R Series Gearbox: Innovative Design for Maximum Performance

• Customization: Available
• Application: Motor
• Function: Change Drive Torque, Speed Changing, Speed Reduction
• Model NO.: R 37
• Layout: Coaxial
• Hardness: Hardened Tooth Surface
• Installation: Horizontal Type
• Step: Three-Step
• Type: Cylindrical Gear Box
• Input Power Range: 0.18kw - 200K
• Output Torque: 12n·M - 28,000n·
• Reduction Ratio: 1.35:1 - 400:1
• Operational Efficiency: ≥95%
• Transport Package: Standard Export Wood Packing
• Specification: 50*30*30cm
• Trademark: Xinkai
• Origin: China
• HS Code: 84834020
• Production Capacity: 5000 PCS/Year
• Package Size: 50.00cm * 80.00cm * 50.00cm
• Package Gross Weight: 30.000kg

Product Description

R Series Helical Gear Reducer: High-Efficiency Power Transmissio

The R series helical gear reducer is a high-performance core component in industrial power transmission, standing out as a top-tier helical gear reducer and a key part of the R series gearbox family. This premium helical gearbox integrates durability, efficiency, and versatility, making it indispensable for manufacturing, construction, and automation industries
As a specialized hardened tooth surface reducer, it boasts exceptional wear resistance and load-bearing capacity, engineered to withstand continuous heavy-duty operations. Classified as a coaxial helical gearmotor, it features a compact inline structure that optimizes space usage while ensuring smooth, low-noise power transfer—an advantage inherent to its coaxial gear reducer design. The multi-stage helical transmission further enhances precision and energy efficiency, solidifying its reputation as a reliable R series gear unit.Flexibility defines this reducer: it offers both flange mounted reducer and foot/flange mounted reducer options, adapting seamlessly to diverse installation requirements. From concrete mixers to conveyors, packaging machinery to industrial pumps, its robust design delivers consistent high torque output, even in harsh working conditions. Each unit adheres to strict quality standards, ensuring long service life and minimal maintenance.

Available in a range of models to match varying power and speed needs, the R series helical gear reducer balances performance and practicality, making it the preferred choice for professionals seeking efficient, durable power transmission solutions. Whether for standard applications or customized setups, this gearbox delivers unmatched reliability and value.

Specification

R Series Helical Gear Reducer - Technical Specification

1. Product Overvie
The R series helical gear reducer (also referred to as R series gearbox or R series gear unit) is a high-performance power transmission device, integrating the advantages of helical gear reducer and coaxial gear reducer design. As a premium helical gearbox, it is engineered for industrial applications requiring stable torque output and efficient power conversion
2. Core Construction & Material Specification
Gear System: Precision-machined helical gears with hardened tooth surface reducer technology; tooth surface hardness reaches HRC 58-62, ensuring wear resistance and long service life
Transmission Structure: Multi-stage helical transmission design, adopted in the coaxial helical gearmotor configuration for compact footprint and inline power transfer
Housing Material: High-strength cast iron (HT250) or aluminum alloy (for light-duty models), providing excellent rigidity and heat dissipation
Shaft Material: High-carbon alloy steel (40Cr) with quenching and tempering treatment, ensuring high torque-bearing capacity
3. Performance Parameter
Input Power Range: 0.18kW - 200k
Output Torque: 12N·m - 28,000N·
Reduction Ratio: 1.35:1 - 400:1 (single-stage to multi-stage combinations
Operational Efficiency: ≥95% (single-stage), ≥90% (three-stage
Ambient Temperature: -10℃ - +40℃ (with proper ventilation
Protection Class: IP54 (standard), IP65 (optional
4. Mounting Configuration
Available as flange mounted reducer (B5/B14 flange standards) and foot/flange mounted reducer (B3/B35 foot mounting + flange combination)Coaxial gear reducer inline design enables direct connection with motors, reducing installation space and alignment complexity
5. Key Feature
Integrated helical gearbox precision: Low noise (≤75dB at 1500rpm) and smooth operation
Hardened tooth surface reducer durability: Resists heavy loads and frequent start-stop cycles
Coaxial helical gearmotor compatibility: Easily matches AC motors, servo motors, and frequency converters
Modular design: Facilitates maintenance and replacement of components

Speed Ratio Range and Maximum Torque
Model	27	37	47	57	67	77	87	97	107
Configuration Type	RRF
Transmission Ratio	3.37~	3.41~	3.83-	4.39-	4.29-	5.31-	5.30~	4.5~	4.92~
	135.09	134.82	176.88	186.89	199.81	195.24	246.54	289.74	251.15
Permissible torque (N m)	130	200	300	450	600	820	1550	3000	4300

Company Profile

Shanxi Pingyao Reducer Co., LTD.

