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NTN tapered roller bearings, 322 series: dimensions and part numbers

The NTN 322 series of tapered roller bearings brings together 22 part numbers in our catalogue across 22 basic sizes, from 32212 to 32248: bore (d) from 60 to 240 mm and outside diameter (D) from 110 to 250 mm. Every part number in the table links to its own page, where you can request a quote via WhatsApp or email.

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322 series dimension table

NTN tapered roller bearings, 322 series: boundary dimensions in millimetres according to ISO 355 and catalogue part numbers.
Basic designationdDTSame sizeVariants
322126011029.7560x110x29.75
322136512032.7565x120x32.75
322147012533.2570x125x33.25
322157513033.25
322168014035.2580x140x35.25
322178515038.585x150x38.5
322189016042.590x160x42.5
322199517045.5
3222010018049100x180x49
3222110519053
3222211020056
3222412021561.5
3222613023067.75
3222814025071.75
32230150Dimension not validatedDimension not validated
32232160Dimension not validatedDimension not validated
32234170Dimension not validatedDimension not validated
32236180Dimension not validatedDimension not validated
32238190Dimension not validatedDimension not validated
32240200Dimension not validatedDimension not validated
32244220Dimension not validatedDimension not validated
32248240Dimension not validatedDimension not validated

Every part number in this series carries a suffix after the basic designation. The most frequent NTN suffixes, with the number of sizes they appear in: U (9), U3EC (5), UUTG (5), UTG (2), and U4DC (1). The suffix defines the variant (sealing, cage, internal clearance or other options): to request a quote, send us the full part number marked on the bearing, the box or the drawing.

How to read the part number: 322 gives the bearing type and the dimension series; for the same bore, each series has a different outside diameter and width. What follows is the bore code: from 04 upwards, multiplying by 5 gives the bore in millimetres (in the 32212, 12 × 5 = 60 mm).

The table gives the boundary dimensions of each basic designation according to ISO 355, in millimetres: d is the bore, D the outside diameter and T the total width. These are standardised dimensions: the same basic designation has the same dimensions in every brand. Where a dash appears, the dimension has not been validated yet: we confirm it when we quote.

If the part number on the bearing can no longer be read, measure the bore, the outside diameter and the total width, and find the matching row: with that size and the variant you need, we will quote it.

Other NTN tapered roller bearings series

Which NTN 322 series bearing do you need?

Send us the full part number, or the size and the variant, with the quantity: we will quote it via WhatsApp or email.

See all NTN bearings references →

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