N2315 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 N2315 model number is decoded

For pure radial duty on a 75 mm shaft NTN supplies N2315: two integral ribs on the inner ring and a ribless separable outer ring; the open execution is rated 3,800 r/min on grease and 4,500 r/min on oil. Numbering ties N2315 to its envelope: type code N, series N2300, 75 mm bore; the 160×55 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. The 42.5 mm radial section ((160−75)/2) frames the roller complement; capacity per millimetre of bore is about 3.8 kN/mm before application factors. Equivalent-load planning treats N2315 as a pure radial bearing: keep P below 286 kN at the required L10, and let a paired angular-contact or thrust part carry any sustained axial component. Keep the open bearing wrapped until fitting: the line-contact raceways of the 75 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

• Induction-heat the 75 mm inner ring (max 120 °C) and mount it before fitting the outer ring; the ring mass makes square guidance essential — driving through the rollers brinells the 160 mm raceway.
• The 42.5 mm section at 75 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 55 mm-wide cavity.
• If the shaft must be located both ways, do not use N2315 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• The 42.5 mm section at 75 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 55 mm-wide cavity.
• The 42.5 mm section at 75 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 55 mm-wide cavity.
• The 286/300 kN ratings, 35 kN Pu and 4770 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N2315 (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.