430210 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 430210 model number is decoded

For a 50 mm shaft needing a compact two-direction thrust location, NTN lists 4T-430210, a TDO double-row 4T unit of 147 kN C and 186 kN C0 in the light-duty 430-family TDO double-row series. Unlike a pair of single-row bearings, the TDO unit of 4T-430210 integrates both rows in one article: the 49 mm overall width and the internal clearance are ground and set by NTN, so there is no field adjustment dimension. Speed planning uses both catalogue columns: grease 3,400 r/min is the mechanical ceiling, oil 4,500 r/min with oil lubrication — a 1,100 r/min margin at this size. The internal clearance of 4T-430210 is set at the factory by the double cup and spacer-less grinding; do not attempt to re-adjust it with shaft nuts — the 49 mm overall width is the finished dimension. The preset clearance suits the standard temperature range; unusual thermal gradients between shaft and housing call for a clearance review against the 50 mm size before ordering 4T-430210.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Gearbox positions of this 50 mm class rely on the preset clearance of 4T-430210; shimming or nut-tightening the unit like a single-row pair overruns the factory setting and runs the rows hot.
• The 430 light plan keeps 4T-430210 narrower and faster than the 432 heavy execution of the same 50 mm bore; where shock or a high thrust share dominates, verify whether the heavier 432-family row is the intended position.
• The 147 kN C already includes two-row load sharing — do not double it when pairing the unit with a floating bearing in the L10 calculation.
• The 147 kN C already includes two-row load sharing — do not double it when pairing the unit with a floating bearing in the L10 calculation.
• The 20.0 mm section leaves little room for oversized shaft fillets; follow the 2203E chamfer table for 4T-430210 or the cones bottom out on the radius.
• The 147/186 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-430210; internal geometry legitimately differs between manufacturers, so re-verify ratings, clearance class and suffix before substituting another make on a rated drive.