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Help CenterHeavy-Duty Coupling, 4140 Alloy Steel, 1200 Nm Torque, Heat Treated, Standard Compliant
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Henan San Kuang Machinery Technology Co., Ltd. is proud to introduce our Heavy-Duty Coupling, precision engineered from 4140 Alloy Steel and rated for 1200 Nm torque. This coupling undergoes a strict heat treatment process to ensure superior strength and durability, meeting the highest demands of industrial power transmission. Designed to comply with international standards, it offers reliable performance in even the most challenging environments. As a trusted manufacturer with over 50 employees and a factory spanning 10,000–30,000 square meters, we deliver products that combine robust engineering with cost-effective solutions.
Our Heavy-Duty Coupling is built to withstand heavy loads, high speeds, and continuous operation. The use of 4140 alloy steel provides excellent fatigue resistance and wear characteristics, while the heat treatment (quenching and tempering) enhances hardness and toughness. This coupling is ideal for applications requiring precise torque transmission and minimal backlash, such as pumps, compressors, conveyors, and heavy machinery. Below are the key features and technical specifications:
| Parameter | Value |
| Material | 4140 Alloy Steel |
| Torque Rating | 1200 Nm |
| Heat Treatment | Quenched & Tempered (HRC 28–32) |
| Standard Compliance | ISO, DIN, ANSI – Customizable |
| Surface Finish | Black Oxide / Phosphating / as Requested |
| Bore Range | 20–100 mm (Customizable) |
Key Features & Benefits:
- High Strength-to-Weight Ratio: 4140 alloy steel provides exceptional strength without unnecessary weight, reducing rotational inertia.
- Enhanced Durability: Heat treatment ensures consistent hardness and resistance to deformation under heavy loads.
- Precision Machining: Tight tolerances (±0.02 mm) guarantee minimal vibration and noise during operation.
- Flexible Customization: Bore size, keyway, set screw, and surface finish can be tailored to your specific application.
- Wide Application: Suitable for pumps, compressors, gearboxes, mixers, and other industrial equipment.
- Cost-Effective: Our direct manufacturing approach reduces lead times and offers competitive pricing without compromising quality.
Technical Advantages:
- Fully machined and balanced to ISO 1940 G6.3 standard.
- Heat treatment is performed in-house with controlled atmosphere furnaces for consistent results.
- Each coupling undergoes 100% dimensional inspection and hardness testing before shipment.
- Available in both rigid and flexible configurations to accommodate misalignment.
The coupling's design ensures easy installation and maintenance. Its robust construction minimizes downtime, and the standard compliant design makes it interchangeable with many common coupling types. Whether you need a drop-in replacement or a custom solution, our engineering team can support you from concept to delivery.
Trust & Reliability:
Since 2022, Henan San Kuang Machinery Technology Co., Ltd. has grown rapidly, with an annual export value of US$2.5 Million – US$5 Million and a dedicated team of 51–100 employees. Our factory spans 10,000–30,000 square meters and is equipped with advanced CNC machining centers and heat treatment lines. We are proud to hold multiple certifications, including ISO9001, ISO14000, OHSAS18001, and ISO10441, ensuring that our production processes meet stringent quality and environmental standards. Our products are exported to North America, Europe, Southeast Asia, Africa, and the Middle East, shipped from major ports like Shanghai, Qingdao, and Tianjin.
We are committed to providing heavy-duty couplings that exceed expectations. With strict quality control, on-time delivery, and responsive customer service, we are your ideal partner for power transmission components. Contact us today for a quote or technical consultation. Let us help you keep your machinery running smoothly and efficiently.
Frequently Asked Questions (FAQ)
Q1: What is the maximum torque this coupling can handle?
This coupling is rated for 1200 Nm continuous torque. For peak loads, it can withstand up to 1500 Nm momentarily, depending on the application. Always consult our technical team for specific operating conditions.
Q2: Can the bore size be customized?
Yes, the bore size is fully customizable. We can machine standard metric or inch bores, as well as keyways, set screw holes, and other features per your drawing or specification.
Q3: Is this coupling suitable for high-speed applications?
Yes, the coupling is balanced to G6.3 grade and can operate at speeds up to 4000 RPM (depending on size). For higher speeds, additional balancing can be arranged.
Q4: What materials are available aside from 4140?
While 4140 alloy steel is standard for high torque applications, we also offer 45# steel, 42CrMo, and stainless steel options upon request. Please contact us for material selection advice.
Q5: How does the heat treatment affect the coupling's performance?
The quenching and tempering process increases hardness to HRC 28–32, improving wear resistance and fatigue strength. This ensures long service life even under cyclic loading.
Q6: Do you provide certificates of compliance or material test reports?
Yes, we can provide mill certificates, hardness test reports, and a certificate of compliance with the applicable standards. These are available upon request at no extra cost.
Q7: What is the typical lead time?
For standard sizes, lead time is 15–25 working days. Custom orders may require 25–35 working days, depending on complexity. We can expedite urgent orders upon request.
Q8: How do I ensure the coupling fits my existing equipment?
We recommend measuring the shaft diameter, keyway dimensions, and available space. Send us your dimensions or a drawing, and our engineers will verify compatibility and provide a drawing for approval before production.
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