N260 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 N260 model number is decoded

For pure radial duty on a 300 mm shaft NTN supplies N260: two integral ribs on the inner ring and a ribless separable outer ring; the open execution is rated 1,100 r/min on grease and 1,300 r/min on oil. The leading N defines the rib arrangement (inner ring ribbed, outer ring ribless); the dimension-series digits and the two-digit bore code resolve to 300 mm, with 540 mm OD and 85 mm width from the ISO 15 general plan. NTN prints two speed ceilings: 1,100 r/min grease and 1,300 r/min oil — the pressed-steel cage and lubricant film set the real limit at the 300 mm bore. Thermal planning around the 1,100 r/min grease ceiling should include the cage type (a pressed sheet-steel cage) and oil-flow option to 1,300 r/min for continuously high-duty 300 mm positions. After mounting verify the outer ring slides axially by hand at ambient temperature; a stuck float ring in a N260 non-locating position preloads the bearing when the shaft grows.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 300 mm bore, oil-lubricated arrangements toward 1,300 r/min need positive flow and drain design; the 86400 g N260 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• The N rib arrangement is not interchangeable with another prefix on the same 300 mm seat: inner ring ribbed, outer ring ribless. Swapping NU for NJ changes axial location behaviour even though the 540×85 mm envelope matches.
• The N rib arrangement is not interchangeable with another prefix on the same 300 mm seat: inner ring ribbed, outer ring ribless. Swapping NU for NJ changes axial location behaviour even though the 540×85 mm envelope matches.
• Open N260 units need application-supplied sealing and a defined lubricant schedule; film thickness is the first failure mode for line contact when viscosity drops at the 300 mm contact.
• If the shaft must be located both ways, do not use N260 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• The 1560/2070 kN ratings, 164 kN Pu and 86400 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N260 (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.