430322U 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 430322U model number is decoded

The NTN 2203E double-row table prints 4T-430322U at 110 mm bore, 240 mm OD and 118 mm overall width, with a grease limiting speed of 1,400 r/min and an oil ceiling of 1,800 r/min. Reading the designation: the last two digits 22 are the bore code, ×5 = 110 mm (codes 00–03 use the 10/12/15/17 exception table); the leading digits place the bearing in the light-duty 430-family TDO double-row series. Catalogue mass of 4T-430322U is 23.9 kg; lifting and fitting tackle must be rated for the whole preset unit, not for single-ring handling. TDO construction means the two cone assemblies of 4T-430322U 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 110 mm shaft. Induction heating to max 120 °C is the standard fitting method at this 110 mm bore; driving the unit home through the rollers brinells both rows at once.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Mount the 110 mm unit by induction heating (max 120 °C); at 23.9 kg a cocked lift damages the cages and ribs before the bearing ever runs.
• The 430 light plan keeps 4T-430322U narrower and faster than the 432 heavy execution of the same 110 mm bore; where shock or a high thrust share dominates, verify whether the heavier 432-family row is the intended position.
• The 910 kN C already includes two-row load sharing — do not double it when pairing the unit with a floating bearing in the L10 calculation.
• An unloaded 4T-430322U near 1,400 r/min lets rollers skid; ensure a minimum load or light spring preload on high-speed positions.
• Order by the full 430322U code including suffixes — U, X, DX, E1 and UTG variants share the 110 mm bore but are different articles with different internal geometry.
• The 910/1170 kN ratings and 120 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-430322U; internal geometry legitimately differs between manufacturers, so re-verify ratings, clearance class and suffix before substituting another make on a rated drive.