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One-way clutch bearings HF series (HF0812, HF1012, HF1216, HF2016): roller-set bore Fw, OD, width, torque
What are the dimensions of an HF0812, HF1012, HF1216 or HF2016 one-way clutch needle bearing: bore Fw, outside diameter, width and torque? · Standard part · basis: NTN one-way clutch table (Fw, D, C, Md) with HF1012 checked against Simply Bearings; numbers only
Also called: HF0812 dimensions, HF1012 dimensions, HF1216 dimensions, HF1416 dimensions, HF1616 dimensions, HF2016 dimensions, HF2520 dimensions, HF0612 dimensions, HF0406 dimensions, HF0812 8x12x12, HF1012 10x14x12, one way needle bearing, one way clutch bearing sizes, freewheel needle bearing, ratchet bearing 10mm, HF vs HK needle bearing, HF1012 torque, HF0812 torque
Exact dimensions. True size, with no tolerance added.
- sizes
- 12 in table
Notes
- HF is a one-way needle roller clutch in a drawn-cup shell: it locks the shaft in one direction and freewheels in the other (indexers, ratchets, backstops, hand-crank winches, fan and printer drives). It is a press fit in a housing bore of D; Fw is the circle inscribed to the rollers, so the shaft must be hardened and ground to that size (the HF number is Fw then width: HF1012 = 10 x 12). The matching radial bearing in the table is the HK drawn-cup needle bearing of the same Fw (page: needle-roller-bearings-hk-series).
- Numbers: NTN's one-way clutch table (Fw, D, C, torque Md, mass, matching HK bearing) for HF0612 to HF3520. HF1012 (10 x 14 x 12, 5.3 N m, r min 0.3, width tolerance 0/-0.3) is also on Simply Bearings, and HF0406 (4 x 8 x 6, 0.34 N m) only there, labelled as a non-standard bore. NTN's table has no HF0406, HF0306, HF0608 or HF2020. The NSK HF0812 page could not be read, so there is no maker CAD link here.
- Numbers only, no files: the cup lip, roller and spring geometry and the chamfers are not published in the tables read (only HF1012 and HF0406 have an r min, both from one distributor).
- Left out: the maximum speed (only one distributor's value was read), HFL / HFZ variants, the radial-load part numbers printed in the NTN table, and the HK bearing dimensions (see the HK page).
One-way clutch bearings HF series (HF0812, HF1012, HF1216, HF2016)… size chart
| clutch | roller-set bore Fw, mm | OD D, mm | width C, mm | torque Md, N m | matching radial bearing (HK) | mass, kg | source |
|---|---|---|---|---|---|---|---|
| HF0612 | 6 | 10 | 12 | 1.76 | HK0609T2 | 0.003 | NTN |
| HF0812 | 8 | 12 | 12 | 3.15 | HK0810 | 0.0035 | NTN |
| HF1012 | 10 | 14 | 12 | 5.30 | HK1010 | 0.004 | NTN + Simply Bearings (r min 0.3) |
| HF1216 | 12 | 18 | 16 | 12.2 | HK1212 | 0.0116 | NTN |
| HF1416 | 14 | 20 | 16 | 17.3 | HK1412 | 0.013 | NTN |
| HF1616 | 16 | 22 | 16 | 20.5 | HK1612 | 0.014 | NTN |
| HF1816 | 18 | 24 | 16 | 24.1 | HK1812 | 0.0155 | NTN |
| HF2016 | 20 | 26 | 16 | 28.5 | HK2012 | 0.017 | NTN |
| HF2520 | 25 | 32 | 20 | 66 | HK2512 | 0.0309 | NTN |
| HF3020 | 30 | 37 | 20 | 90 | HK3012 | 0.036 | NTN |
| HF3520 | 35 | 42 | 20 | 121 | HK3512 | 0.040 | NTN |
| HF0406 | 4 | 8 | 6 | 0.34 | — | 0.001 | Simply Bearings only (r min 0.3; listed as non-standard bore) |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| NTN (via BDS Bearing knowledge base) | One-way clutches, tension pulleys, bottom roller bearings: HF type Fw, D, C, torque Md, matching HK bearing | web | Publisher's page; dimensions are facts |
| Simply Bearings | HF1012 one-way needle roller clutch: Fw 10, D 14, C 12 (0/-0.3), r min 0.3, 5.3 N m | web | Publisher's page; dimensions are facts |
| Simply Bearings | HF0406 one-way needle roller clutch: Fw 4, D 8, C 6, r min 0.3, 0.34 N m (listed as a non-standard bore) | web | Publisher's page; dimensions are facts |
| McMaster-Carr | Needle bearings (free STEP/IGES per part, for your own design use; no redistribution) | STEP, IGES, PDF | McMaster-Carr site terms: personal design use, no redistribution verify |
Xem scan
File coming
No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=one-way-clutch-bearings-hf-series
Fits with




Questions
What are the dimensions of an HF0812 one-way clutch bearing?
Roller-set bore Fw 8, OD 12, width 12 mm; torque 3.15 N m (NTN).
What are the dimensions of an HF1012?
Fw 10, OD 14, width 12 mm; torque 5.3 N m; r min 0.3 (Simply Bearings).
What do the numbers in HF1216 mean?
Fw 12 mm and width 16 mm; the OD is 18 mm.
Which HK bearing goes with an HF1012?
HK1010 (NTN pairs each HF clutch with the HK of the same Fw).
Do the makers agree on HF1012?
Yes: 10 x 14 x 12 mm and 5.3 N m on NTN and Simply Bearings.