SKF 6303 2RSNRJEM deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Decoding SKF 6303 2RSNRJEM
- 63Series
- Deep groove ball bearings, 63 series. Series differ in outside diameter and width even when the bore is the same.
- 03Bore
- Bore 17 mm: by standard, 03 designates 17 mm.
- 2RSNRJEMSuffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
6303 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 6303 2RSNRJEM measures 17 mm across the bore and 47 mm across the outside diameter; its width is 14 mm (17 x 47 x 14 mm).
SKF 6303 2RSNRJEM 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 6303 2RSNRJEM and any equivalents.
This SKF single-row deep groove ball bearing carries the 2RSNRJEM suffix, which points to a sealed design and internal refinements. It handles moderate radial and axial loads where friction needs to stay low and reliability matters. The sealing arrangement suits areas with a moderate level of contamination, helping to cut maintenance work over time.
The basic number tells you the size and series. Examples include 6003, 6200, 6201, 6203 and 6303. Series 60 is an extra-light section, 62 is light and 63 is medium. The suffix 2RSNRJEM adds several traits: 2RS means sealing on both sides, NR points to a retaining ring (though here it can be part of the combined code), J is a stamped steel sheet cage, E stands for improved load capacity and M covers internal modifications such as special radial clearance or high-quality lubrication. These letters let the bearing fit particular operating conditions.
You will find these bearings in electric motors, centrifugal pumps, fans, conveyors, machine tools, packaging equipment and transmission systems. Industries such as food, chemical, textile, automotive and metallurgical rely on them for their versatility and resistance. Because they take combined loads and run at moderate speeds, they suit rotating equipment that needs dependable operation and low maintenance.
When choosing a 2RSNRJEM bearing, look at the radial and axial load, the speed and the environment. The 2RS seal keeps out dust and moisture, but if aggressive liquids are present, consider extra seals. The J steel cage is standard and works for most applications. At mounting, check that shaft and housing are precisely aligned, and apply the recommended lubricant (lithium grease or similar) without overfilling. Poor fitting can lead to noise, vibration and early failure.
For equivalents, SKF bearings with the 2RSNRJEM suffix can be swapped with other brands that match the same dimensions, sealing and clearance. Not every maker offers the exact same mix of features. When hunting a replacement, confirm the basic number (6203, for instance) and the equivalent suffixes: 2RS for double sealing, C3 for increased clearance, and so on. Use interchangeability tables or ask a specialist to be sure of compatibility.
More SKF versions in the 6303 series
SKF lists these 6303 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 6303 N
- SKF 6303 NR
Dimensions
17 x 47 x 14 mm (d x D x B): boundary dimensions for basic designation 6303, according to ISO 15.
- Bore
- 17mm
- Outside diameter (D)
- 47mm
- Width (B)
- 14mm
Same size, other brands
Other brands' pages with basic designation 6303: 17 x 47 x 14 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 6303 2RSNRJEM bearing: what are its dimensions?
- SKF 6303 2RSNRJEM measures 17 mm across the bore and 47 mm across the outside diameter; its width is 14 mm (17 x 47 x 14 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 6303.
- What does the 2RSNRJEM suffix mean on an SKF bearing?
- The suffix 2RSNRJEM covers sealing on both sides (2RS), a retaining ring (NR), a steel sheet cage (J), improved load capacity (E) and internal modifications (M). Each letter tailors the bearing to specific working conditions.
- Is this bearing interchangeable with other brands?
- Yes, provided the other brand's bearing has the same dimensions and sealing and clearance specifications. Check the basic number and equivalent suffixes. To ensure compatibility, consult our technical team.
- How should I mount a sealed deep groove ball bearing?
- During mounting, ensure precise alignment between shaft and housing. Apply the recommended lubrication without exceeding the quantity. Avoid direct blows on the seals and use the appropriate tools so as not to damage the bearing. If you have doubts, contact us.