32015XU bearing: complete specifications & equivalents

Specification table

Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01

Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the 32015XU model number is decoded

32015XU is the NTN 4T catalogue entry for a 75×115×25 mm metric tapered roller bearing — separable cone and cup, designed for combined radial and axial load as an individually adjusted bearing. The last two digits 15 are the ISO bore code, ×5 = 75 mm (codes 00–03 use the 10/12/15/17 exception table) under the ISO 355 numbering; the 25 mm value printed here is T, the width of the fully assembled cone-plus-cup set, not the inner-ring width alone. The pressed-steel cage and surface-finished roller ends are standard 4T execution; ULTAGE-marked variants use upgraded material and internal geometry aimed at longer rating life with the same ISO 355 envelope. Selection: C 118 kN against C0 167 kN gives a C0/C ratio of 1.42 for the 75 mm bore, and the equivalent combined load must keep below the rating at the target L10 with the pair counted as one unit. Re-adjustment after bedding-in is standard practice: re-check end play once the paired 32015XU arrangement has run in, because initial seat seating relaxes the set preload slightly.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Mount the 75 mm cone by induction heating (max 120 °C) and the cup with a press sleeve; the 912 g ring mass makes cocking during fitting a direct raceway-brinelling risk.
• The thin 25 mm section of 32015XU is built for low friction and tight envelopes, not the heavy preload of a 322/323 set; over-tightening adjustment on this 75 mm bore smears the roller ends against the rib.
• The 20.0 mm section leaves little room for an oversized shaft fillet; check the mounting-chamfer table for 32015XU or the ring will bottom out on the radius instead of the shoulder face.
• Grease packs must leave free volume in the 25 mm-wide set; over-greasing a paired bearing churning at the 4,000 r/min oil-band speed raises temperature and destroys the preload setting.
• Replacing one half of an adjusted pair without resetting end play negates the 25 mm T dimension logic: re-adjust the set and re-verify the contact pattern rather than reusing the old spacer stack.
• The 118/167 kN ratings and 20.3 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 32015XU (ISO 355 4CC); internal geometry legitimately differs between manufacturers, so re-verify ratings, adjustment and suffix before substituting another make on a rated drive.