FAG 23938-S-MB spherical roller bearing
- Brand
- FAG
- Category
- Bearings
- Subcategory
- Spherical roller bearings
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Decoding FAG 23938-S-MB
- 239Series
- Spherical roller bearings, 239 series. Series differ in outside diameter and width even when the bore is the same.
- 38Bore
- Bore 190 mm (38 × 5).
- S-MBSuffix
- FAG suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
23938 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
FAG 23938-S-MB measures 190 mm across the bore and 260 mm across the outside diameter; its width is 52 mm (190 x 260 x 52 mm).
FAG 23938-S-MB 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 23938-S-MB and any equivalents.
The FAG 23936-S-MB, 23938-S-MB and 23940-S-MB are double-row self-aligning spherical roller bearings. They carry heavy radial loads together with axial loads in either direction, and they tolerate shaft deflection and seat inaccuracies that would trouble a rigid bearing. MR Industrial Accessories LLC supplies this line to maintenance and purchasing teams throughout the United States and in several Latin American countries, and helps pinpoint the right code for each application.
Reading the code is the fastest way to know what you are ordering. The leading digits set the size and dimension series, so 23936, 23938 and 23940 differ only in size. The S suffix marks an outer ring with a lubrication groove and holes. The MB suffix identifies a solid brass cage guided by the inner ring. Same construction, three sizes.
These bearings suit mining, cement, steel, paper and aggregate processing equipment, as well as gearboxes, conveyors, mills, screens and other continuous-duty machines. Where loads run high and alignment is never perfect, the self-aligning behavior pays off on long or flexing shafts and on housings whose seating face is not truly square.
Selection comes down to radial load, axial load, speed and shaft diameter. The S feature makes relubrication in service practical, which matters in dusty or damp areas where grease breaks down. The MB brass cage holds up under demanding duty. At installation, check alignment first, use the correct tools, and pick a lubricant matched to the temperature and speed of the application.
Equivalent designations exist across several brands. Interchangeability can be assessed, but tolerances, internal clearance and cage style deserve a check before substituting. Main dimensions alone do not tell the whole story; the suffix and internal execution decide how the bearing behaves on the job. If you are replacing an existing unit, ask about equivalent options.
Have the code in hand? Send it by WhatsApp or email and the team will come back with a quote. Can't find it? Share the equipment model or the shaft dimensions and they will help identify the bearing. They also suggest equivalents and assist with the final choice.
Dimensions
190 x 260 x 52 mm (d x D x B): boundary dimensions for basic designation 23938, according to ISO 15.
- Bore
- 190mm
- Outside diameter (D)
- 260mm
- Width (B)
- 52mm
SKF and other brands, same size
Other brands' pages with basic designation 23938: 190 x 260 x 52 mm (d x D x B) per ISO 15.
- Need the SKF 23938? We can also quote:23938 CC/W3323938 CCK/W3323938 CC/C3W33
- NSK23938CAME423938CAMKE4
- NTN23938EMD123938EMKD1
- RKB23938
- TIMKEN23938EM
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 23938-S-MB bearing: what are its dimensions?
- FAG 23938-S-MB measures 190 mm across the bore and 260 mm across the outside diameter; its width is 52 mm (190 x 260 x 52 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 23938.
- What does the S suffix indicate on these bearings?
- It means the outer ring carries a lubrication groove and holes, so the bearing can be regreased while it is in service. That helps in applications with heavy load or contaminated surroundings, where the lubricant loses effectiveness over time.
- Why choose the MB cage version?
- MB is a solid brass cage guided by the inner ring. It is specified for severe duty, high speeds or heavy loads, since it is stronger and more stable than a sheet metal cage, and it holds up well in continuous operation.
- How do I get a quote for a spherical roller bearing?
- Send the full code, such as 23936-S-MB, through WhatsApp or email, or provide the shaft dimensions and equipment model. The team replies promptly and can point you to the right option for your application.