N2336 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 N2336 model number is decoded

For pure radial duty on a 180 mm shaft NTN supplies N2336: two integral ribs on the inner ring and a ribless separable outer ring; the open execution is rated 1,500 r/min on grease and 1,800 r/min on oil. Numbering ties N2336 to its envelope: type code N, series N2300, 180 mm bore; the 380×126 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. Minimum radial load matters: an unloaded N2336 at high speed skids its rollers and smears the raceway; spring preload or the rotor weight typically covers the requirement in motors and pumps. Equivalent-load planning treats N2336 as a pure radial bearing: keep P below 1530 kN at the required L10, and let a paired angular-contact or thrust part carry any sustained axial component. Heat the inner ring to max 120 °C for the 180 mm interference fit and support the ring face square during fitting; cocking over a keyway brinells the raceway before first rotation.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 180 mm bore, oil-lubricated arrangements toward 1,800 r/min need positive flow and drain design; the 68100 g N2336 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• The 126 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 180 mm inner ring.
• The 126 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 180 mm inner ring.
• If the shaft must be located both ways, do not use N2336 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• Do not replace N2336 with a deep-groove ball bearing on rating alone: line contact gives 1530 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 1530/1990 kN ratings, 179 kN Pu and 68100 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N2336 (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.