NF407 bearing: complete specifications & equivalents
The NF407 is a ISO 15 radial bearing sized 35 x 100 x 25 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 35 mm |
| Outer diameter D | 100 mm |
| Width B | 25 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 83.5 kN |
| Basic static load rating C0 | 69 kN |
| Fatigue load limit Pu | 8.4 kN |
| Limiting speed (mechanical) | 6400 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 965 g |
| Manufacturer designation | NTN NF407 |
| 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 & NF400-series range
| Bore d | 1.378 in |
|---|---|
| Outer diameter D | 3.937 in |
| Width B | 0.984 in |
| ISO bore code | 07 |
| Radial section height (D−d)/2 | 32.5 mm |
| Smallest bore in NF400-series | 25 mm |
| Largest outer diameter in NF400-series | 200 mm |
| Width range across NF400-series | 21–48 mm |
| Bore position in NF400-series (smallest first) | 3 of 12 |
| Bore above smallest NF400-series size | 10 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NF407 | 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 NF407 model number is decoded
NF407 is an NTN NF cylindrical roller bearing: one integral rib on each ring — separable inner ring with single-direction axial guidance and a defined shaft position, inside the 35×100×25 mm ISO 15 envelope. The leading NF defines the rib arrangement (one rib on each ring); the dimension-series digits and the two-digit bore code resolve to 35 mm, with 100 mm OD and 25 mm width from the ISO 15 general plan. At 7,500 r/min with oil versus 6,400 r/min with grease (a 1,100 r/min band), lubrication choice for NF407 is a thermal decision, not just a sealing one. Speed ratio check: limiting 6,400 r/min is .85 of the 7,500 r/min oil value for NF407; grease-churn heating closes that gap as fill quantity rises. Heat the inner ring to max 120 °C for the 35 mm interference fit and support the ring face square during fitting; cocking over a keyway brinells the raceway before first rotation.
Typical equipment & failure modes
Common applications
- pump and compressor crankshafts and rotors
- machine-tool gearbox and spindle radial sets
- material-handling drum and wheel shafts
- papermaking and printing auxiliary drives
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
- hard-particle indentation of raceways in unfiltered oil or open arrangements
- rolling-contact fatigue after the catalogue L10 life is exceeded
Selection pitfalls — read before you substitute
- On this 35 mm bore, shaft thermal growth can preload the inner ring if the fit is too tight; verify residual interference at temperature and confirm the float ring still slides after mounting NF407.
- If the shaft must be located both ways, do not use NF407 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
- If the shaft must be located both ways, do not use NF407 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
- The NF rib arrangement is not interchangeable with another prefix on the same 35 mm seat: one rib on each ring. Swapping NU for NJ changes axial location behaviour even though the 100×25 mm envelope matches.
- Grease limiting speed 6,400 r/min and oil 7,500 r/min are different limits for NF407: the first is the cage/lubricant mechanical ceiling, the second assumes real oil flow rather than an oil bath.
- The 83.5/69 kN ratings, 8.4 kN Pu and 965 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NF407 (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 NF407?
NF407 is an NTN NF single-row cylindrical roller bearing to ISO 15: 35 mm bore, 100 mm OD and 25 mm width (1.378 × 3.937 × 0.984 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 83.5 kN, C0 69 kN, Pu 8.4 kN, grease limiting speed 6,400 r/min, oil 7,500 r/min, mass about 965 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. NF407 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. NF407 is supplied in the standard open execution shown in the table.
Can NF407 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 NF407?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 53 mm, Ew 83 mm. The nominal bore/OD remain 35/100 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 6,400 r/min grease / 7,500 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.