SKF 6305-2RS1/GFJ deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Decoding SKF 6305-2RS1/GFJ
- 63Series
- Deep groove ball bearings, 63 series. Series differ in outside diameter and width even when the bore is the same.
- 05Bore
- Bore 25 mm (05 × 5).
- 2RS1/GFJSuffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
6305 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 6305-2RS1/GFJ measures 25 mm across the bore and 62 mm across the outside diameter; its width is 17 mm (25 x 62 x 17 mm).
SKF 6305-2RS1/GFJ 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 6305-2RS1/GFJ and any equivalents.
For equipment exposed to heat, dust, or moisture, the SKF RS/GFJ series deep groove ball bearing provides a sealed, ready-to-install solution. These single-row bearings come with dual rubber seals and a factory fill of high-temperature grease, making them a practical choice for electric motors, industrial fans, and process machinery where maintenance access is limited.
Reading the part number helps you confirm you are ordering the right variant. Take 6006-2RS1/GFJ: 6006 sets the size and series, 2RS1 means rubber seals on both sides, and GFJ identifies the high-temperature grease used at the factory. The same pattern applies to 6207-2RS1/GFJ and 6305-2RS1/GFJ—base number for dimensions and load capacity, suffixes for sealing and lubrication.
These bearings suit a range of industries, including food processing, chemical, cement, and metallurgy. They are common in motors, pumps, fans, conveyors, and other process equipment. The combination of contact seals and high-temperature grease makes them appropriate for environments with dust, humidity, or elevated temperatures, where long service life and infrequent maintenance are priorities.
When selecting a bearing, consider load, speed, and operating conditions. The 2RS1 seal keeps contaminants out and grease in, though it may reduce the maximum permissible speed compared to open bearings. GFJ grease is formulated for high temperatures, which helps extend service life in hot applications. During mounting, align the bearing correctly and avoid impacts that could damage the seals. These bearings are lubricated for life and do not require relubrication.
SKF sealed deep groove ball bearings can often be interchanged with equivalent offerings from other manufacturers that use the same base designation and comparable suffixes, such as 2RS or 2RSH. Always check tolerances and grease quality, as these can differ between brands. For critical applications, review the technical data of each option. MR Industrial Accessories supplies SKF and can help you evaluate the best fit for your equipment.
To request a quote for an SKF RS/GFJ series deep groove ball bearing, send the part number via WhatsApp or email. The team responds promptly and can suggest equivalents or assist with selection.
More SKF versions in the 6305 series
SKF lists these 6305 series versions in its catalogs, but they don't have a page on this site. Send us the part number of any of them and we'll find it and quote it.
- SKF 6305 ETN9
- SKF 6305 N
Dimensions
25 x 62 x 17 mm (d x D x B): boundary dimensions for basic designation 6305, according to ISO 15.
- Bore
- 25mm
- Outside diameter (D)
- 62mm
- Width (B)
- 17mm
Same size, other brands
Other brands' pages with basic designation 6305: 25 x 62 x 17 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 6305-2RS1/GFJ bearing: what are its dimensions?
- SKF 6305-2RS1/GFJ measures 25 mm across the bore and 62 mm across the outside diameter; its width is 17 mm (25 x 62 x 17 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 6305.
- What does the GFJ suffix indicate?
- GFJ means the bearing is factory-lubricated with a high-temperature grease, intended for applications where heat is a factor. This supports longer service life and reduced maintenance.
- Can SKF 2RS1/GFJ bearings be relubricated?
- No. These bearings are sealed and lubricated for life. Relubrication is not recommended because the seal blocks access to the interior and attempting it could damage the seals. If relubrication is required, consider open bearings or a different sealing arrangement.
- What is the maximum operating temperature for GFJ grease?
- GFJ grease is designed for high temperatures, typically up to 150 °C in continuous operation, though this can vary with working conditions. For specific applications, consult the product data sheet.