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Help CenterQY34S500 Crane Reducer High Load Cylindrical Gearbox for Overhead Crane Driving System
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Jiangsu Manqi Machinery Co., Ltd. is proud to present the QY34S500 Crane Reducer – a high-performance cylindrical gearbox specifically engineered for overhead crane driving systems. Since our establishment in 2017, we have focused on delivering reliable, durable transmission solutions for material handling equipment. This reducer combines robust construction with advanced gear design to handle extreme loads while maintaining smooth operation. Whether you are upgrading an existing crane or building a new system, the QY34S500 offers the strength and precision your application demands.
Our factory, spanning 10,000–30,000 square meters in Suzhou, Jiangsu, China, is equipped with modern machining centers and quality control systems. Every unit undergoes rigorous testing before shipment to ensure consistent performance. With a dedicated team of 11–50 employees and annual export value below US$1 million, we are committed to providing personalized service and competitive pricing for clients in Eastern Europe, Southeast Asia, Africa, and South Asia.
Key Features & Technical Specifications
- High Load Capacity: Designed to withstand heavy lifting and continuous operation in overhead crane applications, with case-hardened alloy steel gears for maximum durability.
- Precision Cylindrical Gears: Helical or spur gear profiles ensure quiet, efficient power transmission with minimal vibration.
- Robust Housing: Made from high-strength cast iron or steel, providing excellent rigidity and thermal dissipation.
- Flexible Mounting: Foot-mounted design (optional flange mounting) allows easy integration into existing crane drive systems.
- Customizable Ratios: Available with multiple gear ratios to match your specific speed and torque requirements – contact us for availability.
- Sealed Lubrication: Oil bath or forced lubrication systems ensure long-lasting performance even in dusty or humid environments.
- Oversized Bearings: High-capacity roller bearings support radial and axial loads, extending service life.
| Model | QY34S500 |
| Gear Type | Cylindrical (Helical / Spur) |
| Rated Load Capacity | High (suitable for 5–50 ton overhead cranes, depending on configuration) |
| Input Speed Range | 500–1500 RPM |
| Output Torque | Up to 50,000 Nm (customizable upon request) |
| Housing Material | High-strength Cast Iron (optional Steel) |
| Mounting | Foot-mounted (Flange optional) |
| Lubrication | Oil bath / Forced circulation (optional) |
| Color | Customizable (standard: RAL 5010 Blue) |
| Certification | Manufactured in accordance with international quality standards (details available upon request) |
The QY34S500 is built to deliver reliable performance under the most demanding conditions. Its compact design allows for easy installation in limited spaces, while the high-strength gears reduce maintenance intervals. For crane operators, this translates to less downtime, lower total cost of ownership, and improved safety. The gearbox is also compatible with common brake and coupling systems, making it a versatile upgrade for existing overhead cranes.
Trust & Reliability
As a manufacturer located in Suzhou, Jiangsu, we control every step of production – from raw material sourcing to final assembly. Our factory spans 10,000–30,000 square meters, with a dedicated team of 11–50 professionals who focus on quality and customer satisfaction. Although our annual export value is below US$1 million, we have built strong relationships with clients in Eastern Europe, Southeast Asia, Africa, and South Asia through consistent product quality and responsive after-sales support. We ship from the Port of Shanghai, ensuring timely delivery worldwide.
We are confident that the QY34S500 Crane Reducer will exceed your expectations. Contact us today for a competitive quotation or to discuss your specific requirements. Our team is ready to provide technical support and customization options to make your overhead crane driving system more efficient and reliable.
Frequently Asked Questions
- What types of overhead cranes is the QY34S500 suitable for? It is designed for single-girder, double-girder, and bridge cranes with lifting capacities typically between 5 and 50 tons. For specific applications, please consult our engineering team.
- Can I customize the gear ratio? Yes, we offer customizable gear ratios to match your required output speed and torque. Please provide your input speed and desired output parameters when ordering.
- What is the expected service life of this reducer? With proper lubrication and maintenance, the gearbox can operate for over 10 years under normal conditions. The case-hardened gears and oversized bearings contribute to long-term durability.
- Do you provide installation drawings or guidance? Yes, we supply dimensional drawings and mounting instructions with each unit. Technical support is also available via email or phone.
- Can the gearbox be used in outdoor or harsh environments? Absolutely. The sealed housing and optional corrosion-resistant coating make it suitable for outdoor use, including dusty or humid conditions. Additional protection (e.g., IP65) can be provided upon request.
- What is the typical lead time? Standard models are usually shipped within 15–25 working days after order confirmation. Customized orders may require additional time – please inquire for exact lead times.
- Do you offer a warranty? Yes, we provide a standard 12-month warranty from the date of shipment, covering manufacturing defects. Extended warranty options are available upon request.
- How do I choose the correct model for my crane? We recommend providing the crane’s lifting capacity, travel speed, motor power, and operating conditions. Our sales engineers will help you select the optimal reducer configuration.
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