NU2352 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 NU2352 model number is decoded

NU2352 is an NTN NU cylindrical roller bearing: two integral ribs on the outer ring and a ribless, separable inner ring — a non-locating bearing that lets the shaft float axially, inside the 260×540×165 mm ISO 15 envelope. On the NTN nameplate NU states which ring carries the ribs, which determines whether NU2352 floats or locates; the numeric remainder is the ISO 15 series and 260 mm bore reference, not a fit or clearance instruction. NTN prints two speed ceilings: 1,000 r/min grease and 1,200 r/min oil — the pressed-steel cage and lubricant film set the real limit at the 260 mm bore. With the inner ring rotating, catalogue practice is a m6/n6 shaft seat and an H7/H6 housing; the outer ring must remain free to creep slightly axially in non-locating NU arrangements. Provide axial location with an adjacent locating bearing rather than expecting the float cylindrical set to hold thrust on the 260 mm shaft.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 260 mm bore, oil-lubricated arrangements toward 1,200 r/min need positive flow and drain design; the 178000 g NU2352 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• Open NU2352 units need application-supplied sealing and a defined lubricant schedule; film thickness is the first failure mode for line contact when viscosity drops at the 260 mm contact.
• If the shaft must be located both ways, do not use NU2352 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• Minimum radial load is frequently missed in oversized motor and fan selections: an underloaded NU2352 skids at 1,000 r/min and fails by smearing long before L10 fatigue.
• If the shaft must be located both ways, do not use NU2352 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• The 2600/3600 kN ratings, 289 kN Pu and 178000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NU2352 (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.