NU2213EA 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 NU2213EA model number is decoded

NU2213EA 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 65×120×31 mm ISO 15 envelope. The leading NU defines the rib arrangement (outer ring ribbed, inner ring ribless); the dimension-series digits and the two-digit bore code resolve to 65 mm, with 120 mm OD and 31 mm width from the ISO 15 general plan. With C 176 kN and C0 181 kN (C0/C ≈ 1.03) the bearing is proportioned for heavy radial load; the NU design carries no axial load and floats axially on both sides. Mass 1440 g for the 65×120×31 mm NU2213EA execution covers the pressed-steel cage and full roller complement; substitute on mass plus rating, not envelope alone. Provide axial location with an adjacent locating bearing rather than expecting the float cylindrical set to hold thrust on the 65 mm shaft.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Induction-heat the 65 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 120 mm raceway.
• If the shaft must be located both ways, do not use NU2213EA alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• If the shaft must be located both ways, do not use NU2213EA alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• The 31 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 65 mm inner ring.
• Minimum radial load is frequently missed in oversized motor and fan selections: an underloaded NU2213EA skids at 4,800 r/min and fails by smearing long before L10 fatigue.
• The 176/181 kN ratings, 22.1 kN Pu and 1440 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NU2213EA (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.