HK1015F bearing: complete specifications & equivalents
The HK1015F is a ISO 3245 radial bearing sized 10 x 14 x 15 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 10 mm |
| Outer diameter D | 14 mm |
| Width B | 15 mm |
| Seal / shield | open |
| Basic dynamic load rating C | 7.25 kN |
| Basic static load rating C0 | 9.4 kN |
| Fatigue load limit Pu | 1.14 kN |
| Limiting speed (mechanical) | 16000 rpm |
| Mass | 6 g |
| Manufacturer designation | HK1015F |
| Standard | ISO 3245 |
| Catalog version | CAT. No. 2203-3/E 2024 |
| Last verified | 2026-09-25 |
Source: catalog reference (CAT. No. 2203-3/E 2024) · extracted 2026-09-25
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (CAT. No. 2203-3/E 2024); 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 & HK-series range
| Bore d | 0.394 in |
|---|---|
| Outer diameter D | 0.551 in |
| Width B | 0.591 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 2 mm |
| Smallest bore in HK-series | 3 mm |
| Largest outer diameter in HK-series | 58 mm |
| Width range across HK-series | 6–38 mm |
| Bore position in HK-series (smallest first) | 8 of 24 |
| Bore above smallest HK-series size | 7 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the HK1015F model number is decoded
As an open-end drawn-cup needle roller bearing in the HK-series (ISO 3245), NTN HK1015F is built around a thin hardened steel cup.Its printed envelope — 10 mm under-roller diameter, 14 mm outside diameter, 15 mm width — is fixed by ISO 3245; the 10 mm figure is the shaft journal itself, which carries the rollers directly. There is no separate inner ring — the thin-walled cup is drawn from sheet steel, hardened, and press-fitted into the housing, giving the smallest radial section of any rolling bearing at this shaft size. The F suffix marks NTN's caged drawn-cup execution: a formed steel cage spaces the rollers, lowering friction versus full-complement drawn cups. This is the classic two-wheeler and small-engine size class: the cup replaces a bulky machined bearing and lets the gearbox casing shrink around it. Industrial sewing machines and textile equipment run this size on their shuttle and needle-bar drive shafts, where the compact radial section keeps the arm profile slim. Shaft tolerance for this size is h5 or j5: the roller complement needs a controlled radial clearance, and a shaft ground to general-purpose tolerances can leave the bearing either slack or pinched.
Typical equipment & failure modes
Common applications
- automotive accessory drives
- lawn and garden equipment spindles
- motorcycle and scooter transmissions
- shock-loaded start-stop service such as clutch and kick-starter mechanisms
Known failure patterns
- edge loading and needle skewing under shaft misalignment or deflection
- cage wear or fracture from sustained operation near the limiting speed
- cup cracking from an oval or tapered housing bore distorting the thin shell
Selection pitfalls — read before you substitute
- The HK1015F drawn cup is a thin shell that takes the shape of its housing: the housing bore must be machined to tolerance (typically N6/N7 for steel housings) — a worn or oval seat distorts the cup and cuts life.
- With no inner ring, HK1015F reads the 10 mm shaft surface as its raceway: hardness 58–64 HRC and a ground finish are prerequisites, not recommendations.
- The cage in HK1015F guides the rollers but is not a seal: it retains nothing against dust or washdown, so the housing still needs its own sealing arrangement at 10 mm.
- The 15 mm standard width of HK1015F is the general-purpose section at 10 mm shaft; wider HK variants in the same 10×14 mm envelope carry more load and are not interchangeable if the housing width is fixed.
- Drawn-cup needle bearings carry radial load only: HK1015F provides no axial shaft location — use separate thrust washers or a locating bearing for axial forces.
Frequently asked questions
What duty conditions suit a HK1015F drawn-cup bearing?
HK1015F is typically specified for dirty environments where the open ends rely entirely on the housing seals; match the grease/oil speed limits (16000/24000 rpm) and radial load against the actual duty before finalizing.
What are the dimensions of a HK1015F needle roller bearing?
A HK1015F drawn-cup needle roller bearing has a 10 mm shaft diameter (Fw, under-roller diameter), 14 mm outside diameter and 15 mm width, per ISO 3245 boundary dimensions. It has no inner ring — the shaft journal serves as the raceway.
What does Fw mean on a HK1015F drawn-cup bearing?
Fw is the under-roller diameter — the diameter of the shaft journal on which the needle rollers run directly. For HK1015F, Fw = 10 mm, so the shaft must be machined to 10 mm, hardened to 58–64 HRC and ground, unless a separate IR inner ring is fitted.
Can a HK1015F needle roller bearing carry axial load?
No. Drawn-cup needle roller bearings like HK1015F carry radial load only and provide no axial shaft location. Axial forces must be carried by separate thrust washers or a locating bearing in the arrangement.
Does HK1015F need a hardened shaft?
Either the 10 mm shaft journal must be hardened to 58–64 HRC and ground to Ra ≤ 0.2 µm, or you can fit the matching inner ring (IR7x10x16) so a standard unhardened shaft can be used.
Reviewed & verified by the MPN Base engineering desk against source catalog CAT. No. 2203-3/E 2024 on 2026-09-25. Read our editorial & correction policy.