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Help CenterPrecision Ground Rigid Coupling 12mm Bore 0.01mm Tolerance for Servo Motor
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Welcome to Henan San Kuang Machinery Technology Co., Ltd. As a professional manufacturer established in 2022, we take pride in delivering high-precision mechanical components that drive modern automation. Our Precision Ground Rigid Coupling with 12mm bore and 0.01mm tolerance is specifically designed for servo motor applications where zero backlash and accurate motion are critical. With a factory spanning 10,000-30,000 square meters and an annual export value of US$2.5-5 million, we offer reliable products trusted by clients across North America, Europe, and Asia.
This rigid coupling ensures a solid, play-free connection between the servo motor shaft and driven load. The precision ground finish guarantees a consistent fit, while the strict 0.01mm tolerance maintains alignment under high-speed rotations. Whether you are building CNC machines, robotic arms, or packaging equipment, our coupling delivers the accuracy you need.
Key Features & Technical Specifications
- High Precision Tolerance: 0.01mm bore tolerance ensures tight shaft fit and minimal runout.
- Precision Ground Surface: Achieved through fine grinding process for superior concentricity and balance.
- Rigid Design: Ideal for applications requiring exact angular and positional accuracy with no flexibility.
- Material Options: Available in high-strength alloy steel or lightweight aluminum alloy (customizable).
- Customizable Dimensions: Outer diameter, length, and keyway can be tailored to your specifications.
- Surface Treatment: Natural metallic finish or black oxide coating for corrosion resistance.
- Compatibility: Designed for servo motors, stepper motors, encoders, and precision shafts.
The following table provides typical dimensional parameters. Please contact us for custom sizes.
| Parameter | Standard Value | Custom Range |
|---|---|---|
| Bore Diameter | 12 mm | 6 mm - 50 mm (upon request) |
| Outer Diameter | 30 mm (typical) | 20 mm - 80 mm |
| Length | 40 mm (typical) | 20 mm - 100 mm |
| Bore Tolerance | 0.01 mm | 0.005 mm - 0.02 mm |
| Material Hardness (Steel) | HRC 40-45 | HRC 35-50 |
| Surface Roughness | Ra ≤ 0.8 μm | Ra ≤ 0.4 μm (upon request) |
Benefits to Your Application: Using our precision ground rigid coupling directly improves system accuracy, reduces vibration, and extends the life of your servo motor and bearings. The zero-backlash connection ensures that every command from the controller translates exactly into motion, which is essential for high-speed pick-and-place, laser cutting, and 3D printing equipment.
Why Choose Henan San Kuang Machinery?
- Manufacturing Excellence: Our factory occupies 10,000-30,000 m² and is equipped with advanced CNC grinding and turning centers.
- Global Reach: We export to North America, South America, Europe, Southeast Asia, Africa, and Oceania, with annual export value of US$2.5-5 million.
- Skilled Team: 51-100 experienced employees dedicated to quality control and continuous improvement.
- Flexible Shipping: Convenient access to ports of Shanghai, Lianyungang, Qingdao, and Tianjin ensures timely delivery.
- Customer-Centric: We offer rapid sample development and volume production with strict tolerance verification.
Trust in Every Component: Since our founding in 2022, we have built a reputation for reliability and precision. Each coupling undergoes dimensional inspection and surface quality check before shipment. Our clients in over 10 markets rely on us for consistent performance. We invite you to experience the difference that precision ground rigid coupling can make in your machinery.
Contact us today to discuss your specific bore size, keyway, or material requirements. Our engineering team is ready to support your project with custom solutions.
Frequently Asked Questions
-
Q: What is the difference between rigid coupling and flexible coupling?
A: A rigid coupling provides a solid, non-flexible connection, ideal for applications requiring exact shaft alignment and zero backlash. Flexible couplings allow angular or parallel misalignment but introduce some compliance. -
Q: Can I use this coupling with a 12mm servo motor shaft and a 12mm lead screw?
A: Yes, as long as both shafts are 12mm and properly aligned. Our coupling is designed for same-diameter shafts; for different diameters, custom bores are available. -
Q: Does the 0.01mm tolerance apply to both bore ends?
A: Yes, both bores are machined to the same tolerance grade, ensuring concentric alignment. -
Q: Is keyway required? Can I order without keyway?
A: Keyway is optional. Standard couplings can be supplied with or without keyway, depending on your shaft locking preference. Set screw locking is also available. -
Q: What materials do you recommend for high-torque servo applications?
A: For high torque, we recommend alloy steel with surface hardening. For lightweight applications, aluminum alloy is suitable. -
Q: How do I ensure proper alignment during installation?
A: Use a dial indicator to check runout. Our precision ground surfaces help minimize alignment error, but proper mounting is still essential. -
Q: What is the typical lead time?
A: Standard sizes are usually in stock and ship within 5-7 working days. Custom orders require 2-3 weeks depending on complexity. -
Q: Do you provide samples for testing?
A: Yes, we offer sample orders with reasonable lead time. Please contact our sales team for details.
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