Horizontal-Mounted Heavy Duty Helical Speed Reducer with Solid Shaft
The B Series Heavy Duty Helical Bevel Gearbox and Gear Reducer are designed for heavy-duty industrial applications, offering high efficiency and reliability through a combination of helical and bevel gears. They support multiple mounting configurations and are easy to maintain, reducing downtime and maintenance costs. The reducer provides high torque output with low noise, making it suitable for mining, steel, cement, and energy industries. Their robust construction ensures a long lifespan and high performance, enhancing production efficiency while being environmentally friendly with reduced energy consumption and noise levels.
Zhejiang Jiayu Transmission Machinery Co., Ltd. is a professional supplier specializing in the production of transmission equipment such as speed reducers and variable speed machines. With strong technical expertise and robust production and communication capabilities, the company has been dedicated to the research, development, and manufacturing of transmission products.
The company primarily produces:
Standard motor gear reducers (R, S, K, F series)
H/B series high-power reducers
RV series worm gear reducers
WP series worm reducers
X/B series cycloidal pinwheel reducers
Various planetary reducers
MB series stepless variable speed machines
T series spiral bevel gear shifters
G series fully enclosed gear reducers
Screw lifts
Small gear motors
These products are widely used across various industries in China.
Product Description
Housing material | HT250 High strength cast iron |
Housing hardness | HBS90-240 |
Gear material: | 20CrMnTi |
Surface hardness of gear | HRC58°-62° |
Gear core hardness | HRC33°-40° |
Input/output shaft material | 40CrMnTi |
Input/Output shaft hardness | HB220-250 |
Heat treatment | tempering, cementing, quenching etc |
Efficiency | 94%-96% |
Noise(Max) | 60-68dB |
Tem.rise: | 40°C |
Tem.rise | 50°C |
Vibration | ≤20um |
Backlash | ≤20Arcmin |
Motor | IP54, F class |
Motor shaft | 40Cr, Tempering, cementing, quenching etc. |

1. Superior Noise & Heat Reduction
The product features a unique sound-absorbing structure and a large cooling fan. This design significantly reduces operational noise, ensuring a quieter working environment, while the expanded surface area and enhanced fan efficiency improve heat dissipation, enabling stable performance and extended service life.
2. Precision Gear Manufacturing
Advanced grinding processes for cylindrical and bevel gears are employed to achieve high-precision tooth profiles and superior surface finish. This enhances meshing accuracy, improves operational stability and reliability, and enables more efficient power transmission with reduced energy loss.
3. Modular & Flexible Design
based on a modular combined system, we develop a full range of gear motors tailored to diverse needs. This approach offers high flexibility and adaptability, allowing rapid customization of drive solutions, shorter lead times, and easier maintenance and component replacement.
4. High Quality at Competitive Cost
We adhere to strict quality standards and control procedures to deliver products that match the performance and reliability of international top-tier brands (e.g., SEW-EURODRIVE) at a lower cost. We provide a premium, cost-effective alternative in the field of drive engineering.

Certifications



Packaging & Shipping

After Sales Service



1-Year Quality Assurance
24-hour online support
Professional Team Support
All products undergo rigorous inspection throughout production until pre-shipment. Additionally, we provide a 3-year quality warranty service. For any quality-related issues, please contact our service team, and we will provide solutions within 24 hours.
Our service team operates 24/7 to provide immediate responses to both after-sales product issues and new product inquiries. For special circumstances, we offer both online and on-site support services.
Zhejiang Jiayu maintains a professional engineering team capable of providing both online and on-site services. With years of project experience, we offer expert advice for both standard and specialized projects.
Company Profile

Zhejiang Jiayu Transmission Machinery Co., Ltd.
Zhejiang Jiayu Transmission Machinery Co., Ltd. is a professional supplier specializing in the production of transmission equipment such as speed reducers and variable speed machines. With strong technical expertise and robust production and communication capabilities, the company has been dedicated to the research, development, and manufacturing of transmission products.
The company's main products include:
Standard motor gear reducers (R, S, K, F series)
H/B series high-power reducers
RV series worm gear reducers
WP series worm reducers
X/B series cycloidal pinwheel reducers
Various planetary reducers
MB series stepless variable speed machines
T series spiral bevel gear shifters
G series fully enclosed gear reducers
Screw lifts
Small gear motors
These products are widely used across various industries in China.

1. Professional Supplier
Zhejiang Jiayu Transmission Machinery Co., Ltd. is a specialized manufacturer of transmission equipment, including speed reducers and variable speed drives.
2. Strong Technical Capability
The company possesses robust technical expertise, advanced production capacity, and efficient communication skills, enabling continuous dedication to R&D and innovation in transmission products.
3. Wide Industry Application
These products are widely used across diverse industrial sectors in China, demonstrating high adaptability and reliability in various applications.
4. Dedicated to Innovation
The company consistently focuses on the research, development, and improvement of transmission products to meet evolving market demands and technical challenges.




FAQ
1. Are you a trading company or factory?
ZT:We are a manufacturing factory.
2.What is the production time?
ZT:Sample Order: 4-7 days if out of stock, or delivery at once.
Massive Order: 5-20 days after receiving the deposit, depending on the specific order.
3.What qualifications or certifications do you have?
ZT:We hold an import and export license, as well as the following certifications: ISO 9001. Additionally, our company possesses several design patents.
4. What payment terms does your company accept?
ZT:For small testing orders, we accept Western Union and T/T. For large orders, we accept T/T and L/C. If you have any other questions, please feel free to contact us using the information below.
5. Can you provide us with the testing report?
ZT:Yes, we can provide thetesting report.
LINKS : Dongqi Crane