N2226 bearing: complete specifications & equivalents
The N2226 is a ISO 15 radial bearing sized 130 x 230 x 64 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 130 mm |
| Outer diameter D | 230 mm |
| Width B | 64 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 420 kN |
| Basic static load rating C0 | 530 kN |
| Fatigue load limit Pu | 54 kN |
| Limiting speed (mechanical) | 2600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 10000 g |
| Manufacturer designation | NTN N2226 |
| 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 & N2200-series range
| Bore d | 5.118 in |
|---|---|
| Outer diameter D | 9.055 in |
| Width B | 2.52 in |
| ISO bore code | 26 |
| Radial section height (D−d)/2 | 50 mm |
| Smallest bore in N2200-series | 20 mm |
| Largest outer diameter in N2200-series | 580 mm |
| Width range across N2200-series | 18–150 mm |
| Bore position in N2200-series (smallest first) | 20 of 33 |
| Bore above smallest N2200-series size | 110 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| N2226 | 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 N2226 model number is decoded
N2226 belongs to the NTN cylindrical roller range in NTN Ball and Roller Bearings CAT.No.2203E: line-contact rollers between ground raceways for a 420 kN dynamic rating in the 130 mm bore. Reading the code: N for the separable-outer-ring type, then the ISO 15 diameter/width series and the bore code — ×5 = 130 mm (00–03 use the 10/12/15/17 exception table). The 50.0 mm radial section ((230−130)/2) frames the roller complement; capacity per millimetre of bore is about 3.2 kN/mm before application factors. The 3.2 kN-per-mm-bore figure (420 kN over 130 mm) lets a N2226 interchange candidate be screened quickly against the same-envelope ball or roller alternatives. Keep the open bearing wrapped until fitting: the line-contact raceways of the 130 mm bore indent under a single hard particle, and the steel cage provides no sealing of its own.
Typical equipment & failure modes
Common applications
- offshore drawworks and winch drums
- heavy press and large gearbox main shafts
- rolling-mill work-roll and backup-roll positions
- large turbine and generator rotor bearings
Known failure patterns
- roller smearing (microwelding) at start-up before the oil film builds under insufficient radial load
- 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
- false brinelling on standby machines exposed to external vibration
- brinelling from static overload or impact during handling
Selection pitfalls — read before you substitute
- At 130 mm bore, oil-lubricated arrangements toward 3,100 r/min need positive flow and drain design; the 10000 g N2226 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
- Open N2226 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 130 mm contact.
- Open N2226 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 130 mm contact.
- If the shaft must be located both ways, do not use N2226 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
- The 50.0 mm section at 130 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 64 mm-wide cavity.
- The 420/530 kN ratings, 54 kN Pu and 10000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N2226 (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 N2226?
N2226 is an NTN N single-row cylindrical roller bearing to ISO 15: 130 mm bore, 230 mm OD and 64 mm width (5.118 × 9.055 × 2.52 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 420 kN, C0 530 kN, Pu 54 kN, grease limiting speed 2,600 r/min, oil 3,100 r/min, mass about 10000 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. N2226 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. N2226 is supplied in the standard open execution shown in the table.
Can N2226 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 N2226?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 156 mm, Ew 204 mm. The nominal bore/OD remain 130/230 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 2,600 r/min grease / 3,100 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.