Since 1958, Shanxi Pingyao Reducer Co., LTD., affectionately known as Shanxi Pingyao Reducer Factory, has been a trailblazer in the industrial arena. With a distinguished legacy in research, development, manufacturing, and sales, we have established ourselves as specialists in crafting an extensive range of reducers and electric rollers. Our commitment to unparalleled quality and innovation is evidenced by our prestigious certifications, including ISO9001 for impeccable quality management, ISO14001 for our proactive environmental preservation, and OHSAS18001, ensuring exceptional occupational health and safety standards. Our products proudly feature the esteemed American Association certification and the national mining products coal mine safety mark certification, underscoring our commitment to safety and reliability. As a key player in China's industrial sector and a beacon of innovation in Shanxi Province, our 'Xinkai' trademark is recognized as a China Famous Trademark, testifying to our relentless pursuit of excellence and pioneering spirit.

Possess strong production, manufacturing, and design capabilities.

Step into our spacious, well-equipped factory, and you'll witness firsthand our unmatched capabilities in manufacturing and designing top-tier reducers.
With advanced machining equipment, orderly production lines, and a team of skilled engineers and technicians, we excel in producing high-precision reducers like the Gear Box Reducer for Oil Pumping Unit and other industrial transmission solutions. Our facility is designed for efficiency—from raw material processing to final product assembly, every stage reflects our commitment to quality and scale.
Beyond manufacturing, our robust R&D team drives innovation. We continuously refine designs, develop new models, and customize solutions to meet diverse industrial needs, whether for standard series or bespoke reducer systems.
Choose us, and you're partnering with a factory that combines strong manufacturing prowess with cutting-edge design research—ensuring your operations get reliable, high-performance reducers every time.

Our Advantages

At Shanxi Pingyao Reducer Co., Ltd., we proudly uphold superior standards of quality control, ground-breaking product innovation, and unmatched after-sales support. Our unwavering dedication to scientific research drives us to continuously augment our capabilities and resources. We offer an extensive range of high-performance products, such as the extraordinary double arc herringbone gear reducer, along with the robust ZDY, ZLY, ZSY hard tooth surface cylindrical gear reducers, the innovative DBY, DCY conical cylindrical gear reducers, the efficient cycloidal pin wheel reducers, the advanced NGW planetary gear reducers, and the formidable JS mining high-power reducer. Our impressive portfolio features over 20 series and more than 3,000 meticulously engineered specifications, crafted to cater to a wide array of industry needs, including electric rollers.

FAQ

R- Series Gearbox - FAQ

1. 
Q:What is the core difference between R series gearbox and standard helical gear reducer
A:The R series gearbox is a specialized helical gear reducer designed with a coaxial gear reducer structure, integrating the compactness of a coaxial helical gearmotor and the durability of a hardened tooth surface reducer. Unlike general helical gearboxes, it emphasizes high torque output and space-saving inline installation, making it ideal for heavy-duty industrial applications like concrete mixers or conveyors

Q:Can the R series helical gear reducer be mounted in both foot and flange configurations
A:Yes. The R series helical gear reducer supports flexible mounting options: it is available as a flange mounted reducer (for fixed, space-constrained setups) or a foot/flange mounted reducer (for versatile positioning). This adaptability aligns with diverse industrial installation requirements, ensuring compatibility with most machinery setups

3. 
Q:What makes the R series gear unit suitable for continuous heavy-duty operations
A:As a hardened tooth surface reducer, the R series gear unit features precision-machined helical gears with surface hardness up to HRC 58-62, ensuring exceptional wear resistance and load-bearing capacity. Its multi-stage helical transmission design also minimizes energy loss (efficiency ≥95% for single-stage models) and reduces noise, enabling reliable continuous operation under high-load conditions

4. 
Q:Is the R series gearbox compatible with different motor types
A:Absolutely. The R series gearbox (as a coaxial helical gearmotor) is engineered for universal motor compatibility. It can be seamlessly paired with AC induction motors, servo motors, or frequency converters, thanks to its modular design and standard input/output interfaces. This flexibility makes it a versatile choice for automated production lines, pumps, and other motor-driven equipment