N2348 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 N2348 model number is decoded

NTN lists N2348 on the 240×500 mm envelope, 155 mm wide: a line-contact radial bearing with a pressed sheet-steel cage and a grease limiting speed of 1,100 r/min. On the NTN nameplate N states which ring carries the ribs, which determines whether N2348 floats or locates; the numeric remainder is the ISO 15 series and 240 mm bore reference, not a fit or clearance instruction. Line contact between rollers and raceways gives N2348 high radial capacity but no tolerance for misalignment: beyond roughly 3–4 arc-minutes the roller ends edge-load and fatigue accelerates. The 9.7 kN-per-mm-bore figure (2330 kN over 240 mm) lets a N2348 interchange candidate be screened quickly against the same-envelope ball or roller alternatives. Keep the open bearing wrapped until fitting: the line-contact raceways of the 240 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 240 mm bore, oil-lubricated arrangements toward 1,300 r/min need positive flow and drain design; the 144000 g N2348 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• Wide (22/23) and light (10/49) executions at 240 mm bore share bore but not OD/width; check the full N2300 series code before substituting, because housing and shoulder geometry will not interchange.
• The 155 mm width and abutment faces must be square to the axis; a tilted spacer concentrates load across the roller set and shows as uneven raceway polish on the 240 mm inner ring.
• The 130.0 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 155 mm-wide cavity.
• Wide (22/23) and light (10/49) executions at 240 mm bore share bore but not OD/width; check the full N2300 series code before substituting, because housing and shoulder geometry will not interchange.
• The 2330/3200 kN ratings, 262 kN Pu and 144000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N2348 (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.