NF2214EA bearing: complete specifications & equivalents
The NF2214EA is a ISO 15 radial bearing sized 70 x 125 x 31 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 70 mm |
| Outer diameter D | 125 mm |
| Width B | 31 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 184 kN |
| Basic static load rating C0 | 194 kN |
| Fatigue load limit Pu | 23.7 kN |
| Limiting speed (mechanical) | 4500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1520 g |
| Manufacturer designation | NTN NF2214EA |
| 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 & NF2200-series range
| Bore d | 2.756 in |
|---|---|
| Outer diameter D | 4.921 in |
| Width B | 1.22 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 27.5 mm |
| Smallest bore in NF2200-series | 20 mm |
| Largest outer diameter in NF2200-series | 170 mm |
| Width range across NF2200-series | 18–43 mm |
| Bore position in NF2200-series (smallest first) | 11 of 16 |
| Bore above smallest NF2200-series size | 50 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NF2214EA | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; standard interchange — confirm clearance class and precision with the supplier. |
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 NF2214EA model number is decoded
NF2214EA 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 184 kN dynamic rating in the 70 mm bore. On the NTN nameplate NF states which ring carries the ribs, which determines whether NF2214EA floats or locates; the numeric remainder is the ISO 15 series and 70 mm bore reference, not a fit or clearance instruction. With C 184 kN and C0 194 kN (C0/C ≈ 1.05) the bearing is proportioned for heavy radial load; the NF design gives one-direction axial guidance via its single outer-ring rib. Speed ratio check: limiting 4,500 r/min is .73 of the 6,200 r/min oil value for NF2214EA; grease-churn heating closes that gap as fill quantity rises. Provide axial location with an adjacent locating bearing rather than expecting the float cylindrical set to hold thrust on the 70 mm shaft.
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
- grease starvation and cage drag when relubrication intervals are extended past the grease life
- edge loading from shaft deflection beyond the 3–4 arc-minute alignment limit
- brinelling from static overload or impact during handling
Selection pitfalls — read before you substitute
- Induction-heat the 70 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 125 mm raceway.
- Do not replace NF2214EA with a deep-groove ball bearing on rating alone: line contact gives 184 kN radial capacity but the bearing cannot carry the thrust duty a ball bearing can and misalignment tolerance is only 3–4 arc-minutes.
- Wide (22/23) and light (10/49) executions at 70 mm bore share bore but not OD/width; check the full NF2200 series code before substituting, because housing and shoulder geometry will not interchange.
- The 27.5 mm section at 70 mm bore leaves a narrow oil path; with the EA pressed-steel-cage cage the relubrication groove and oil-level design must keep grease from churning in the 31 mm-wide cavity.
- Minimum radial load is frequently missed in oversized motor and fan selections: an underloaded NF2214EA skids at 4,500 r/min and fails by smearing long before L10 fatigue.
- The 184/194 kN ratings, 23.7 kN Pu and 1520 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NF2214EA (EA pressed-steel-cage 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 NF2214EA?
NF2214EA is an NTN NF single-row cylindrical roller bearing to ISO 15: 70 mm bore, 125 mm OD and 31 mm width (2.756 × 4.921 × 1.22 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 184 kN, C0 194 kN, Pu 23.7 kN, grease limiting speed 4,500 r/min, oil 6,200 r/min, mass about 1520 g. It is open, with the EA high-capacity 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. NF2214EA is one integral rib on each ring — separable inner ring with single-direction axial guidance and a defined shaft position.
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. This page's bearing carries the EA pressed-steel-cage execution.
Can NF2214EA take axial load and locate a shaft?
the NF design gives one-direction axial guidance via its single outer-ring rib. The loose rib ring still only suits light/short-duration axial guidance; heavy thrust belongs to a dedicated thrust bearing.
What do Fw and Ew mean for NF2214EA?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 83.5 mm, Ew 113.5 mm. The nominal bore/OD remain 70/125 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 4,500 r/min grease / 6,200 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.