NTN 32215U4DC tapered roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Tapered roller bearings
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Decoding NTN 32215U4DC
- 322Series
- Tapered roller bearings, 322 series. Series differ in outside diameter and width even when the bore is the same.
- 15Bore
- Bore 75 mm (15 × 5).
- U4DCSuffix
- NTN suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
32215 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
NTN 32215U4DC measures 75 mm across the bore and 130 mm across the outside diameter; its total width is 33.25 mm (75 x 130 x 33.25 mm).
NTN 32215U4DC 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 32215U4DC and any equivalents.
Tapered roller bearings handle radial and axial forces together, because the rollers sit at an angle and the raceways are tapered. This design suits equipment that needs high load capacity and stiffness, such as gearboxes, wheel hubs and industrial machinery. MR Industrial Accessories LLC supplies the NTN line to customers across the United States, Canada, Mexico and South America, and our team can help you confirm the right part number.
NTN part numbers mix digits and letters to describe dimensions and options. Take 32215U4DC from the range we offer: the leading digits set the size and dimensional series; U4 points to a special cage or tolerance variant; DC means a duplex arrangement, where two bearings are matched to take axial loads in both directions. If any code is unclear, our technicians can walk you through it.
These bearings appear in many sectors, including metallurgy, food processing, mining and oil. You will find them in reducers, gearboxes, machine tool spindles, conveyor rollers and vehicle axles. Their capacity for combined loads and their stiffness make them a fit for tough conditions where precision and durability matter.
When choosing a bearing, consider load size and direction, rotation speed and the operating environment. During installation, alignment and lubrication must be handled with care; grease or oil may be used, depending on the application. Sealing is critical to keep lubricant in and contaminants out, so review the seal type if the equipment runs in dirty or wet areas. Poor assembly can shorten bearing life.
Tapered roller bearings can be swapped between brands when the main dimensions and raceway angle match. If you have a part number from another manufacturer, we can find the corresponding NTN equivalent. We can also advise on tolerances and internal clearance to make the replacement dependable. Feel free to ask about any part number or size you need.
MR Industrial Accessories LLC is ready to help you source the right bearing for your application. Send the part number or measurements through WhatsApp or email and we will quote it promptly. For technical support, our team can assist with selection and installation.
Dimensions
75 x 130 x 33.25 mm (d x D x T): boundary dimensions for basic designation 32215, according to ISO 355.
- Bore
- 75 mm
- Outside diameter (D)
- 130mm
- Total width (T)
- 33.25mm
SKF and other brands, same size
Other brands' pages with basic designation 32215: 75 x 130 x 33.25 mm (d x D x T) per ISO 355.
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
- NTN 32215U4DC bearing: what are its dimensions?
- NTN 32215U4DC measures 75 mm across the bore and 130 mm across the outside diameter; its total width is 33.25 mm (75 x 130 x 33.25 mm). Those are the boundary dimensions standardized in ISO 355 for basic designation 32215.
- What do the U4 and DC suffixes mean on an NTN bearing?
- U4 denotes a special execution variant, possibly related to the cage or specific tolerances. DC indicates a duplex arrangement, meaning two bearings are paired to handle axial loads in both directions. Contact us with the exact part number for detailed advice.
- How can I tell if a tapered roller bearing fits my equipment?
- Check the bore, outer diameter, width and raceway angle. If you provide the original part number or measurements, we can identify the NTN equivalent and quote the correct part.
- What lubrication is best for tapered roller bearings?
- It depends on speed, temperature and environment. Grease or oil can be used, but maintaining a proper lubricating film is essential. For contaminated conditions, we suggest lubricants with EP additives and effective sealing.