N224 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 N224 model number is decoded

N224 is the standard section of the NTN N200 dimension series for a 120 mm shaft — 288 kN of basic dynamic capacity in a 5460 g, open bearing. Digit by digit, N224 reads as N (inner ring ribbed, outer ring ribless), ISO 15 series, and bore 120 mm; trailing letters such as EA or E mark the cage/capacity execution and are part of the order number. NTN ships these bearings open with normal (CN) radial clearance and P0 tolerance as standard; precision classes and C3/C4 clearance are separate order suffixes, not part of N224. Equivalent-load planning treats N224 as a pure radial bearing: keep P below 288 kN at the required L10, and let a paired angular-contact or thrust part carry any sustained axial component. Housing and shaft fillets must clear the ring chamfers of N224; an oversized radius locks the ring on its face and tilts the 40 mm-wide seat.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 120 mm bore, oil-lubricated arrangements toward 3,700 r/min need positive flow and drain design; the 5460 g N224 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• If the shaft must be located both ways, do not use N224 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• Do not replace N224 with a deep-groove ball bearing on rating alone: line contact gives 288 kN radial capacity but the bearing cannot carry the thrust duty a ball bearing can and misalignment tolerance is only 3–4 arc-minutes.
• Do not replace N224 with a deep-groove ball bearing on rating alone: line contact gives 288 kN radial capacity but the bearing cannot carry the thrust duty a ball bearing can and misalignment tolerance is only 3–4 arc-minutes.
• Never press either ring through the roller complement when fitting: mounting force goes through the ring faces, or the 215 mm race brinells and releases as vibration within hours.
• The 288/320 kN ratings, 33.5 kN Pu and 5460 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N224 (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.