NUP2248 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 NUP2248 model number is decoded

NUP2248 is the wide (22) section of the NTN NUP2200 dimension series for a 240 mm shaft — 1590 kN of basic dynamic capacity in a 78400 g, open bearing. On the NTN nameplate NUP states which ring carries the ribs, which determines whether NUP2248 floats or locates; the numeric remainder is the ISO 15 series and 240 mm bore reference, not a fit or clearance instruction. Minimum radial load matters: an unloaded NUP2248 at high speed skids its rollers and smears the raceway; spring preload or the rotor weight typically covers the requirement in motors and pumps. Mass 78400 g for the 240×440×120 mm NUP2248 execution covers the pressed-steel cage and full roller complement; substitute on mass plus rating, not envelope alone. Confirm the loose L-shaped rib ring is fitted and seated, since it is what turns the NJ-type arrangement into the two-direction-locating NUP set on the 240 mm shaft.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 240 mm bore, oil-lubricated arrangements toward 1,600 r/min need positive flow and drain design; the 78400 g NUP2248 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• If the shaft must be located both ways, do not use NUP2248 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• The NUP rib arrangement is not interchangeable with another prefix on the same 240 mm seat: inner ring two ribs + loose L-ring. Swapping NU for NJ changes axial location behaviour even though the 440×120 mm envelope matches.
• The 100.0 mm section at 240 mm bore leaves a narrow oil path; with the standard cage the relubrication groove and oil-level design must keep grease from churning in the 120 mm-wide cavity.
• Do not replace NUP2248 with a deep-groove ball bearing on rating alone: line contact gives 1590 kN radial capacity but the bearing only accepts small sustained axial guidance loads and misalignment tolerance is only 3–4 arc-minutes.
• The 1590/2320 kN ratings, 196 kN Pu and 78400 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NUP2248 (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.