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A rigid coupling is a mechanical device used to connect two shafts together at their ends for the purpose of transmitting power. Unlike flexible couplings, rigid couplings do not accommodate misalignment between shafts; they require precise alignment to function effectively and prevent damage. These couplings are ideal for applications where shafts are already well-aligned and where rigidity and torque transmission are critical. Common materials include steel, stainless steel, and aluminum, chosen based on the environment and load requirements.
Our rigid couplings are engineered for durability, high performance, and ease of installation. They feature a simple design with no moving parts, reducing maintenance needs. Key attributes include high torsional stiffness, zero backlash, and resistance to environmental factors such as corrosion and temperature variations. These couplings are suitable for various industries, including manufacturing, automotive, robotics, and aerospace, where precision and reliability are paramount.
Below are the detailed parameters for our rigid coupling product line, presented in list and table formats for clarity.
| Model Number | Bore Diameter Range (mm) | Outer Diameter (mm) | Length (mm) | Max Torque (Nm) | Max RPM | Weight (g) |
|---|---|---|---|---|---|---|
| RC-101 | 6-10 | 20 | 30 | 25 | 10,000 | 50 |
| RC-102 | 10-15 | 25 | 35 | 50 | 8,000 | 80 |
| RC-103 | 15-20 | 30 | 40 | 100 | 6,000 | 120 |
| RC-104 | 20-25 | 35 | 45 | 200 | 5,000 | 180 |
| RC-105 | 25-30 | 40 | 50 | 350 | 4,000 | 250 |
Rigid couplings are used in scenarios where shaft alignment is precise and minimal flexibility is needed. Common applications include:
What is the main difference between a rigid coupling and a flexible coupling?
Rigid couplings do not accommodate any misalignment between shafts and require precise alignment, while flexible couplings can absorb minor misalignments, vibrations, and shocks, providing more versatility in less perfectly aligned systems.
How do I select the right rigid coupling for my application?
Consider factors such as shaft diameter, torque requirements, RPM, environmental conditions (e.g., temperature, corrosion), and material compatibility. Refer to our product table for specifications and consult with our engineering team if needed for custom solutions.
Can rigid couplings be used in high-speed applications?
Yes, but it depends on the model. Our couplings have maximum RPM ratings (e.g., up to 10,000 RPM for RC-101). Ensure the selected model meets your speed requirements and that shafts are perfectly aligned to avoid imbalance issues.
What maintenance is required for rigid couplings?
Minimal maintenance is needed. Regularly inspect for signs of wear, corrosion, or loosening fasteners. Tighten set screws or clamps as per torque specifications, and clean in dirty environments to prevent debris buildup.
Are rigid couplings suitable for outdoor or corrosive environments?
Yes, especially models made from stainless steel with passivation treatment, which offer excellent resistance to corrosion. For harsh outdoor conditions, ensure proper material selection and consider additional protective coatings if necessary.
What happens if there is misalignment when using a rigid coupling?
Misalignment can lead to increased stress on shafts, bearings, and the coupling itself, resulting in premature wear, vibration, and potential failure. Always verify alignment during installation using precision tools.
Can I customize a rigid coupling for special requirements?
Absolutely. We offer customization options for bore sizes, materials, lengths, and special coatings. Contact our support team with your specifications for a tailored solution.
How do I install a rigid coupling properly?
Ensure shafts are clean and aligned within tolerance. Slide the coupling onto the shafts, align set screws or clamps with keyways if present, and tighten to the recommended torque value using a calibrated tool. Re-check alignment after tightening.
What is the typical lifespan of a rigid coupling?
Under proper alignment and within specified operating conditions, our rigid couplings can last for many years, often exceeding 10+ years in industrial applications. Lifespan depends on load, speed, and environmental factors.
Do rigid couplings require balancing?
For high-speed applications, balancing is recommended to prevent vibrations. Our standard couplings are balanced for common RPM ranges, but for extreme speeds, we can provide dynamically balanced units upon request.
