NU2206EA bearing: complete specifications & equivalents

Specification table

Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01

Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); 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 NU2206EA model number is decoded

NU2206EA is the wide (22) section of the NTN NU2200 dimension series for a 30 mm shaft — 58 kN of basic dynamic capacity in a 259 g, open bearing. On the NTN nameplate NU states which ring carries the ribs, which determines whether NU2206EA floats or locates; the numeric remainder is the ISO 15 series and 30 mm bore reference, not a fit or clearance instruction. Line contact between rollers and raceways gives NU2206EA high radial capacity but no tolerance for misalignment: beyond roughly 3–4 arc-minutes the roller ends edge-load and fatigue accelerates. Rating life at 58 kN C assumes clean oil and adequate film; the 6.1 kN Pu floor means contamination derating — not the C rating alone — governs adjusted life in dusty gearboxes. After mounting verify the outer ring slides axially by hand at ambient temperature; a stuck float ring in a NU2206EA non-locating position preloads the bearing when the shaft grows.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 30 mm bore, shaft thermal growth can preload the inner ring if the fit is too tight; verify residual interference at temperature and confirm the float ring still slides after mounting NU2206EA.
• The NU rib arrangement is not interchangeable with another prefix on the same 30 mm seat: outer ring ribbed, inner ring ribless. Swapping NU for NJ changes axial location behaviour even though the 62×20 mm envelope matches.
• The 16.0 mm section at 30 mm bore leaves a narrow oil path; with the EA pressed-steel-cage cage the relubrication groove and oil-level design must keep grease from churning in the 20 mm-wide cavity.
• The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 58/50 kN pair here belongs to NU2206EA as printed, not to the bare size.
• Wide (22/23) and light (10/49) executions at 30 mm bore share bore but not OD/width; check the full NU2200 series code before substituting, because housing and shoulder geometry will not interchange.
• The 58/50 kN ratings, 6.1 kN Pu and 259 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NU2206EA (EA pressed-steel-cage execution); other makes sharing the ISO 15 envelope revise internal geometry without changing the order number, so keep the 2203E reference with the specification for critical drives.