N2330 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 N2330 model number is decoded

The NTN order number N2330 denotes a 150×320×108 mm (5.906 × 12.598 × 4.252 in) cylindrical roller bearing in the N2300 family, a pressed sheet-steel cage. On the NTN nameplate N states which ring carries the ribs, which determines whether N2330 floats or locates; the numeric remainder is the ISO 15 series and 150 mm bore reference, not a fit or clearance instruction. NTN ships these bearings open with normal (CN) radial clearance and P0 tolerance as standard; precision classes and C3/C4 clearance are separate order suffixes, not part of N2330. Thermal planning around the 1,900 r/min grease ceiling should include the cage type (a pressed sheet-steel cage) and oil-flow option to 2,200 r/min for continuously high-duty 150 mm positions. Keep the open bearing wrapped until fitting: the line-contact raceways of the 150 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

• At 150 mm bore, oil-lubricated arrangements toward 2,200 r/min need positive flow and drain design; the 39800 g N2330 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• Grease limiting speed 1,900 r/min and oil 2,200 r/min are different limits for N2330: the first is the cage/lubricant mechanical ceiling, the second assumes real oil flow rather than an oil bath.
• The N rib arrangement is not interchangeable with another prefix on the same 150 mm seat: inner ring ribbed, outer ring ribless. Swapping NU for NJ changes axial location behaviour even though the 320×108 mm envelope matches.
• Never press either ring through the roller complement when fitting: mounting force goes through the ring faces, or the 320 mm race brinells and releases as vibration within hours.
• Never press either ring through the roller complement when fitting: mounting force goes through the ring faces, or the 320 mm race brinells and releases as vibration within hours.
• The 1130/1400 kN ratings, 132 kN Pu and 39800 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N2330 (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.