HK2016F bearing: complete specifications & equivalents
The HK2016F is a ISO 3245 radial bearing sized 20 x 26 x 16 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 20 mm |
| Outer diameter D | 26 mm |
| Width B | 16 mm |
| Seal / shield | open |
| Basic dynamic load rating C | 12.5 kN |
| Basic static load rating C0 | 19.2 kN |
| Fatigue load limit Pu | 2.34 kN |
| Limiting speed (mechanical) | 8000 rpm |
| Mass | 19 g |
| Manufacturer designation | HK2016F |
| 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 | 0.787 in |
|---|---|
| Outer diameter D | 1.024 in |
| Width B | 0.63 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 3 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) | 16 of 24 |
| Bore above smallest HK-series size | 17 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the HK2016F model number is decoded
In the HK-series (ISO 3245), HK2016F is NTN's open-end drawn-cup needle roller bearing.Boundary dimensions are 20 mm under-roller diameter (Fw — the shaft journal acts as the raceway), 26 mm cup outside diameter and 16 mm width. 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. Automotive gearbox designers default to this class when the radial envelope is fixed: the cup keeps the casing compact without giving up the required rating. This size is frequently specified in motorcycle gear-selector mechanisms, where the shaft is short, the housing is cast around the bearing, and the roller set must survive repeated shock from shift forks. Grease for this size should be a soft NLGI 1 or 2 lithium-complex grade: the open cup lets the housing supply the lubricant, and a stiff grease will not flow back through the roller set after standstill.
Typical equipment & failure modes
Common applications
- compressor crankshaft supports
- agricultural machinery PTO drives
- universal joint and steering pivots
- intermittent duty with long standstill periods that invite false brinelling
Known failure patterns
- brinelling of the drawn cup from hammer blows during press-in mounting
- grease starvation in the open-end arrangement with no relubrication path
- raceway spalling on a shaft that was below the required 58–64 HRC hardness
Selection pitfalls — read before you substitute
- Press the drawn cup in with a mandrel bearing on the stamped face only — never hammer the cup or press through the rollers, that cracks or brinells the shell.
- Before pressing HK2016F in, verify the 20 mm housing seat is still round — extracting the old cup often pulls the bore, and the new thin shell will conform to any distortion.
- The cage in HK2016F 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 20 mm.
- The 16 mm standard width of HK2016F is the general-purpose section at 20 mm shaft; wider HK variants in the same 20×26 mm envelope carry more load and are not interchangeable if the housing width is fixed.
Frequently asked questions
Does HK2016F need a hardened shaft?
Either the 20 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 (IR17x20x16.5) so a standard unhardened shaft can be used.
What are the dimensions of a HK2016F needle roller bearing?
A HK2016F drawn-cup needle roller bearing has a 20 mm shaft diameter (Fw, under-roller diameter), 26 mm outside diameter and 16 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 HK2016F drawn-cup bearing?
Fw is the under-roller diameter — the diameter of the shaft journal on which the needle rollers run directly. For HK2016F, Fw = 20 mm, so the shaft must be machined to 20 mm, hardened to 58–64 HRC and ground, unless a separate IR inner ring is fitted.
Can a HK2016F needle roller bearing carry axial load?
No. Drawn-cup needle roller bearings like HK2016F 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.
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.