423076UTG 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 423076UTG model number is decoded

4T-423076UTG belongs to the light-duty 430-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. The 4T- prefix is NTN's tapered roller quality mark; 430 numbers the light TDO plan and 432 the heavy TDO plan — at the same 380 mm bore the 432 execution carries a wider, heavier section than the 430. The 90.0 mm radial section over the 380 mm bore carries two roller rows across the 171 mm width; abutment shoulders must clear both cone bores and the double-cup OD. Because the unit is preset, mounting 4T-423076UTG resembles mounting a double-row spherical or cylindrical bearing: seat the unit, clamp axially to the stated end cover torque, and verify rotation — no end-play measurement is required. Induction heating to max 120 °C is the standard fitting method at this 380 mm bore; driving the unit home through the rollers brinells both rows at once.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 380 mm bore the 4T-423076UTG unit needs hydraulic or crane-assisted fitting and a verified oil supply; manual methods cannot control seating at the 2670 kN C level.
• The 430 light plan keeps 4T-423076UTG narrower and faster than the 432 heavy execution of the same 380 mm bore; where shock or a high thrust share dominates, verify whether the heavier 432-family row is the intended position.
• Clamping the double cup with a cocked end cover pinches one row: tighten the 560 mm OD clamping uniformly around the circumference.
• An unloaded 4T-423076UTG near 440 r/min lets rollers skid; ensure a minimum load or light spring preload on high-speed positions.
• Order by the full 423076UTG code including suffixes — U, X, DX, E1 and UTG variants share the 380 mm bore but are different articles with different internal geometry.
• The 2670/4350 kN ratings and 335 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-423076UTG; internal geometry legitimately differs between manufacturers, so re-verify ratings, clearance class and suffix before substituting another make on a rated drive.