based on optimization and modular integration. They feature a compact footprint, lightweight construction, high torque transmission, smooth startup, and finely stepped gear ratios. Customizable connection options and versatile mounting configurations further enhance their flexibility. Manufactured from high‑quality, high‑strength alloy steel with carburized and quenched surface hardening, these reducers offer exceptional load‑carrying capacity and long‑term durability.
Inline helical gear reducer inline helical gear reducer
Inline helical gear reducer inline helical gear reducer
Helical gear reducers are manufactured in accordance with international technical standards and feature a high level of technological sophistication.
2. Space-saving, reliable and durable, with a high overload capacity and power ratings up to 132 kW;
3. Low energy consumption, superior performance, with a gearbox efficiency of 95% or higher.
Low vibration, low noise, and high energy efficiency;
5. High-quality forged steel is used, with a cast-iron housing; the gear surfaces undergo high-frequency heat treatment.
The reducer that constitutes the helical gear transmission assembly is precision‑machined to ensure shaft parallelism and meet the requirements of the locating bearings. When paired with various types of motors, it forms an electromechanical integration system, thereby fully guaranteeing the product’s quality characteristics.
Inline helical gear reducer inline helical gear reducer
Technical Data for R-Series Gear Reducers
Helical gearboxes can be modularly combined with other reducers and gearboxes to achieve high reduction ratios and variable transmission ratios, making them widely used in industries such as metallurgy and mining, lifting and material handling, petrochemicals, textiles, environmental protection, optoelectronics, plastics machinery, and parking equipment.
Hard-tooth-surface helical gear reducer (fully ground gears)
Product Description:
This series of helical gear reducers is designed and manufactured using a modular, combinational system, offering a wide range of motor‑mounting configurations, installation options, and structural solutions. With finely stepped transmission ratios, it meets the demands of diverse operating conditions, achieving electromechanical integration, high transmission efficiency, low energy consumption, and superior performance. The hardened‑tooth‑surface gears are made from high‑quality alloy steel, with carburized and quenched surfaces and precision ground teeth, ensuring smooth operation, low noise, and high load‑carrying capacity. They also feature low temperature rise and long service life, making them widely applicable in industries such as metallurgy, wastewater treatment, chemical processing, and pharmaceuticals.
Inline helical gear reducer inline helical gear reducer inline helical gear reducer
3: Advantages
Suitable for high power
Long-life design
R37–R167 compact optional models
Reducer for RM-series mixing equipment
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