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Help Center304 Stainless Steel Heavy-Duty Coupling, 500 Nm Torque, 50mm Bore for Industrial Shaft Connection
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Henan San Kuang Machinery Technology Co., Ltd. is a professional manufacturer located in Luoyang, Henan, China, with a factory area of 10,000–30,000 square meters and an annual export value of US$2.5–5 million. Our 304 Stainless Steel Heavy-Duty Coupling is designed for demanding industrial shaft connection applications, delivering a reliable torque transmission of up to 500 Nm with a 50 mm bore. Crafted from premium 304 stainless steel, this coupling offers excellent corrosion resistance, durability, and precise alignment, making it an ideal choice for pumps, compressors, conveyors, and other rotating machinery.
This coupling is engineered to withstand harsh environments while maintaining consistent performance. Whether you need a rigid or flexible connection, our heavy-duty design ensures minimal backlash and long service life. Below we detail the key features, technical specifications, and benefits that set this product apart.
Key Features
- 304 Stainless Steel Construction – Exceptional corrosion resistance suitable for wet, chemical, or outdoor environments.
- High Torque Capacity (500 Nm) – Handles heavy loads and shock loads without failure.
- 50 mm Bore Diameter – Accommodates standard shaft sizes; custom bores available upon request.
- Precision Machined – Balanced design reduces vibration and ensures smooth operation.
- Easy Installation – Simple design allows quick mounting and alignment.
- Low Maintenance – No lubrication required for most applications, reducing downtime.
- Customizable Options – Keyways, set screws, clamping hubs, and different lengths can be tailored to your needs.
Technical Specifications
| Material | 304 Stainless Steel (AISI 304) |
| Nominal Torque | 500 Nm |
| Bore Diameter | 50 mm (custom bores available) |
| Maximum Speed | Up to 3000 RPM (depending on balance) |
| Weight | Approx. 2.5 kg (varies with design) |
| Surface Finish | Polished or Matte (optional) |
| Operating Temperature | -20°C to +200°C (standard) |
Advantages for Your Application
- Enhanced Durability – 304 stainless steel resists rust, corrosion, and chemical attack, extending service life in harsh environments.
- Reliable Power Transmission – The 500 Nm torque rating ensures stable performance even under heavy loads, reducing the risk of equipment failure.
- Flexible Sizing – The 50 mm bore is a common size, but we offer custom bores and keyways to match your exact shaft dimensions.
- Reduced Maintenance – No need for regular lubrication or adjustments, saving time and operational costs.
- Improved Safety – Secure connection prevents shaft misalignment and potential accidents.
Our factory has been in operation since 2022, equipped with advanced CNC machining centers and testing equipment. We employ 51–100 skilled workers and maintain strict quality control processes. The company has passed multiple certifications including ISO9001, ISO14000, OHSAS18001, SA8000, and others, ensuring that every product meets international standards. Our main markets span North America, South America, Europe, Southeast Asia, Africa, and Oceania, with ports of shipment in Shanghai, Lianyungang, Qingdao, and Tianjin.
We are committed to providing high-quality couplings at competitive prices. With an annual export value of US$2.5–5 million, we have built a strong reputation for reliability and customer satisfaction. Whether you need a standard coupling or a custom design, our engineering team is ready to assist you. Contact us today for a quote or technical consultation.
Frequently Asked Questions (FAQ)
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Q: What is the maximum torque this coupling can handle?
A: This coupling is rated for a nominal torque of 500 Nm. For higher torque requirements, please contact us for custom solutions. -
Q: Can the bore size be customized?
A: Yes, we offer custom bore diameters and keyways. Please provide your specific shaft dimensions. -
Q: Is this coupling suitable for high-speed applications?
A: It can operate up to 3000 RPM under balanced conditions. For higher speeds, we recommend precision balancing. -
Q: What materials are available besides 304 stainless steel?
A: We can also produce couplings in 316 stainless steel, carbon steel, or alloy steel upon request. 304 is standard for general corrosion resistance. -
Q: Does the coupling require any maintenance?
A: No regular lubrication is needed. Periodic inspection for wear is recommended, but the design is low-maintenance. -
Q: What certifications does your company hold?
A: Our company is certified under ISO9001, ISO14000, OHSAS18001, SA8000, and many other standards (see company profile). Each coupling is tested for quality. -
Q: How long is the delivery time?
A: For standard couplings, delivery is typically 15–25 working days. Custom orders may take longer depending on complexity. -
Q: Do you provide samples for testing?
A: Yes, we can provide samples. Please contact our sales team for sample availability and terms.
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