SKF 6308-2RS1NTN9/C4 deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Decoding SKF 6308-2RS1NTN9/C4
- 63Series
- Deep groove ball bearings, 63 series. Series differ in outside diameter and width even when the bore is the same.
- 08Bore
- Bore 40 mm (08 × 5).
- 2RS1NTN9/C4Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
6308 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 6308-2RS1NTN9/C4 measures 40 mm across the bore and 90 mm across the outside diameter; its width is 23 mm (40 x 90 x 23 mm).
SKF 6308-2RS1NTN9/C4 belongs to deep groove ball bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 6308-2RS1NTN9/C4 and any equivalents.
The SKF 6308-2RS1NTN9/C4 is a single-row deep groove ball bearing designed to handle radial and axial loads in industrial equipment. Its 2RS1 suffix indicates rubber seals on both sides, and the C4 suffix denotes internal clearance greater than normal. This bearing is commonly found in electric motors, pumps, fans, and conveyors. At MR Industrial Accessories, we supply this SKF bearing and help you confirm the right sealing and clearance for your application.
The part number breaks down into key specifications. The 6308 indicates the dimension series, 2RS1 means rubber seals on both sides, and C4 specifies increased internal clearance. NTN appears in the designation, but the bearing is supplied by SKF. Understanding these codes ensures you select a bearing that fits your shaft and housing requirements.
Typical applications include electric motors, gearboxes, centrifugal pumps, compressors, conveyor belts, and machine tools. The bearing's ability to support combined loads and operate at high speeds makes it versatile across food processing, chemical plants, metalworking, and maintenance workshops. In dusty or humid environments, the 2RS1 seals provide essential protection against contaminants.
When choosing a deep groove ball bearing, consider load, speed, and environmental conditions. The 2RS1 sealing offers good protection against dust and moisture, while open or metal-shielded versions suit cleaner environments. C4 clearance is specified for high-temperature operation or interference fits. Proper mounting ensures alignment between shaft and housing, and lubrication must match the working temperature. Incorrect mounting can shorten bearing life.
Deep groove ball bearings follow international dimension standards, so different brands can be interchanged if dimensions and suffixes match. However, always verify tolerances and internal clearance, as they can vary between manufacturers. Sealing and clearance codes are not universal; confirm the full designation before substituting. At MR Industrial Accessories, we can help you find the right replacement for your original bearing.
To request a quote, send the full part number via WhatsApp or email. Our team responds promptly and can suggest equivalents or assist with selection.
Dimensions
40 x 90 x 23 mm (d x D x B): boundary dimensions for basic designation 6308, according to ISO 15.
- Bore
- 40mm
- Outside diameter (D)
- 90mm
- Width (B)
- 23mm
Same size, other brands
Other brands' pages with basic designation 6308: 40 x 90 x 23 mm (d x D x B) per ISO 15.
- FAG6308-C-2HRS6308-C6308-C-2Z
- KOYO6308
- NSK63086308 ZZ
- NTN6308LLB6308LLH6308LLU4 more →
- RKB6308
- TIMKEN6308
What they share are the ISO 15 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- SKF 6308-2RS1NTN9/C4 bearing: what are its dimensions?
- SKF 6308-2RS1NTN9/C4 measures 40 mm across the bore and 90 mm across the outside diameter; its width is 23 mm (40 x 90 x 23 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 6308.
- What does the 2RS1 suffix mean on this SKF bearing?
- 2RS1 indicates rubber seals on both sides of the bearing, providing an effective barrier against dust, dirt, and moisture. This makes it suitable for contaminated environments, though it may reduce the maximum permissible speed compared to open versions.
- How do I choose between normal clearance and C4?
- C4 clearance is greater than normal and is recommended for high-temperature operation or when interference fits reduce internal clearance. For standard applications, normal clearance is often sufficient. Contact us to evaluate your specific case.
- Can I replace an SKF bearing with another brand?
- Yes, if the main dimensions and the sealing and clearance suffixes match. International standards ensure dimensional interchangeability, but always verify tolerances and internal clearance, as they can vary between manufacturers. We help you find the right equivalent.