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Help CenterQJRS-D450 High Torque QJRS-D Series Reducer Metallurgical Heavy Equipment Gearbox
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Jiangsu Manqi Machinery Co., Ltd. is a professional manufacturer of high-quality industrial gearboxes, established in 2017 with a factory spanning 10,000-30,000 square meters. Our QJRS-D450 High Torque QJRS-D Series Reducer is engineered specifically for the demanding requirements of metallurgical heavy equipment, delivering exceptional reliability and performance in harsh operating conditions. This gearbox combines robust construction with precision engineering to ensure long service life and minimal downtime, making it a trusted choice for steel mills, mining operations, and heavy machinery applications. With our experienced team of 11-50 employees and a commitment to quality, we are proud to offer this product to customers worldwide, particularly in Eastern Europe, Southeast Asia, Africa, and South Asia.
Product Features & Benefits
- High Torque Capacity: The QJRS-D450 delivers outstanding torque output, enabling it to handle heavy loads in metallurgical equipment such as rolling mills, converters, and cranes.
- Advanced Planetary Design: Utilizes a multi-stage planetary gear system for high efficiency (up to 97%) and compact size, saving space in your machinery layout.
- Durable Construction: Housing made from high-strength cast iron or alloy steel, heat-treated gears and shafts, and precision bearings ensure long-term reliability under continuous heavy-duty operation.
- Optimized Lubrication System: Forced oil circulation with built-in cooling fins maintains optimal operating temperature, extending gear life and reducing maintenance intervals.
- Flexible Mounting Options: Available in flange, foot, or combination mounts to suit various installation requirements.
- Customizable Parameters: Input speed, output speed, ratio, and shaft configurations can be tailored to your specific application needs.
- Sealed for Harsh Environments: IP54 or higher protection level prevents dust and moisture ingress, ideal for dusty and humid metallurgical plants.
Technical Specifications (Typical)
| Parameter | Value |
|---|---|
| Rated Torque | Up to 450,000 Nm (model dependent) |
| Reduction Ratio | 20:1 to 400:1 (customizable) |
| Input Speed Range | 750 – 1500 rpm |
| Efficiency | ≥ 94% per stage |
| Operating Temperature | -20°C to +60°C |
| Protection Class | IP54 (IP65 optional) |
| Weight | Approx. 450 kg (configuration dependent) |
The QJRS-D450 is designed to meet the rigorous demands of the metallurgical industry, where continuous operation, shock loads, and extreme temperatures are common. Its compact planetary design reduces overall equipment footprint while providing high power density. Each unit undergoes strict quality control testing, including no-load and load run tests, to ensure smooth operation and low noise levels.
Why Choose Our QJRS-D450 Gearbox?
- Proven Reliability: Thousands of units in service across heavy industries worldwide.
- Easy Maintenance: Accessible inspection ports, replaceable seals, and standard parts reduce downtime.
- Cost-Effective: Competitive pricing combined with long service life offers excellent return on investment.
- Global Support: We ship from Port of Shanghai and provide technical support for our customers in Eastern Europe, Southeast Asia, Africa, and South Asia.
As a manufacturer with a dedicated team of 11-50 employees and a factory spanning over 10,000 square meters, Jiangsu Manqi Machinery Co., Ltd. is committed to delivering high-quality products. Our annual export value is below US$1 million, but we are rapidly growing and continuously improving our production processes. We have served customers in diverse markets including Eastern Europe, Southeast Asia, Africa, and South Asia, and we understand the specific needs of metallurgical heavy equipment. Every QJRS-D450 gearbox is backed by our rigorous quality management system, careful material selection, and skilled craftsmanship. We invite you to experience the durability and performance of our product. Contact us today for a detailed quotation or to discuss your custom requirements.
Frequently Asked Questions (FAQ)
-
What is the maximum torque output of the QJRS-D450?
The rated torque can reach up to 450,000 Nm, depending on the specific configuration and ratio. Please consult our technical team for exact values based on your application. -
Can this gearbox be used in high-temperature environments?
Yes, the QJRS-D450 is designed for operating temperatures up to 60°C. For higher temperatures, optional forced cooling systems are available upon request. -
What lubrication is recommended?
We recommend using synthetic gear oil (ISO VG 320-460) for optimal performance. The gearbox is equipped with a forced oil circulation system; a lubrication unit can be supplied as an accessory. -
Is the QJRS-D450 suitable for reversing loads?
Yes, the planetary design handles bidirectional rotation and shock loads effectively. However, for extreme reversing applications, we recommend consulting our engineers. -
What is the typical lead time?
Standard configurations can be shipped within 30-45 days after order confirmation. Customized units may require 45-60 days, depending on complexity. -
Do you provide installation and commissioning support?
We provide detailed installation manuals and technical drawings. Remote support is available, and on-site assistance can be arranged for large orders upon request. -
What warranty do you offer?
We offer a standard 12-month warranty from the date of shipment, covering manufacturing defects. Extended warranty options are available. -
Can I get a sample or test unit before bulk order?
Yes, we can provide a sample unit for evaluation. Please contact our sales team to discuss terms.
Jiangsu Manqi Machinery Co., Ltd. – Your Reliable Partner in Heavy Industrial Gearboxes.
Send Inquiry to This Supplier
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