
FAG 238/630-XL-K-MA1 spherical roller bearing
- Brand
- FAG
- Category
- Bearings
- Subcategory
- Spherical roller bearings
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Decoding FAG 238/630-XL-K-MA1
- 238Series
- Spherical roller bearings, 238 series. Series differ in outside diameter and width even when the bore is the same.
- /630Bore
- Bore: 630 mm.
- XL-K-MA1Suffix
- FAG suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
238/630 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
FAG 238/630-XL-K-MA1 measures 630 mm across the bore and 780 mm across the outside diameter; its width is 112 mm (630 x 780 x 112 mm).
FAG 238/630-XL-K-MA1 belongs to spherical roller 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 238/630-XL-K-MA1 and any equivalents.
FAG spherical roller bearings handle radial and axial loads in both directions while accommodating angular misalignment between shaft and housing. Two rows of spherical rollers run on a spherical outer raceway, so the bearing self-aligns. Typical installations include transmissions, pumps, fans and process machinery where shaft deflection occurs or mounting alignment is not exact. MR Industrial Accessories serves customers across the United States, Canada, Mexico and South America and can help you identify the right variant.
Read the designation in blocks. The main number gives the size and dimension series; the letters after it describe design features. Take 238/630-XL-K-MA1: the numeric prefix sets the series and bore diameter, K means a tapered bore, MA1 is a machined brass cage with outer guidance, and XL identifies the current generation of the product. Send the full code when you request a quote so every suffix can be checked.
These bearings suit equipment where the shaft deflects or the housing lacks rigidity: power transmissions, centrifugal pumps, industrial fans, conveyor belts and continuous process machines. They also appear in mining, cement, steel and aggregate processing plants, where loads are high and service conditions demanding. Because they self-align, they work in mountings that do not provide perfect alignment between supports.
Selection depends on radial and axial load, rotational speed and bore type. A tapered bore version mounts on a tapered shaft or an adapter sleeve, which makes internal clearance adjustment easier. The machined brass cage fits severe conditions and high temperatures. Choose lubrication according to speed and operating temperature, and during installation check alignment and residual clearance so the rollers are not overloaded.
Dimension standards make spherical roller bearings interchangeable between brands: the same size code and equivalent suffixes can be replaced by another manufacturer's part, as long as tolerances, clearance and lubrication conditions are verified. Suffixes are not always equivalent across brands, so compare the complete designation before substituting. MR Industrial Accessories supplies FAG and can advise on the appropriate variant for your equipment.
To request this bearing, send the complete code to MR Industrial Accessories via WhatsApp or email. With the model and application, the technical team reviews the designation and replies promptly with the corresponding alternative. You can also ask about other brands or the associated adapter sleeve.
Dimensions
630 x 780 x 112 mm (d x D x B): boundary dimensions for basic designation 238/630, according to ISO 15.
- Bore
- 630mm
- Outside diameter (D)
- 780mm
- Width (B)
- 112mm
Same size, other brands
Other brands' pages with basic designation 238/630: 630 x 780 x 112 mm (d x D x B) per ISO 15.
- RKB238/630
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
- FAG 238/630-XL-K-MA1 bearing: what are its dimensions?
- FAG 238/630-XL-K-MA1 measures 630 mm across the bore and 780 mm across the outside diameter; its width is 112 mm (630 x 780 x 112 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 238/630.
- What does the suffix K mean in the designation?
- K indicates a tapered bore. The bearing can be mounted on a tapered shaft or an adapter sleeve, which makes internal clearance adjustment easier during installation. This variant is common in equipment that requires precise mounting.
- How do I know if this bearing replaces the one I have installed?
- Compare the complete code, not just the size number. Check bore type, cage and clearance. If all suffixes match, the substitution is direct. If they differ, contact us via WhatsApp with the original code and the application.
- What lubrication is suitable for a spherical roller bearing?
- It depends on speed, temperature and environment. For high speeds, use grease of adequate consistency; at high temperatures, use a synthetic-based lubricant. The amount and frequency of relubrication are defined by the service. Consult the equipment's technical data sheet.

