432215U bearing: complete specifications & equivalents

Specification table

Source: catalog reference (NTN 2203E 2026-09-25) · extracted 2026-10-01

Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN 2203E 2026-09-25); 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 432215U model number is decoded

4T-432215U belongs to the heavy-duty 432-family TDO double-row series of NTN double-row tapered roller bearings; the unit is mounted as one article and its internal clearance is set at the factory, not on the shaft. Reading the designation: the last two digits 15 are the bore code, ×5 = 75 mm (codes 00–03 use the 10/12/15/17 exception table); the leading digits place the bearing in the heavy-duty 432-family TDO double-row series. The fatigue load limit Cu printed for 4T-432215U is 54 kN — the equivalent-load floor below which high reliability is expected even under contamination in the adjusted-life equation. TDO construction means the two cone assemblies of 4T-432215U face away from each other inside one double cup: the load lines diverge outward, giving a wide effective spread and high moment stiffness for the 75 mm shaft. The preset clearance suits the standard temperature range; unusual thermal gradients between shaft and housing call for a clearance review against the 75 mm size before ordering 4T-432215U.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Mount the 75 mm unit by induction heating (max 120 °C); at 3.68 kg a cocked lift damages the cages and ribs before the bearing ever runs.
• The 432 heavy plan gives 4T-432215U its 74 mm width and 320 kN rating at the 75 mm bore; do not downgrade to a 430-family unit of the same bore without re-checking C, C0 and the 54 kN Cu.
• The internal clearance of 4T-432215U is factory-set: no end-play adjustment exists at mounting, and any attempt to set preload with a shaft nut overloads one row.
• Order by the full 432215U code including suffixes — U, X, DX, E1 and UTG variants share the 75 mm bore but are different articles with different internal geometry.
• At inspection do not mix the cone assemblies of 4T-432215U with another unit; rows are ground together and re-matching is not guaranteed in the field.
• The 320/445 kN ratings and 54 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-432215U; internal geometry legitimately differs between manufacturers, so re-verify ratings, clearance class and suffix before substituting another make on a rated drive.