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Help CenterCrossed Roller Bearing for CNC Machine Tool Rotary Axis and Medical Equipment
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Henan San Kuang Machinery Technology Co., Ltd. has been a trusted manufacturer of precision bearings since 2014, with a factory spanning 10,000-30,000 square meters and an annual export value of US$2.5-5 million. Our Crossed Roller Bearing is specifically engineered for high-precision applications such as CNC machine tool rotary axes and medical equipment, delivering exceptional rigidity, rotational accuracy, and compact design. This bearing combines the benefits of a compact cross-section with the ability to handle combined loads, making it the ideal choice for demanding motion control systems.
Our Crossed Roller Bearings are manufactured under strict quality management systems certified by ISO9001, ISO14001, OHSAS18001, and other international standards. With a team of 51-100 skilled employees, we ensure each bearing meets the highest levels of precision and reliability. Below, we detail the key features, technical specifications, and advantages that set our product apart.
Key Features & Benefits
- High Rigidity & Load Capacity: Crossed roller design allows the bearing to support radial, axial, and moment loads simultaneously, ideal for rotary axes under heavy cutting forces.
- Exceptional Rotational Accuracy: Precision grinding and assembly ensure runout accuracy up to P2 grade, critical for medical imaging devices and CNC positioning.
- Compact & Space-Saving: The thin cross-section reduces overall equipment size, enabling more compact machine designs.
- Low Friction & Smooth Operation: Rollers are arranged alternately at 90° with spacers, minimizing friction and heat generation.
- Long Service Life: Made from high-grade bearing steel (GCr15) with optional heat treatment and surface coating for corrosion resistance.
- Customizable Options: Available in various sizes, preload levels, and lubrication methods to match specific application requirements.
Technical Specifications
| Parameter | Range / Options |
| Inner Diameter (d) | 50 – 500 mm (customizable) |
| Outer Diameter (D) | 100 – 600 mm (customizable) |
| Width (B) | 10 – 50 mm (customizable) |
| Accuracy Grade | P2, P4, P5 (ISO or JIS standard) |
| Preload | Light, Medium, Heavy (adjustable) |
| Lubrication | Grease or oil, sealed or open |
| Operating Temperature | -30°C to +120°C (standard) |
| Material | Bearing steel GCr15 (or stainless steel on request) |
Detailed Advantages for CNC & Medical Applications
For CNC machine tool rotary axes, our crossed roller bearing provides the stiffness needed to maintain positioning accuracy under high torque and repetitive cycles. The preload options allow engineers to fine-tune the bearing for either maximum rigidity or minimal friction, depending on the machining operation. In medical equipment such as CT scanners, MRI gantries, and surgical robots, the bearing’s low noise, low vibration, and high precision contribute to clear imaging and smooth motion. The compact design also helps reduce the overall weight and footprint of medical devices.
We offer customization for special dimensions, integrated seals, and special coatings (e.g., black oxide or anti-corrosion) to meet OEM requirements. Each bearing undergoes rigorous inspection including dimensional measurement, noise testing, and torque verification before shipment.
Trust & Assurance
As a company with over 10 years of experience and multiple certifications including ISO9001, ISO14001, OHSAS18001, HACCP, TL900, QS9000, SA8000, ISO17799, ISO10441, ISO16949, TS16969, ISO19011:2000, and others, we are committed to delivering reliable products. Our factory is located in Luoyang, Henan, the heart of China’s bearing industry, giving us access to premium raw materials and skilled labor. We export to North America, South America, Europe, Asia, Africa, Oceania, and the Middle East, shipping from major ports including Shanghai, Qingdao, Tianjin, and Lianyungang.
We invite you to experience the quality and performance of our Crossed Roller Bearings. Contact us today for a quote or to discuss your specific application. Our engineering team is ready to support you with technical drawings and installation guidance.
Frequently Asked Questions
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Q: What is the typical lifespan of a crossed roller bearing?
A: Under proper lubrication and load conditions, the service life can exceed 10,000 hours. We can provide L10 life calculations based on your specific application parameters. -
Q: Can I use this bearing in a vertical rotary axis?
A: Yes, crossed roller bearings are well-suited for vertical axes. Our design includes options for integrated seals to prevent lubricant leakage. -
Q: What is the difference between crossed roller and standard ball bearings for rotary tables?
A: Crossed roller bearings offer higher rigidity and moment load capacity, making them more suitable for heavy-duty CNC machining. Ball bearings are generally more cost-effective for lighter loads. -
Q: Do you provide custom sizes or special materials?
A: Yes, we offer customization for inner/outer diameters, width, preload, and materials (e.g., stainless steel, ceramic rollers). Please contact us with your drawings. -
Q: How should I install a crossed roller bearing?
A: Installation requires careful alignment and proper preload adjustment. We provide an installation manual with each order and can offer technical support via video or on-site if needed. -
Q: What certifications do your bearings have?
A: Our manufacturing process is certified under ISO9001, ISO14001, OHSAS18001, and many other standards. We can also provide material certificates and test reports upon request. -
Q: What is the lead time for a standard order?
A: For standard sizes, lead time is typically 15–30 days depending on quantity. Custom orders may require 30–45 days. -
Q: Can you supply bearings for medical equipment that requires FDA registration?
A: While we do not offer FDA registration directly, our bearings are manufactured in a clean environment and can meet the material and cleanliness requirements of medical devices. Documentation can be provided for your regulatory submission.
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