304 Stainless Steel Single Universal Joint Coupling – 40mm Bore, 78mm OD, Keyway + Set Screw, 170mm Length

Factory Direct | SUS304 Stainless Steel | Single Joint Design | 40mm H7 Bore | 78mm Outer Diameter | 170mm Overall Length | 12mm Keyway | 10mm Set Screw | 45° Max Operating Angle | Corrosion-Resistant | OEM Customizable

The Apexcoupling 304 Stainless Steel Single Universal Joint Coupling is a high-precision, corrosion-resistant power transmission component engineered for reliable performance in demanding industrial environments. Manufactured from premium SUS304 stainless steel, this single universal joint (also known as a cardan joint or U-joint) provides excellent resistance to moisture, chemicals, and oxidation, making it ideal for food processing, packaging machinery, medical equipment, marine applications, and outdoor installations.

Featuring a precision-ground H7 bore for accurate shaft fit, a 12mm keyway for positive torque transmission, and a 10mm set screw for secure shaft fixation, this coupling delivers reliable power transmission even under heavy loads. The single joint configuration accommodates angular misalignment up to 45° per joint, while the robust 304 stainless steel construction ensures long service life in corrosive environments. With full OEM/ODM/OBM customization support, this universal joint is the perfect solution for industrial machinery, conveyor systems, automation equipment, food & beverage processing, and custom drive shaft applications.

✅ Premium 304 stainless steel – excellent corrosion resistance for harsh environments. 40mm H7 precision bore – accurate shaft fit, reduced vibration. 12mm keyway + 10mm set screw – secure positive torque transmission. 45° angular misalignment capacity – accommodates shaft offset. 170mm length × 78mm OD – robust design for heavy-duty applications. ISO9001 certified quality – reliable and consistent performance.

Key Technical Specifications

Product Dimensions

Product Structure

1. 304 Stainless Steel Yokes – Precision-machined from premium SUS304 stainless steel, providing excellent corrosion resistance, durability, and long service life in harsh environments.

2. Precision H7 Bore – Ground to H7 tolerance for accurate shaft fit, reducing vibration and ensuring smooth power transmission.

3. 12mm Keyway – Provides positive, non-slip torque transmission for high-torque applications.

4. 10mm Set Screw Fastening – Secure shaft fixation, preventing slippage under heavy loads.

5. Pin-and-Block Bearing Design – The joint yokes are made of 304 stainless steel; the pins and blocks are precision machined, selectively heat treated, and ground for high strength, accuracy, and wear resistance.

6. Single Joint Configuration – Accommodates angular misalignment up to 45° per joint, ideal for shafts with angular offset.

💡 How it works: This single universal joint coupling connects two shafts that are not perfectly aligned. The pin-and-block bearing assembly allows angular misalignment up to 45° per joint while transmitting torque and rotational motion. The 12mm keyway provides positive torque transmission, while the 10mm set screw securely locks the coupling to the shafts. The 304 stainless steel construction provides excellent corrosion resistance for demanding environments.

Key Features & Advantages

Applications

The 304 stainless steel single universal joint coupling is widely used across various industries:

• Food & Beverage Processing – Hygienic, corrosion-resistant connections in packaging and processing equipment

• Packaging Machinery – Wrapping machines, carton sealers, labeling equipment

• Industrial Machinery – General power transmission, conveyor drives

• Conveyor Systems – Material handling, assembly lines

• Automation Equipment – Pick-and-place systems, robotics, linear actuators

• Medical Devices – Precision motion systems, diagnostic equipment

• Marine Applications – Corrosion-resistant drives in harsh saltwater environments

• Printing Equipment – Register control, paper feed systems

• Textile Machinery – Spinning, weaving, finishing equipment

• Pharmaceutical Equipment – Clean room compatible, corrosion-resistant

• Agricultural Machinery – Farm equipment, irrigation systems

• Pump Equipment – Fluid handling systems

Why Choose Apex Coupling for 304 Stainless Steel Universal Joints?

Customization Options

FAQ

Q: What is a universal joint coupling?
A: A universal joint coupling (also called a U-joint, cardan joint, or Hooke’s joint) is a mechanical coupling that connects two shafts, allowing them to transmit torque even when they are not perfectly aligned. It accommodates angular misalignment while maintaining smooth power transmission.

Q: What is the advantage of 304 stainless steel?
A: 304 stainless steel offers excellent corrosion resistance, making it ideal for applications exposed to moisture, chemicals, and harsh environments. It also provides good strength, durability, and wear resistance.

Q: What is the maximum operating angle?
A: This single universal joint coupling accommodates up to 45° angular misalignment per joint. For continuous operation, we recommend keeping the angle below the maximum to extend bearing and cross shaft life.

Q: What is the bore tolerance?
A: The standard bore tolerance is H7, providing a precision fit for accurate shaft alignment and reduced vibration.

Q: What fastening methods are available?
A: This coupling features a 12mm keyway for positive torque transmission and a 10mm set screw for secure shaft fixation. Other options include round bore + set screw, hexagon bore, and square bore.

Q: Is the coupling corrosion-resistant?
A: Yes. Made from 304 stainless steel with oxide finish, this coupling is highly resistant to moisture, chemicals, and oxidation – suitable for food, packaging, marine, and outdoor applications.

Q: What are the common applications?
A: Food & beverage machinery, packaging equipment, conveyor systems, industrial machinery, automation equipment, medical devices, marine applications, and printing machinery.

Q: Can I get a custom coupling?
A: Yes. We offer OEM, ODM, and OBM customization – custom bores, lengths, keyways, connection types, and finishes available.

Q: What is the warranty?
A: 1 Year – quality assured.

Q: What is the lead time?
A: Stock items ship immediately. Custom orders typically require 7-15 days.

Request a Quote

Send us your required specifications (bore diameter, outer diameter, length, keyway size, connection type), quantity, and any customization requirements. Our engineers will provide a quotation within 24 hours.