N2334 bearing: complete specifications & equivalents
The N2334 is a ISO 15 radial bearing sized 170 x 360 x 120 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 170 mm |
| Outer diameter D | 360 mm |
| Width B | 120 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 1360 kN |
| Basic static load rating C0 | 1750 kN |
| Fatigue load limit Pu | 159 kN |
| Limiting speed (mechanical) | 1600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 58300 g |
| Manufacturer designation | NTN N2334 |
| Standard | ISO 15 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
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.
Dimensions in inches & N2300-series range
| Bore d | 6.693 in |
|---|---|
| Outer diameter D | 14.173 in |
| Width B | 4.724 in |
| ISO bore code | 34 |
| Radial section height (D−d)/2 | 95 mm |
| Smallest bore in N2300-series | 20 mm |
| Largest outer diameter in N2300-series | 580 mm |
| Width range across N2300-series | 21–175 mm |
| Bore position in N2300-series (smallest first) | 24 of 31 |
| Bore above smallest N2300-series size | 150 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| N2334 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
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 N2334 model number is decoded
NTN lists N2334 on the 170×360 mm envelope, 120 mm wide: a line-contact radial bearing with a pressed sheet-steel cage and a grease limiting speed of 1,600 r/min. Digit by digit, N2334 reads as N (inner ring ribbed, outer ring ribless), ISO 15 series, and bore 170 mm; trailing letters such as EA or E mark the cage/capacity execution and are part of the order number. NTN prints two speed ceilings: 1,600 r/min grease and 1,900 r/min oil — the pressed-steel cage and lubricant film set the real limit at the 170 mm bore. Selection arithmetic: Pu 159 kN is the fatigue load limit feeding the adjusted-life equation, and the C0/C ratio of 1.29 (1750/1360 kN) shows the high-static-capacity proportioning of this 170 mm bore. After mounting verify the outer ring slides axially by hand at ambient temperature; a stuck float ring in a N2334 non-locating position preloads the bearing when the shaft grows.
Typical equipment & failure modes
Common applications
- rolling-mill work-roll and backup-roll positions
- large turbine and generator rotor bearings
- wind-turbine gearbox planet and rotor shafts
- ship propulsion line shafts and reduction gears
Known failure patterns
- inner-ring raceway spalling from overload in the line-contact Hertzian zone
- cage wear accelerated when the EA high-capacity roller complement runs continuously above its thermal balance
- micro-pitting when the EHL film falls below the composite roughness at high specific load
- edge loading from shaft deflection beyond the 3–4 arc-minute alignment limit
- hard-particle indentation of raceways in unfiltered oil or open arrangements
Selection pitfalls — read before you substitute
- At 170 mm bore, oil-lubricated arrangements toward 1,900 r/min need positive flow and drain design; the 58300 g N2334 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 1360/1750 kN pair here belongs to N2334 as printed, not to the bare size.
- Open N2334 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 170 mm contact.
- Wide (22/23) and light (10/49) executions at 170 mm bore share bore but not OD/width; check the full N2300 series code before substituting, because housing and shoulder geometry will not interchange.
- If the shaft must be located both ways, do not use N2334 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
- The 1360/1750 kN ratings, 159 kN Pu and 58300 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N2334 (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.
Frequently asked questions
What are the dimensions and catalogue data of N2334?
N2334 is an NTN N single-row cylindrical roller bearing to ISO 15: 170 mm bore, 360 mm OD and 120 mm width (6.693 × 14.173 × 4.724 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 1360 kN, C0 1750 kN, Pu 159 kN, grease limiting speed 1,600 r/min, oil 1,900 r/min, mass about 58300 g. It is open, with a pressed sheet-steel cage.
What is the difference between NU, NJ, NUP, N and NF cylindrical roller bearings?
The prefix states the rib arrangement: NU has two outer-ring ribs and a ribless inner ring (float, no axial load); NJ adds ribs for one-direction location; NUP adds a loose L-ring to locate both directions; N has two inner-ring ribs and a separable outer ring; NF has one rib per ring for one-direction guidance. N2334 is two integral ribs on the inner ring and a ribless separable outer ring — equivalent float behaviour with the separable ring on the housing side.
What do the EA, E and ＊ suffixes mean on NTN cylindrical roller bearings?
EA is NTN's high-capacity design with a pressed sheet-steel cage and optimised roller complement in the same ISO 15 envelope; E marks the high-capacity design at the larger bores; the ＊ symbol printed before the code in the NTN catalogue marks the ULTAGE new-generation specification and is not typed as part of the order number. N2334 is supplied in the standard open execution shown in the table.
Can N2334 take axial load and locate a shaft?
the N design is non-locating like NU but floats with the separable outer ring in the housing. Provide axial location with an adjacent locating bearing (angular-contact, deep-groove or a paired NJ/NUP set).
What do Fw and Ew mean for N2334?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 220 mm, Ew 310 mm. The nominal bore/OD remain 170/360 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 1,600 r/min grease / 1,900 r/min oil.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.