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Help CenterRobot Blue Aluminum Flexible Shaft Coupling Rigid Coupler Connector 2-10mm
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Welcome to Hebei Speed Torque Transmission Technology Co., Ltd. – your trusted partner in precision motion control solutions. Our Robot Blue Aluminum Flexible Shaft Coupling Rigid Coupler Connector 2-10mm is meticulously engineered to deliver reliable torque transmission and misalignment compensation for robotic and automation applications. Featuring a vibrant blue anodized aluminum body, this coupling combines the flexibility needed for vibration damping with the rigidity required for precise positioning. Whether you need a flexible variant for parallel/angular misalignment or a rigid coupler for high torque and zero backlash, this product offers both configurations in one compact design. Backed by our factory’s ISO9001 quality system, each unit undergoes strict dimensional and performance checks to ensure lasting durability.
This coupling is specifically designed for handling shaft diameters from 2 mm to 10 mm, making it ideal for small servo motors, steppers, encoders, and robotic joints. The lightweight yet strong 6061-T6 aluminum alloy minimizes inertia while maintaining excellent torsional strength. The blue anodized surface not only adds a professional aesthetic but also provides corrosion resistance for long service life. Upgrade your equipment with a connector that offers both flexibility and rigidity in one versatile package.
Key Features & Technical Specifications
- Dual Function Design: Acts as either a flexible shaft coupling (compensating for angular, parallel, and axial misalignment) or a rigid coupler (for high positional accuracy and zero backlash) – simply choose the clamping style or set screw option.
- Material Excellence: Machined from high-grade 6061-T6 aluminum alloy, offering optimal strength-to-weight ratio. Blue anodized finish provides excellent wear and corrosion resistance.
- Precision Bore Range: Accommodates shaft diameters from 2 mm to 10 mm (other sizes available upon request). Bore tolerance H8 ensures a snug fit without excessive play.
- Compact Dimensions: Outer diameter options: 12 mm, 14 mm, 16 mm, 18 mm, 20 mm; Length: customizable from 20 mm to 40 mm (standard lengths: 25 mm, 30 mm, 35 mm).
- Low Rotational Inertia: Ideal for high-speed applications up to 10,000 RPM (depending on size), reducing energy consumption and system wear.
- Zero Backlash Operation: Clamp-type design ensures firm grip and eliminates play, crucial for precise positioning in CNC, robots, and encoders.
- Vibration Damping: The flexible slit pattern reduces transmission of vibration and shock loads, protecting connected components.
| Model | Bore Diameter (mm) | Outer Diameter (mm) | Length (mm) | Max Torque (Nm) | Max RPM |
| SC-12 | 2 – 6 | 12 | 25 | 0.5 | 12,000 |
| SC-14 | 3 – 8 | 14 | 30 | 0.8 | 10,000 |
| SC-16 | 4 – 10 | 16 | 35 | 1.2 | 9,000 |
Customer Benefits: By using this coupling, you reduce installation time thanks to the pre-drilled and tapped clamping screws. The dual configuration means you don’t need to stock separate flexible and rigid couplers – one unit adapts to your need. The blue anodized finish also provides visual identification of size and torque rating, simplifying maintenance. Furthermore, the lightweight aluminum construction reduces the load on shaft bearings, extending the life of your motors and encoders.
Trusted Quality & Global Reach
Hebei Speed Torque Transmission Technology Co., Ltd. has been delivering precision coupling solutions since 2017. Our factory spans 3,000 – 5,000 square meters and employs a skilled team of 101 – 200 people. With an annual export value of US$5 – US$10 million, we serve clients across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. All our products are manufactured under an ISO9001 certified quality management system, ensuring consistent performance and long-term reliability. We ship from major Chinese ports: Shanghai, Tianjin, and Qingdao. We invite you to place a trial order or request custom bore sizes – our engineering team is ready to support your specific drive train requirements. Contact us today for competitive pricing and fast delivery!
Frequently Asked Questions
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Q: Is this coupling truly both flexible and rigid?
A: Yes. The design allows you to use it as a flexible coupling (with the cut-out pattern providing elasticity) or as a rigid coupler by selecting a solid variant or tightening the clamping screws firmly. Please specify your requirement when ordering to ensure the correct style. -
Q: What shaft diameters can I use?
A: The standard bore range is 2 mm to 10 mm. We can also custom machine bores outside this range upon request (contact our sales team). -
Q: Does the blue anodized coating affect performance?
A: No, the anodized layer is thin (15–25 microns) and provides surface protection without altering dimensions or mechanical properties. It enhances corrosion resistance and aesthetic appearance. -
Q: What is the maximum misalignment allowed for the flexible version?
A: This depends on the size. Typically, angular misalignment up to 1°, parallel misalignment up to 0.2 mm, and axial misalignment up to 0.3 mm are acceptable. Exact values are provided in our technical datasheet. -
Q: Is this coupling suitable for high-torque servo motors?
A: Yes, the rigid version is ideal for high-torque, zero-backlash applications. The flexible version is better for lower torque requirements where misalignment compensation is needed. Check the torque ratings in the table above. -
Q: How do I install the coupling?
A: First, clean the shaft ends and bore. Loosen the clamping screws, slide the coupling onto both shafts, align, and then tighten the screws to the recommended torque (provided in the user manual). For rigid couplers, ensure no misalignment remains. -
Q: Do you offer samples for testing?
A: Yes, we provide sample orders. Minimum order quantity for samples is 1 piece. Please contact our sales team for sample pricing and shipping details. -
Q: What is the delivery time?
A: For standard sizes (2-10mm bore), stock items can ship within 3-5 working days. Custom sizes require 7-15 working days, depending on quantity.
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