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Help Center304 Stainless Steel Flexible Coupling 20mm Bore 50Nm Torque With Set Screw
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Henan San Kuang Machinery Technology Co., Ltd. proudly presents our high-quality 304 Stainless Steel Flexible Coupling with a precision 20mm bore and a rated torque capacity of 50Nm, featuring durable set screws for secure shaft connection. As a dedicated manufacturer with a 10,000–30,000 m² facility and over 50 experienced professionals, we engineer this coupling to deliver reliable motion transmission in demanding industrial environments. Its corrosion-resistant 304 stainless steel body ensures long service life, while the flexible design compensates for misalignment, reducing vibration and protecting connected equipment.
This coupling is ideal for applications requiring precise shaft alignment, such as pumps, compressors, encoders, and servo motors. The integrated set screw provides a positive locking mechanism, preventing loosening under dynamic loads. Below are the key features and technical specifications:
- Superior Material: 304 stainless steel offers excellent corrosion resistance, making it suitable for food processing, chemical, and maritime environments.
- Precision Bore: 20mm bore diameter with tight tolerance (H7) ensures a snug fit on shafts, minimizing backlash.
- High Torque Capacity: Rated at 50Nm – capable of handling moderate to high torque applications without failure.
- Set Screw Locking: Two (or more) set screws provide a secure grip on the shaft, easily adjustable with a standard hex key.
- Flexible Element: The coupling’s flexible structure compensates for axial, angular, and parallel misalignment, extending machinery life.
- Compact Design: Slim profile saves space in tight installations.
- Easy Installation: Straightforward assembly with no special tools required.
- Customization Available: Bore size, outer diameter, keyway, and other dimensions can be adapted per request.
| Parameter | Value | Notes |
|---|---|---|
| Material | 304 Stainless Steel | Corrosion resistant |
| Bore Diameter (d) | 20 mm | H7 tolerance |
| Rated Torque | 50 Nm | Max dynamic torque |
| Set Screw | M4 or M5 (optional) | Hexagon socket type |
| Outer Diameter (D) | Available upon request | Typically 32–38 mm |
| Length (L) | Customizable | Standard 50–70 mm |
| Misalignment Compensation | Angular ≤1°, Parallel ≤0.2 mm, Axial ≤0.5 mm | Depends on model |
| Weight | Approx. 0.15 kg | Varies with dimensions |
Why choose our 304 Stainless Steel Flexible Coupling? The combination of premium material, generous torque rating, and secure set screw fastening delivers a robust solution for precision power transmission. Key benefits include:
- Reduced Maintenance: The flexible element absorbs shocks and misalignment, lowering wear on bearings and seals.
- Improved Efficiency: Minimal backlash and consistent torque transmission enhance system performance.
- Versatile Applications: Suitable for food processing machinery, packaging equipment, textile machinery, and general automation.
- Cost-Effective: 304 stainless steel provides a good balance between strength and affordability compared to exotic alloys.
- Reliable Locking: Set screws with a locking feature (e.g., thread-locking adhesive optional) ensure the coupling stays fixed even under vibration.
Our manufacturing facility, spanning 10,000–30,000 square meters in Luoyang, China, is equipped with advanced CNC machining centers and rigorous quality inspection systems. With an annual export value of US$2.5–5 million, we serve clients across North America, South America, Europe, Asia, Africa, and Oceania. Our team of 51–100 skilled employees is dedicated to producing couplings that meet international standards. We offer flexible shipping from major ports including Shanghai, Lianyungang, Qingdao, and Tianjin, ensuring timely delivery worldwide.
Trust in our expertise – Since 2022, Henan San Kuang Machinery Technology Co., Ltd. has focused on innovation and customer satisfaction. Every coupling undergoes dimensional checks, torque testing, and material verification before leaving the factory. We provide technical support and customized solutions to meet your specific requirements.
Ready to enhance your equipment’s reliability? Contact us today to place an order or request a quotation. Our sales team is ready to assist with bulk orders, custom bores, and special packaging.
Frequently Asked Questions
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Q: What is the maximum running speed for this coupling?
A: The maximum speed depends on the outer diameter and balancing grade. For a typical 20mm bore model with a 38mm OD, the maximum recommended speed is around 8,000–10,000 RPM. Please consult our technical team for your specific application. -
Q: Can this coupling handle misalignment from thermal expansion?
A: Yes, its flexible design can accommodate axial misalignment up to 0.5 mm, which helps absorb thermal expansion of shafts. For larger axial movements, we recommend a sliding hub or expansion joint. -
Q: Is the set screw provided? What size hex key do I need?
A: Yes, each coupling comes with one or two set screws (depending on length). The screws are typically M4 or M5, requiring a 2.5mm or 3mm hex key. Please specify your preferred thread size. -
Q: Can I order a custom bore size (e.g., 19mm or 22mm)?
A: Absolutely. We offer custom bore diameters from 6mm to 35mm. Additional charges may apply. Please provide your shaft size and tolerance requirements. -
Q: Does the coupling require lubrication?
A: No, the 304 stainless steel flexible coupling is maintenance-free. No lubrication is needed, making it ideal for clean environments. -
Q: What is the operating temperature range?
A: 304 stainless steel maintains its properties from -20°C to +400°C. The coupling can operate continuously up to 200°C without significant strength loss. For higher temperatures, consider alternative materials. -
Q: Do you offer certificates like material test reports?
A: Yes, we can provide a material certificate (mill test report) for the 304 stainless steel batch upon request. Additional testing (e.g., dimensions, hardness) is available at extra cost. -
Q: What packaging do you use for export?
A: Each coupling is individually wrapped in anti-rust paper, then packed in sturdy carton boxes with foam inserts. For bulk orders, we use wooden crates or pallets to ensure safe transit.
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