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Help CenterCross Roller Bearing RA Series RA10008 With 8mm Roller Diameter for Precision Positioning
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Henan San Kuang Machinery Technology Co., Ltd., established in 2014, is a professional manufacturer of high-precision bearings with a factory size of 10,000-30,000 square meters. Our Cross Roller Bearing RA Series RA10008 features an 8mm roller diameter, specifically designed for precision positioning applications. This bearing combines superior rigidity, compact design, and excellent rotational accuracy, making it an ideal choice for demanding industrial environments.
The RA10008 is a cross roller bearing where cylindrical rollers are arranged perpendicularly in a raceway, allowing it to handle radial, axial, and moment loads simultaneously. This unique structure delivers exceptional stiffness and high load capacity in a compact footprint. Below we detail its key features and specifications.
Key Features & Specifications
- Roller Diameter: 8mm – ensures high load distribution and smooth rotation.
- Cross Roller Arrangement: Alternating rollers at 90° provide high rigidity and moment load capacity.
- Precision Grade: Available in P2, P4, P5 (customizable to meet your accuracy requirements).
- Material: Made from high-quality bearing steel (GCr15 or equivalent) with heat treatment for durability.
- Sealing Options: Contact or non-contact seals available to protect against contaminants.
- Lubrication: Pre-lubricated with lithium grease; options for oil or special grease on request.
- Temperature Range: -30°C to +120°C (standard); extended range optional.
| Parameter | RA10008 Typical Values |
|---|---|
| Outer Diameter (D) | 100 mm (customizable) |
| Inner Diameter (d) | 80 mm (customizable) |
| Width (B) | 20 mm (customizable) |
| Basic Dynamic Load Rating (Cr) | ~45 kN (depending on version) |
| Basic Static Load Rating (Cor) | ~60 kN |
| Limiting Speed (grease) | ~2000 rpm |
Benefits for Precision Positioning: The RA10008 cross roller bearing delivers minimal runout and high rotational accuracy, essential for CNC machine tools, rotary tables, indexing tables, medical equipment, and robotics. Its high stiffness ensures stable positioning under heavy loads, while the compact design saves space in assemblies.
Quality Assurance: Our manufacturing facility is ISO9001 certified, and we adhere to strict quality control processes. Each bearing undergoes dimensional inspection, noise testing, and preload measurement to ensure consistent performance.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between RA series and other cross roller bearings?
A: The RA series is designed for applications requiring moderate to high precision with compact dimensions. The RA10008 specifically uses 8mm rollers to balance load capacity and size. -
Q: Can I get the bearing with different inner or outer diameters?
A: Yes, we offer customization for bore, outer diameter, and width. Please contact us with your requirements. -
Q: What is the typical lead time for RA10008?
A: Standard models are usually in stock with lead time of 7-15 days. Custom orders may take 20-30 days depending on complexity. -
Q: Does the bearing come pre-lubricated?
A: Yes, it is pre-lubricated with high-quality lithium grease. Alternative lubrication options are available upon request. -
Q: What is the maximum operating temperature?
A: Standard version can operate from -30°C to +120°C. High-temperature versions (up to 200°C) are available on request. -
Q: Is this bearing suitable for vacuum environments?
A: Yes, we can supply special seals and lubricants for vacuum or cleanroom applications. Please specify your environment. -
Q: What certifications do you have for quality?
A: Our factory holds ISO9001, ISO14000, OHSAS18001, and other certifications. We also comply with QS9000 and TS16949 standards for automotive applications. -
Q: How do I place an order for RA10008?
A: You can send inquiry via our website or email. Provide quantity, required precision grade, and any customization. Our sales team will respond within 24 hours.
Trust and Reliability: With over 10 years of experience, Henan San Kuang Machinery Technology Co., Ltd. has served customers across North America, Europe, Southeast Asia, and other major markets. Our annual export value ranges from US$2.5 Million to US$5 Million, and we ship from major ports including Shanghai, Qingdao, and Tianjin. Our 51-100 dedicated employees ensure every product meets rigorous quality standards.
Choose the RA10008 cross roller bearing for your precision positioning needs. Contact us today for a quote or technical consultation. We are committed to delivering high-performance bearings that enhance your equipment’s accuracy and reliability.
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