N212EA 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 N212EA model number is decoded

N212EA is an NTN N cylindrical roller bearing: two integral ribs on the inner ring and a ribless separable outer ring — equivalent float behaviour with the separable ring on the housing side, inside the 60×110×22 mm ISO 15 envelope. On the NTN nameplate N states which ring carries the ribs, which determines whether N212EA floats or locates; the numeric remainder is the ISO 15 series and 60 mm bore reference, not a fit or clearance instruction. NTN prints two speed ceilings: 5,800 r/min grease and 8,200 r/min oil — the pressed-steel cage and lubricant film set the real limit at the 60 mm bore. Selection arithmetic: Pu 13.1 kN is the fatigue load limit feeding the adjusted-life equation, and the C0/C ratio of 0.93 (107/115 kN) shows the high-static-capacity proportioning of this 60 mm bore. Keep the open bearing wrapped until fitting: the line-contact raceways of the 60 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 60 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 110 mm raceway.
• The 22 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 60 mm inner ring.
• Do not replace N212EA with a deep-groove ball bearing on rating alone: line contact gives 115 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 EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 115/107 kN pair here belongs to N212EA as printed, not to the bare size.
• If the shaft must be located both ways, do not use N212EA alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• The 115/107 kN ratings, 13.1 kN Pu and 798 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N212EA (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.