Helical Geared Reducer
RC Helical Geared Reducer — Frame 07–167
Reduction Ratio 1.3:1 – 289.74:1 · Hardened Helical Gearing · Foot / Flange Mount
The RC helical geared reducer is a hardened-tooth helical gearbox built for high-efficiency industrial power transmission, reaching up to 98% transmission efficiency — significantly higher than worm-drive reducers. Its 20CrMnTi carburized and nitrided gear teeth (HRC58-62) are precision ground for stable, low-noise running under heavy continuous load. Available across 14 frame sizes (07–167) with reduction ratios from 1.3:1 to 289.74:1, and as a double-reduction DRC combination reaching ratios up to 27001:1 for extreme low-speed applications. Supplied in foot-mounted (RC), flange-mounted (RCF) or combined foot+flange (RC..F) configurations.
Reduction Ratio1.3:1 – 289.74:1
Gear Material20CrMnTi, HRC58-62
Mount TypeFoot / Flange / Foot+Flange
Motor Power Range0.09 – 160 kW
Product Features
Key design and engineering features of the RC helical geared reducer
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Up to 98% transmission efficiency — substantially higher than worm-drive reducers
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Carburized & nitrided 20CrMnTi gear teeth (HRC58-62), precision ground for low noise, stable running
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High-strength cast iron housing painted RAL7031 for corrosion and moisture resistance
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Modular design with 14 frame sizes covering a wide, finely-graded reduction ratio range
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DRC double-reduction combination extends ratio range up to 27001:1 for extreme low-speed needs
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Universal housing design supports foot, flange, and combined mounting configurations
Technical Specifications
Full parameter data and configuration options
⚙ RC Foot-Mounted Configuration
⚙reducer-2-config.jpg
📐 Parts Diagram
📐reducer-2-dim.jpg
| Parameter | Specification |
|---|
| Series | RC (Foot-Mounted) / RCF (Flange-Mounted) / RC..F (Foot+Flange) / DRC (Combination) |
| Reducer Type | Helical Geared Reducer, Hardened Tooth Surface |
| Frame Size Range | 07, 17, 27, 37, 47, 57, 67, 77, 87, 97, 107, 137, 147, 167 |
| Reduction Ratio — RC | 1.30 : 1 – 289.74 : 1 |
| Reduction Ratio — DRC (combination) | 90 : 1 – 27001 : 1 |
| Motor Power Range | 0.09 kW – 160 kW |
| Motor Poles | 2P, 4P, 6P, 8P |
| Housing Material | High-Strength Cast Iron |
| Gear Material | 20CrMnTi steel, carburized & nitrided, tooth hardness HRC58-62 |
| Transmission Efficiency | Up to 98% per stage |
| Surface Finish | Cast iron housing painted RAL7031 |
| Mounting Positions | M1 – M6 |
| Terminal Box Position | R (0°), B (90°), L (180°), T (270°) |
* Full dimensional drawings (mounting hole layout, shaft diameter, center height per frame size) are available on request — this series has a large number of frame/configuration combinations, so we prepare the exact drawing for your specific frame size and mounting type to guarantee accuracy.
Applications
Typical industries and equipment where the RC helical geared reducer excels
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Heavy Material Handling
Belt conveyors, bucket elevators and crane/hoist systems requiring high-torque, continuous-duty transmission.
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Mixing & Process Equipment
Industrial mixers, agitators and reactors that demand high efficiency and stable low-noise operation under heavy load.
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Metal & Cement Processing
Rolling mills, cement kilns and mineral processing equipment requiring robust, corrosion-resistant gearboxes.
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Water Treatment & Pumping
Sludge scrapers, aerators and large pump drives operating continuously in humid or corrosive environments.
Advantages
Why engineers and buyers choose CoreMotor Tech for the RC helical geared reducer
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Flexible order quantities and competitive wholesale pricing — OEM/ODM bulk pricing available
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Export documentation and shipping coordination provided
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14 frame sizes covering light to heavy-duty loads, plus DRC combination for extreme ratios
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English-speaking sales and technical support via WhatsApp
Frequently Asked Questions
Common questions about the RC helical geared reducer
What is the difference between RC, RCF, RC..F and DRC?+
RC is foot-mounted, RCF is flange-mounted, RC..F combines both foot and flange mounting on the same unit, and DRC is a double-reduction combination of two gearboxes in series for very high ratios (up to 27001:1). Tell us your installation method and required ratio and we'll recommend the right configuration.
How is RC different from a worm gear reducer (like your NMRW series)?+
RC uses hardened helical gears and reaches up to 98% efficiency per stage, versus roughly 50-90% for worm gear reducers depending on ratio. RC is better suited to continuous heavy-duty and high-power applications; worm reducers are more compact and offer natural self-locking at a lower cost for lighter loads.
Does the RC reducer come with a motor?+
RC reducers are supplied as a gearbox matched to a specific IEC motor frame size. We can supply the gearbox alone or as a complete geared motor set — tell us your required output speed, torque and motor power and we will recommend the correct frame size and ratio.
Is OEM/custom specification available?+
Yes. We support custom mounting position, terminal box orientation, shaft configuration and branding with flexible MOQ. Contact us via WhatsApp for OEM pricing and exact dimensional drawings for your frame size.
