N2344 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 N2344 model number is decoded

The NTN order number N2344 denotes a 220×460×145 mm (8.661 × 18.11 × 5.709 in) cylindrical roller bearing in the N2300 family, a pressed sheet-steel cage. Numbering ties N2344 to its envelope: type code N, series N2300, 220 mm bore; the 460×145 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 N2344 at high speed skids its rollers and smears the raceway; spring preload or the rotor weight typically covers the requirement in motors and pumps. Mass 114000 g for the 220×460×145 mm N2344 execution covers the pressed-steel cage and full roller complement; substitute on mass plus rating, not envelope alone. Mount the separable inner ring + roller assembly on the shaft first and slide the outer ring into the housing; never press the outer ring through the rollers of N2344.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 220 mm bore, oil-lubricated arrangements toward 1,400 r/min need positive flow and drain design; the 114000 g N2344 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• The 120.0 mm section at 220 mm bore leaves a narrow oil path; with the standard cage the relubrication groove and oil-level design must keep grease from churning in the 145 mm-wide cavity.
• The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 1970/2620 kN pair here belongs to N2344 as printed, not to the bare size.
• The 145 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 220 mm inner ring.
• Do not replace N2344 with a deep-groove ball bearing on rating alone: line contact gives 1970 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 1970/2620 kN ratings, 222 kN Pu and 114000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N2344 (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.