430317DU 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 430317DU model number is decoded

For a 85 mm shaft needing a compact two-direction thrust location, NTN lists 4T-430317DU, a TDO double-row 4T unit of 470 kN C and 585 kN C0 in the light-duty 430-family TDO double-row series. Suffix reading on 430317DU: U marks the uprated/reinforced internal design, a separate order number with higher capacity than the basic execution; D is an internal-design revision letter of the base number; suffixed variants are separate order numbers and are not interchangeable articles. Axial capacity is bidirectional because the rows are opposed: 4T-430317DU locates the shaft in both directions with C0 585 kN behind the static check of the more heavily loaded row. Because the unit is preset, mounting 4T-430317DU 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. Re-lubrication holes and grooves of the housing should line up with the cup's mid-width so fresh grease reaches both roller rows of 4T-430317DU.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Mount the 85 mm unit by induction heating (max 120 °C); at 10.4 kg a cocked lift damages the cages and ribs before the bearing ever runs.
• The 430 light plan keeps 4T-430317DU narrower and faster than the 432 heavy execution of the same 85 mm bore; where shock or a high thrust share dominates, verify whether the heavier 432-family row is the intended position.
• Order by the full 430317DU code including suffixes — U, X, DX, E1 and UTG variants share the 85 mm bore but are different articles with different internal geometry.
• Order by the full 430317DU code including suffixes — U, X, DX, E1 and UTG variants share the 85 mm bore but are different articles with different internal geometry.
• The internal clearance of 4T-430317DU is factory-set: no end-play adjustment exists at mounting, and any attempt to set preload with a shaft nut overloads one row.
• The 470/585 kN ratings and 66 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-430317DU; internal geometry legitimately differs between manufacturers, so re-verify ratings, clearance class and suffix before substituting another make on a rated drive.