FAG 32315-B tapered roller bearing
- Brand
- FAG
- Category
- Bearings
- Subcategory
- Tapered roller bearings
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Decoding FAG 32315-B
- 323Series
- Tapered roller bearings, 323 series. Series differ in outside diameter and width even when the bore is the same.
- 15Bore
- Bore 75 mm (15 × 5).
- BSuffix
- FAG suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
32315 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
FAG 32315-B measures 75 mm across the bore and 160 mm across the outside diameter; its total width is 58 mm (75 x 160 x 58 mm).
FAG 32315-B belongs to tapered 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 32315-B and any equivalents.
FAG tapered roller bearings in the -B series are built for arrangements that carry radial and axial loads at the same time. The tapered geometry of rollers and raceways spreads the load across a wider contact area than ball bearings, so these bearings suit demanding duty. They appear in gearboxes, wheel axles and other industrial equipment where motion has to be precise and the shaft must stay rigid.
A part number in this line pairs a base number with the -B suffix, as in 322/28-B or 32305-B. The digits set the size and the series proportion; the B at the end marks a change in contact angle or internal execution relative to the standard version. You can see the pattern in 32306-B and 32307-B: as the number rises, so does load capacity. Use the manufacturer's dimension table to read each designation correctly.
These bearings show up in gearboxes, reducers, road machinery axles, transport equipment and roller systems. Because they take combined loads, they fit assemblies where the shaft has to remain rigid and aligned, such as milling machine spindles or overhead cranes. They are common in heavy machinery maintenance and equipment manufacturing.
When selecting a bearing, look at radial and axial load, rotation speed and lubrication type. Sealing may be open or with seals, depending on the environment. Fitting calls for precise alignment and correct adjustment of axial clearance, usually set with lock nuts or shims. Use the grease or oil the manufacturer recommends. Poor assembly can shorten service life, so follow the technical instructions and use suitable tools.
Tapered roller bearings are made to international standards, so brands can be interchanged when dimensions and tolerances match. FAG, SKF, NSK, Timken and others offer equivalent products, but check the part number and specifications before replacing. Suffixes are not the same across manufacturers, so compare the full designation. If in doubt, send us the original part number and we will help you find the equivalent.
For a quote on FAG tapered roller bearings, send the part number or model on WhatsApp or by email. We reply promptly with the information your application needs, and we can advise on assembly, lubrication and suitable options.
Dimensions
75 x 160 x 58 mm (d x D x T): boundary dimensions for basic designation 32315, according to ISO 355.
- Bore
- 75mm
- Outside diameter (D)
- 160mm
- Total width (T)
- 58mm
SKF and other brands, same size
Other brands' pages with basic designation 32315: 75 x 160 x 58 mm (d x D x T) per ISO 355.
- Need the SKF 32315? We can also quote:3231532315 B/CL7C
- NSK32315 CA
- NTN32315U2GD32315CU5GD
- RKB32315
- TIMKEN32315
What they share are the ISO 355 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 32315-B bearing: what are its dimensions?
- FAG 32315-B measures 75 mm across the bore and 160 mm across the outside diameter; its total width is 58 mm (75 x 160 x 58 mm). Those are the boundary dimensions standardized in ISO 355 for basic designation 32315.
- What does the -B suffix mean in these bearings?
- The -B suffix points to a modified internal design, often a different contact angle from the standard version. That can affect axial load capacity. For the exact meaning on a given part number, check the manufacturer's data sheet or send us the model.
- How do I choose between a tapered roller bearing and a ball bearing?
- Tapered roller bearings handle higher combined loads and give more rigidity, but they are less suited to very high speeds. If your application has significant radial and axial loads, the tapered type is usually the better choice. Also consider the available space and the type of assembly.
- Can I replace a FAG bearing with another brand?
- Yes, provided dimensions and tolerances match. Brands such as SKF, NSK or Timken have equivalents, but suffixes may differ. Always verify the full designation and the service conditions. If you need help, send us the part number and we will advise you.