SKF 6303-2RSH/C3HT 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 6303-2RSH/C3HT
- 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.
- 2RSH/C3HTSuffix
- 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 6303-2RSH/C3HT 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 6303-2RSH/C3HT 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 6303-2RSH/C3HT and any equivalents.
The SKF 2RSH/C3HT deep groove ball bearing handles radial and axial loads in hot-running equipment. Its contact seals and increased internal clearance suit ovens, industrial fans and continuous process lines. MR Industrial Accessories supplies this series to customers across the United States and Latin America.
Each element of the code tells you what the bearing is built for. 2RSH means two synthetic rubber contact seals, one per side, holding grease in and keeping contaminants out. C3 is an internal radial clearance above normal, which gives room for thermal expansion. HT confirms the lubricant and seals are rated for high temperatures. A code like 6004-2RSH/C3HT therefore breaks down as: deep groove ball bearing, 60 series, 20 mm bore, sealed, C3 clearance, high-temperature execution.
These bearings appear where heat drives the maintenance decision: induced draft fans, industrial ovens, dryers, boilers, and process equipment in chemical, food and ceramic plants. Electric motors in hot areas, thermal fluid pumps and conveyors near heat sources also use them. Because the lubricant and seals hold up at elevated temperatures, they fit maintenance programs in plants that cannot afford unplanned stops.
Selection starts with the real operating temperature and the load type. C3 clearance matters when the shaft and housing see a significant thermal gradient, since it keeps the bearing from becoming preloaded and failing early. During mounting, check alignment between shaft and housing, and use adjustment methods that do not damage the seals. The grease is set at the factory, so avoid mixing with other greases. In very dirty environments, consider extra protection.
Equivalents exist across brands, but nomenclatures differ: some makers list suffixes such as 2RS, C3 and HT separately or in other combinations. Before substituting one brand for another, confirm the critical dimensions and the service conditions. MR Industrial Accessories can advise on interchangeability based on the exact code and your equipment.
To request a quote for an SKF 2RSH/C3HT series bearing, send the complete part number by WhatsApp or email. The team replies promptly with the technical information you need to proceed with maintenance, and can suggest equivalents when required.
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 6303-2RSH/C3HT bearing: what are its dimensions?
- SKF 6303-2RSH/C3HT 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 HT suffix indicate on an SKF bearing?
- HT means the bearing is prepared for high temperatures: the lubricant, the seals and the heat treatment of the steel are suitable for operating above conventional temperature ranges without losing performance.
- When should I choose a bearing with C3 clearance?
- C3 clearance is advisable when temperature differences between shaft and housing will occur, because it compensates for thermal expansion. It also helps in applications where a looser fit is needed to avoid excessive preload.
- Can I replace an SKF 2RSH/C3HT bearing with another brand?
- Yes, provided the dimensions and service conditions are checked. Other brands may offer bearings with equivalent characteristics, but confirm that internal clearance, sealing type and permissible temperature are compatible.