N2224 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 N2224 model number is decoded

For pure radial duty on a 120 mm shaft NTN supplies N2224: two integral ribs on the inner ring and a ribless separable outer ring; the open execution is rated 2,900 r/min on grease and 3,400 r/min on oil. On the NTN nameplate N states which ring carries the ribs, which determines whether N2224 floats or locates; the numeric remainder is the ISO 15 series and 120 mm bore reference, not a fit or clearance instruction. Line contact between rollers and raceways gives N2224 high radial capacity but no tolerance for misalignment: beyond roughly 3–4 arc-minutes the roller ends edge-load and fatigue accelerates. The 120 mm (4.724 in) bore and 215 mm (8.465 in) OD are ISO 15 boundary values; fillet and shoulder dimensions must still come from the NTN mounting table for the 58 mm-wide ring. Housing and shaft fillets must clear the ring chamfers of N2224; an oversized radius locks the ring on its face and tilts the 58 mm-wide seat.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 120 mm bore, oil-lubricated arrangements toward 3,400 r/min need positive flow and drain design; the 8030 g N2224 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• The N rib arrangement is not interchangeable with another prefix on the same 120 mm seat: inner ring ribbed, outer ring ribless. Swapping NU for NJ changes axial location behaviour even though the 215×58 mm envelope matches.
• The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 385/460 kN pair here belongs to N2224 as printed, not to the bare size.
• Wide (22/23) and light (10/49) executions at 120 mm bore share bore but not OD/width; check the full N2200 series code before substituting, because housing and shoulder geometry will not interchange.
• Wide (22/23) and light (10/49) executions at 120 mm bore share bore but not OD/width; check the full N2200 series code before substituting, because housing and shoulder geometry will not interchange.
• The 385/460 kN ratings, 48 kN Pu and 8030 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N2224 (standard 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.