SKF 6228 MA/C4S1 deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Decoding SKF 6228 MA/C4S1
- 62Series
- Deep groove ball bearings, 62 series. Series differ in outside diameter and width even when the bore is the same.
- 28Bore
- Bore 140 mm (28 × 5).
- MA/C4S1Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
6228 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 6228 MA/C4S1 measures 140 mm across the bore and 250 mm across the outside diameter; its width is 42 mm (140 x 250 x 42 mm).
SKF 6228 MA/C4S1 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 6228 MA/C4S1 and any equivalents.
The SKF MA/C4S1 deep groove ball bearing is built for rotating equipment that carries radial and axial loads in both directions. Its single-row layout, machined brass cage and C4 internal clearance suit high-speed operation and assemblies where thermal expansion must be absorbed. MR Industrial Accessories LLC supplies this bearing line to maintenance and purchasing teams across the United States and Latin America.
Reading the code helps you confirm the right variant. MA means the cage is machined brass and ball-centered, a construction chosen for demanding service. C4 signals internal radial clearance above the standard value, so the bearing tolerates tight interference fits and temperature differences between rings. S1 refers to a special heat treatment that stabilizes the ring for elevated operating temperatures. In the example 6228 MA/C4S1, these features come together in a medium-section bearing.
Typical duty includes centrifugal pumps, induced draft fans, gearboxes and machine tools. The bearing also handles combined loads in large electric motors and reciprocating compressors, and appears in railway and cement industry equipment where reliability matters.
Selection starts with clearance. A C4 bearing needs a mounting fit that accounts for differential expansion between inner and outer rings. The MA cage supports higher speeds than a polyamide cage but depends on proper lubrication. Check housing alignment and avoid excessive pure axial loads. For dusty or wet environments, add seals or specify bearings with protective shields.
Interchange is possible with deep groove ball bearings from other brands when main dimensions, tolerances and clearance match. Lubrication and mounting conditions still drive performance, so verify the replacement against the load and speed requirements of your equipment.
To confirm the exact designation for your application, send the code by WhatsApp or email. The MR team replies promptly, suggests equivalents and helps you choose the right option.
Dimensions
140 x 250 x 42 mm (d x D x B): boundary dimensions for basic designation 6228, according to ISO 15.
- Bore
- 140mm
- Outside diameter (D)
- 250mm
- Width (B)
- 42mm
Same size, other brands
Other brands' pages with basic designation 6228: 140 x 250 x 42 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 6228 MA/C4S1 bearing: what are its dimensions?
- SKF 6228 MA/C4S1 measures 140 mm across the bore and 250 mm across the outside diameter; its width is 42 mm (140 x 250 x 42 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 6228.
- What does the C4 suffix mean in this bearing?
- C4 indicates internal radial clearance greater than standard. It is specified for assemblies with pronounced interference fits or thermal differences between inner and outer rings, preventing the bearing from becoming preloaded.
- Is the MA cage suitable for high speeds?
- Yes, the MA machined brass cage handles high speeds and severe loads. Its ball-centered design reduces friction and improves heat dissipation, but correct lubrication is required for prolonged operation.
- Can I replace this bearing with one from another brand?
- You can replace it if the alternative has the same main dimensions, tolerances and internal clearance. Lubrication and mounting conditions remain critical. Send us the original code and we will help you find the right equivalent.