NJ264 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 NJ264 model number is decoded

NJ264 is the standard section of the NTN NJ200 dimension series for a 320 mm shaft — 1780 kN of basic dynamic capacity in a 109000 g, open bearing. Numbering ties NJ264 to its envelope: type code NJ, series NJ200, 320 mm bore; the 580×92 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. The 92 mm width and 130.0 mm section put the NJ200 series in the standard section; wide 22/23 variants at the same bore change OD, width and heat generation and are not drop-in swaps. Selection arithmetic: Pu 186 kN is the fatigue load limit feeding the adjusted-life equation, and the C0/C ratio of 1.34 (2390/1780 kN) shows the high-static-capacity proportioning of this 320 mm bore. Housing and shaft fillets must clear the ring chamfers of NJ264; an oversized radius locks the ring on its face and tilts the 92 mm-wide seat.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 320 mm bore, oil-lubricated arrangements toward 1,200 r/min need positive flow and drain design; the 109000 g NJ264 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 1780/2390 kN pair here belongs to NJ264 as printed, not to the bare size.
• The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 1780/2390 kN pair here belongs to NJ264 as printed, not to the bare size.
• Do not replace NJ264 with a deep-groove ball bearing on rating alone: line contact gives 1780 kN radial capacity but the bearing cannot carry the thrust duty a ball bearing can and misalignment tolerance is only 3–4 arc-minutes.
• Open NJ264 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 320 mm contact.
• The 1780/2390 kN ratings, 186 kN Pu and 109000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NJ264 (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.