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Help CenterIndustrial Ball Cage CV Coupling Complete Constant Speed Transmission For Crane & Coal Mine Machinery
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As a professional manufacturer from Hebei Speed Torque Transmission Technology Co., Ltd., we are proud to present our Industrial Ball Cage CV Coupling Complete Constant Speed Transmission — a premium driveline solution specifically designed for demanding applications such as cranes, coal mine machinery, and other heavy-duty industrial equipment. Founded in 2017, our factory occupies 3,000–5,000 square meters and is staffed by a dedicated team of 101–200 employees, with an annual export value reaching US$5–10 million. We have successfully shipped to markets across North America, South America, Europe, Africa, Oceania, Southeast Asia, and more. This coupling embodies our commitment to reliable torque transmission, extended service life, and maintenance-free operation in harsh environments.
Key Features & Technical Advantages
Ball Cage Design for True Constant Velocity: The precision-ground ball cage and raceway system ensures a constant output speed even at high operating angles, eliminating vibration and noise.
High Torque Density: Compact structure delivers superior torque-to-weight ratio, ideal for space-constrained installations in crane hoists and coal conveyors.
Alloy Steel Construction: Manufactured from high-strength alloy steel (20CrMnTi / 40Cr) with case-hardening treatment, providing excellent wear resistance and fatigue life.
Sealed Lubrication System: Factory-filled with premium grease and equipped with multi-lip seals, the coupling is maintenance-free for extended periods.
Wide Angle Capability: Operating angle up to 15° without loss of speed uniformity, accommodating misalignment in heavy machinery.
Modular Assembly: Complete constant speed transmission assemblies are available, including flanges, yokes, and intermediate shafts as per customer specifications.
Technical Specifications (Typical Models)
| Parameter | Value | Remarks |
|---|---|---|
| Rated Torque | 500 – 50,000 N·m | Customizable up to 100,000 N·m |
| Max. Speed | 3000 rpm | Lower for larger sizes |
| Max. Operating Angle | 15° | At reduced torque |
| Shaft Diameter Range | 20 – 150 mm | Custom flanges available |
| Lubrication | Grease (NLGI 2) | Sealed lifetime lubrication |
| Material | Alloy Steel | 20CrMnTi / 40Cr |
| Surface Treatment | Phosphating / Black Oxide | Anti-corrosion |
| Weight | 5 – 500 kg | Depending on size & configuration |
Why Choose Our Ball Cage CV Coupling for Crane & Coal Mine Applications?
In the harsh environment of coal mines and crane operations, equipment failure can lead to costly downtime and safety risks. Our CV coupling offers the following direct benefits to your operations:
Reduced Maintenance: The sealed, lifetime-lubricated design reduces the need for periodic greasing and inspection, lowering total cost of ownership.
Improved Efficiency: Near-zero power loss at constant velocity means more of your engine's torque reaches the working machinery.
Enhanced Safety: Robust construction and precise balancing minimize vibration, protecting connected components (gearboxes, drums) from shock loads.
Customizable Fit: We can modify length, flange pattern, and yoke dimensions to match your existing driveline without requiring redesign.
Proven Reliability: Every unit undergoes rigorous testing including torque simulation, angle cycling, and seal integrity checks before shipment.
Trust & Credentials
As an ISO9001:2015 certified manufacturer, Hebei Speed Torque Transmission Technology Co., Ltd. ensures consistent quality through our integrated management system. Our factory has been serving global clients since 2017, with annual exports between US$5 million and US$10 million. We ship from major Chinese ports — Shanghai, Tianjin, and Qingdao — ensuring fast and reliable logistics. Our main markets span North America, South America, Europe, Africa, Oceania, the Middle East, and Southeast Asia. We have supplied couplings to crane OEMs and coal mine equipment manufacturers who demand high reliability. Our experienced R&D team can also assist in developing custom solutions tailored to your specific torque, angle, or environmental requirements. We invite you to experience the durability and performance of our ball cage CV coupling — place a trial order or contact our sales team for a quotation.
Frequently Asked Questions (FAQ)
Q1: What is the typical lead time for a standard ball cage CV coupling?
A: For standard sizes, lead time is approximately 20–30 working days after order confirmation. Custom designs may require 35–45 working days.
Q2: Can the coupling be used in explosive atmospheres like underground coal mines?
A: Yes, our standard coupling is made of non-sparking materials upon request. We can also provide additional anti-static seals and special surface treatments for hazardous environments. Please specify your safety requirements when ordering.
Q3: What operating angles can this coupling handle continuously?
A: At full rated torque, continuous operation up to 10° is recommended. For intermittent use, up to 15° is acceptable. For higher angles, please consult our engineering team.
Q4: How do I select the correct size for my crane or coal machine?
A: You need to provide the torque, speed, operating angle, shaft diameter, and space envelope. Our technical sales team will match the appropriate model or design a custom unit.
Q5: Is the coupling maintenance-free?
A: The ball cage CV coupling is pre-greased and sealed for life under normal operating conditions. However, we recommend visual inspection every 6 months to check for seal damage.
Q6: Do you offer samples for testing?
A: Yes, we provide sample orders for evaluation. Sample cost and shipping are negotiable. Once order is confirmed, sample cost can be deducted from bulk payment.
Q7: Can the coupling be supplied with special flange patterns (e.g., SAE, DIN)?
A: Absolutely. We can machine flanges to any standard or custom bolt pattern. Please provide a drawing or reference dimensions.
Q8: What is the warranty period for this product?
A: Standard warranty is 12 months from date of shipment. Extended warranty up to 24 months is available upon request for an additional cost.
For further technical data sheets, 3D models, or a quotation, please contact our team at Hebei Speed Torque Transmission Technology Co., Ltd. — your reliable partner in power transmission solutions.
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