R/S/K/F Series Helical Gear Reducer, Gear Reduction Motor, Horizontal/Vertical Mounting, High Efficiency Low Noise Industrial Transmission Equipment

The R/S/K/F series reducer (also known as gear reducer, reduction motor) is a transmission reduction device widely used in the industrial field. It adopts a modular, hard-tooth surface gear design and is made of high-quality alloy steel through carburizing, quenching, and grinding. It has the characteristics of high precision, high efficiency, high load-bearing, low noise, and long life. The product is divided into horizontal, vertical, flange and other installation methods. It is suitable for four mainstream structures: R series helical gears, S series helical gears-worm gears, K series spiral bevel gears, and F series parallel axis helical gears. The rated power is 0.12kW-160kW. , speed ratio 1.3-400, can be directly connected with servo motors, stepper motors, and ordinary motors. It is widely used in mechanical transmission systems such as lifting, transportation, packaging, metallurgy, chemical industry, building materials, light industry, etc. It is a core industrial component that achieves deceleration, increased torque, and precise transmission.

 

Key Advantages 

- High Efficiency & Energy Saving: The gear accuracy reaches ISO level 6, the hard tooth surface has strong load-bearing capacity, the single-stage efficiency is 95%-98%, and the multi-stage efficiency is 92%-95%. It saves 15%-30% energy than the soft tooth surface reducer, and the operation is smooth and impact-free.

- Low Noise & Long Life: Gear grinding and finishing, precision assembly, optimized tooth profile design, operating noise 55-72dB(A); bearings and oil seals are imported brands, with a service life of 5-10 years under normal working conditions.

- Compact Structure: Modular, integrated design, 30%-50% smaller than traditional reducers, saving installation space, suitable for small equipment and precision machinery.

- Multiple Models & Installation: R/S/K/F four series, horizontal/vertical/flange/torque arm installation, can be installed at any angle of 360°, suitable for various equipment and working conditions.

- Strong Adaptability: Can be directly connected to ordinary motors, servo motors, variable frequency motors, and explosion-proof motors; supports dual axes, dual inputs, and multi-speed ratio combinations to meet non-standard customization needs.

- Easy Maintenance: Fully enclosed oil-immersed lubrication, reliable sealing, no oil leakage; few wearing parts, long maintenance cycle, only regular oil changes are required daily, and maintenance costs are low.

 

Main Structure 

- Gear & Shaft: 20CrMnTi/42CrMo alloy steel, carburizing and quenching HRC58-62, grinding gear finishing, high tooth surface hardness, wear resistance and impact resistance.

- Housing: HT200/HT250 high-strength cast iron, with good rigidity, strong shock absorption, and no deformation. The surface is spray-painted to prevent rust, making it beautiful and durable.

- Bearing: NSK/SKF imported bearings, with high precision, low noise, strong load-bearing capacity and long life, ensuring long-term stable operation.

- Oil Seal: Imported fluororubber/nitrile rubber oil seal, high temperature resistance, wear resistance, oil leakage prevention, and reliable sealing performance.

- Lubrication System: fully enclosed oil-immersed lubrication, automatically lubrication gears and bearings, no external oil supply required, easy maintenance.

- Input/Output: Input shaft direct-coupled motor, output shaft solid shaft/hollow shaft/spline shaft/flange shaft, multiple connection methods.

 

Parameter	Standard Range	Customizable
Model Series	R, S, K, F Series	Customized Series
Rated Power	0.12kW, 0.25kW, 0.37kW, 0.55kW, 0.75kW, 1.1kW, 1.5kW, 2.2kW, 3kW, 4kW, 5.5kW, 7.5kW, 11kW, 15kW, 18.5kW, 22kW, 30kW, 37kW, 45kW, 55kW, 75kW, 90kW, 110kW, 132kW, 160kW	0.08kW–200kW
Ratio Range	Single Stage: 1.3–12.5; Two Stage: 14–125; Three Stage: 125–400	1.2–500 (Custom Ratio)
Output Torque	10N·m–18,000N·m	5N·m–36,000N·m
Installation Type	Horizontal (B3), Vertical (B5), Flange, Torque Arm	360° Universal Installation
Output Shaft	Solid Shaft, Hollow Shaft (Keyed/Kerf)	Splined Shaft, Flange Shaft, Double Shaft
Efficiency	Single Stage: 95%–98%; Multi Stage: 92%–95%	High Efficiency Customization
Noise Level	55–72 dB(A) (Under Rated Load)	Low Noise ≤55 dB(A)
Protection Grade	IP54, IP55	IP65, IP66 (Waterproof/Dustproof)
Ambient Temperature	-10°C ~ +40°C	-40°C ~ +80°C (Special Type)
Motor Type	AC Motor, Servo Motor, Stepper Motor	Explosion-proof, Variable Frequency, Brake Motor

 

Series Classification 

- R Series (Helical Gear Reducer): Parallel shaft output, high efficiency, large torque, suitable for high speed, high load, continuous operation, used in conveyors, mixers, and fans.

- S Series (Helical-Worm Gear Reducer): Worm gear structure, large speed ratio, low speed, self-locking function, suitable for lifting, elevators, gates, and packaging machines.

- K Series (Bevel Helical Gear Reducer): Right-angle shaft output, 90° steering transmission, compact structure, used for mixers, cranes, and rotating equipment.

- F Series (Parallel Shaft Helical Gear Reducer): Parallel shaft, hollow shaft/solid shaft, flexible installation, used for conveyor belts, textile machinery, and printing equipment.

 

Applications 

- Lifting Machinery: Cranes, winches, lifting platforms, electric hoist transmission systems

- Conveying Equipment: belt conveyor, scraper, screw conveyor, roller conveyor line

- Packaging Machinery: filling machine, sealing machine, labeling machine, packaging machine, wrapping machine

- Food & Beverage: mixers, extruders, conveyors, cleaning equipment

- Metallurgy & Mining: Ball mill, crusher, screener, conveying equipment

- Building Materials: Mixers, screw conveyors, elevators, brick and tile equipment

- Textile & Printing: textile machines, printing and dyeing machines, printing machines, winding equipment

- Chemical & Environmental: Reactor, scraper, aerator, filtration equipment

 

Optional Configurations 

- Motor: ordinary motor, variable frequency motor, explosion-proof motor, servo motor, brake motor

- Output: solid shaft, hollow shaft (key connection/tightening sleeve), spline shaft, flange shaft, double output shaft

- Installation: horizontal, vertical, flange, torque arm, 360° any angle

- Protection: IP54/IP55/IP65/IP66, waterproof, dustproof and corrosion-proof

- Special Type: explosion-proof type, anti-corrosion type, high temperature resistance type, low noise type, high precision type

- Accessories: backstop, brake, temperature control sensor, oil level gauge, cooling fan

 

Packaging & Delivery 

►Packaging: Export plywood wooden box, internal moisture-proof film + foam fixed, anti-collision, moisture-proof, rust-proof, suitable for long-distance sea/land transportation.

►Transport: 20ft/40ft container, sea/air/express, global distribution, supports FOB/CIF/CFR and other trade terms.

►Delivery Time: 7–15 days for standard models; 15–30 days for customized models; 30–45 days for bulk orders.