NUP2224 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 NUP2224 model number is decoded

NUP2224 is an NTN NUP cylindrical roller bearing: the NJ rib arrangement plus a loose L-shaped rib ring on the inner ring — it locates the shaft in both axial directions, inside the 120×215×58 mm ISO 15 envelope. Reading the code: NUP for the two-direction-locating type, then the ISO 15 diameter/width series and the bore code — ×5 = 120 mm (00–03 use the 10/12/15/17 exception table). NTN prints the raceway diameters for this size — Fw 143.5 mm and Ew 191.5 mm — the envelope inside the 120/215 mm bore/OD where the rollers actually run. Rating life at 385 kN C assumes clean oil and adequate film; the 48 kN Pu floor means contamination derating — not the C rating alone — governs adjusted life in dusty gearboxes. Keep the open bearing wrapped until fitting: the line-contact raceways of the 120 mm bore indent under a single hard particle, and the steel cage provides no sealing of its own.

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 NUP2224 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• Wide (22/23) and light (10/49) executions at 120 mm bore share bore but not OD/width; check the full NUP2200 series code before substituting, because housing and shoulder geometry will not interchange.
• The NUP rib arrangement is not interchangeable with another prefix on the same 120 mm seat: inner ring two ribs + loose L-ring. Swapping NU for NJ changes axial location behaviour even though the 215×58 mm envelope matches.
• Minimum radial load is frequently missed in oversized motor and fan selections: an underloaded NUP2224 skids at 2,900 r/min and fails by smearing long before L10 fatigue.
• The NUP rib arrangement is not interchangeable with another prefix on the same 120 mm seat: inner ring two ribs + loose L-ring. Swapping NU for NJ changes axial location behaviour even though the 215×58 mm envelope matches.
• The 385/460 kN ratings, 48 kN Pu and 8030 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NUP2224 (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.