N215EA 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 N215EA model number is decoded

N215EA belongs to the NTN cylindrical roller range in NTN Ball and Roller Bearings CAT.No.2203E, under the ＊ ULTAGE new-generation specification: line-contact rollers between ground raceways for a 154 kN dynamic rating in the 75 mm bore. On the NTN nameplate N states which ring carries the ribs, which determines whether N215EA floats or locates; the numeric remainder is the ISO 15 series and 75 mm bore reference, not a fit or clearance instruction. Minimum radial load matters: an unloaded N215EA at high speed skids its rollers and smears the raceway; spring preload or the rotor weight typically covers the requirement in motors and pumps. Selection arithmetic: Pu 18.9 kN is the fatigue load limit feeding the adjusted-life equation, and the C0/C ratio of 1.01 (156/154 kN) shows the high-static-capacity proportioning of this 75 mm bore. After mounting verify the outer ring slides axially by hand at ambient temperature; a stuck float ring in a N215EA non-locating position preloads the bearing when the shaft grows.

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 130 mm raceway.
• If the shaft must be located both ways, do not use N215EA alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 154/156 kN pair here belongs to N215EA as printed, not to the bare size.
• The 25 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 75 mm inner ring.
• Do not replace N215EA with a deep-groove ball bearing on rating alone: line contact gives 154 kN radial capacity but the bearing cannot carry the thrust duty a ball bearing can and misalignment tolerance is only 3–4 arc-minutes.
• The 154/156 kN ratings, 18.9 kN Pu and 1280 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N215EA (EA pressed-steel-cage 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.