SKF 6308-2ZNRJ deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Other brands for this category
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Decoding SKF 6308-2ZNRJ
- 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).
- 2ZNRJSuffix
- 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 6308-2ZNRJ 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 6308-2ZNRJ 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 6308-2ZNRJ and any equivalents.
The SKF ZNRJ series deep groove ball bearing is a single-row design that comes with a sheet metal cage, metallic shields, and a locating ring with a shoulder. It handles moderate radial and axial loads in equipment that requires basic axial positioning and protection against dust and moisture. MR Industrial Accessories supplies this line to plants, workshops, and maintenance operations across the United States and in several Latin American countries.
The ZNRJ suffix breaks down as follows: Z for metallic shields on both sides, N for the locating ring groove, R for the ring itself, and J for the steel sheet metal cage. Take the 6308-2ZNRJ as an example: the base number sets the bearing size, while the suffixes indicate the sealing arrangement and the axial locating feature. Understanding this structure helps you read the full part number before you order a replacement.
You will find this bearing in electric motors, centrifugal pumps, fans, conveyors, and machine tools. In industrial settings, it is common in production lines, refrigeration equipment, and transmission systems where simple axial retention and contaminant protection are needed. The locating ring simplifies mounting in housings without a shoulder, which cuts machining work and speeds up maintenance.
When selecting a bearing, check that the housing has the correct groove for the locating ring and that the axial load falls within this design's limits. The Z shields keep out dust and splashes, but they are not a substitute for a radial shaft seal in wet environments. Factory lubrication typically covers standard applications; for high temperature or speed, consider a different grease. Make sure shaft and housing are properly aligned to avoid unnecessary stresses.
For equivalences, deep groove ball bearings with similar suffixes from other brands may be interchangeable if the main dimensions, internal clearance, and sealing type match. Matching the base part number alone is not enough; tolerances and execution must also be compared. Consulting a specialist to validate the application is the safest approach. At MR Industrial Accessories, we can assist if you provide the dimensions or the full part number of the original bearing.
To replace an SKF ZNRJ series deep groove ball bearing, send the part number via WhatsApp or email to MR Industrial Accessories. With the equipment details and a photo of the part, we help you confirm the correct variant and request a quote.
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.
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 6308-2ZNRJ bearing: what are its dimensions?
- SKF 6308-2ZNRJ 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 ZNRJ suffix mean on an SKF bearing?
- Z stands for metallic shields, N for the groove for the locating ring, R for the presence of that ring, and J for the steel sheet metal cage. Together they indicate a sealed bearing with built-in axial location.
- Can this bearing handle axial loads?
- Yes, it accommodates moderate axial loads in both directions due to its single-row design. For higher axial loads, consider other configurations such as angular contact or roller bearings.
- How do I request a quote for an SKF ZNRJ bearing?
- Contact us via WhatsApp or email with the full part number, for example 6308-2ZNRJ, or with the main dimensions. At MR Industrial Accessories, we confirm the variant and provide a quote.