N213 bearing: complete specifications & equivalents
The N213 is a ISO 15 radial bearing sized 65 x 120 x 23 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 65 mm |
| Outer diameter D | 120 mm |
| Width B | 23 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 93 kN |
| Basic static load rating C0 | 94.5 kN |
| Fatigue load limit Pu | 11.5 kN |
| Limiting speed (mechanical) | 5900 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1000 g |
| Manufacturer designation | NTN N213 |
| 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 & N200-series range
| Bore d | 2.559 in |
|---|---|
| Outer diameter D | 4.724 in |
| Width B | 0.906 in |
| ISO bore code | 13 |
| Radial section height (D−d)/2 | 27.5 mm |
| Smallest bore in N200-series | 17 mm |
| Largest outer diameter in N200-series | 580 mm |
| Width range across N200-series | 12–92 mm |
| Bore position in N200-series (smallest first) | 11 of 35 |
| Bore above smallest N200-series size | 48 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| N213-ECP | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 65×120×23 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
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 N213 model number is decoded
N213 belongs to the NTN cylindrical roller range in NTN Ball and Roller Bearings CAT.No.2203E, under the ＊ ULTAGE new-generation specification: line-contact rollers between ground raceways for a 93 kN dynamic rating in the 65 mm bore. Numbering ties N213 to its envelope: type code N, series N200, 65 mm bore; the 120×23 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. The 23 mm width and 27.5 mm section put the N200 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. The 65 mm (2.559 in) bore and 120 mm (4.724 in) OD are ISO 15 boundary values; fillet and shoulder dimensions must still come from the NTN mounting table for the 23 mm-wide ring. Housing and shaft fillets must clear the ring chamfers of N213; an oversized radius locks the ring on its face and tilts the 23 mm-wide seat.
Typical equipment & failure modes
Common applications
- crusher and vibrating-screen drive shafts
- marine gearbox and deck-machinery shafts
- large electric-motor and generator rotors
- cement and mining conveyor drive pulleys
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
- roller-end and raceway scoring from inadequate oil flow under heavy radial load
- brinelling from static overload or impact during handling
- edge loading from shaft deflection beyond the 3–4 arc-minute alignment limit
Selection pitfalls — read before you substitute
- Induction-heat the 65 mm inner ring (max 120 °C) and mount it before fitting the outer ring; the ring mass makes square guidance essential — driving through the rollers brinells the 120 mm raceway.
- The 27.5 mm section at 65 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 23 mm-wide cavity.
- The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 93/94.5 kN pair here belongs to N213 as printed, not to the bare size.
- Do not replace N213 with a deep-groove ball bearing on rating alone: line contact gives 93 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 N213 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 65 mm contact.
- The 93/94.5 kN ratings, 11.5 kN Pu and 1000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N213 (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 N213?
N213 is an NTN N single-row cylindrical roller bearing to ISO 15: 65 mm bore, 120 mm OD and 23 mm width (2.559 × 4.724 × 0.906 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 93 kN, C0 94.5 kN, Pu 11.5 kN, grease limiting speed 5,900 r/min, oil 7,000 r/min, mass about 1000 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. N213 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. N213 is listed among the ＊ ULTAGE-marked executions in 2203E.
Can N213 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 N213?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 79.6 mm, Ew 105.6 mm. The nominal bore/OD remain 65/120 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 5,900 r/min grease / 7,000 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.