N2309EA 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 N2309EA model number is decoded

NTN lists N2309EA on the 45×100 mm envelope, 36 mm wide: a line-contact radial bearing with the EA high-capacity pressed sheet-steel cage and a grease limiting speed of 5,700 r/min. Numbering ties N2309EA to its envelope: type code N, series N2300, 45 mm bore; the 100×36 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. Line contact between rollers and raceways gives N2309EA 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 162 kN C assumes clean oil and adequate film; the 18.7 kN Pu floor means contamination derating — not the C rating alone — governs adjusted life in dusty gearboxes. Provide axial location with an adjacent locating bearing rather than expecting the float cylindrical set to hold thrust on the 45 mm shaft.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 45 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 N2309EA.
• The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 162/153 kN pair here belongs to N2309EA as printed, not to the bare size.
• The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 162/153 kN pair here belongs to N2309EA as printed, not to the bare size.
• Wide (22/23) and light (10/49) executions at 45 mm bore share bore but not OD/width; check the full N2300 series code before substituting, because housing and shoulder geometry will not interchange.
• Wide (22/23) and light (10/49) executions at 45 mm bore share bore but not OD/width; check the full N2300 series code before substituting, because housing and shoulder geometry will not interchange.
• The 162/153 kN ratings, 18.7 kN Pu and 1300 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N2309EA (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.