Ball screw end supports BK10, BK12, BK15, BF10, BF12, BF15, FK, FF: bore, bearing, base hole spacing, height (HIWIN tables)

sizes

35 in table

Notes

• BK / BF and FK / FF are the support blocks that hold the machined ends of a ball screw (or lead screw): BK / FK is the fixed end (a pair of angular-contact bearings 7000A to 7208B, axial load both ways), BF / FF the supported end (a single deep-groove bearing 608ZZ to 6208ZZ with a snap ring, axial float). BK / BF are the square (bracket) blocks with base holes; FK / FF are the round-flange blocks that bolt to a plate bored for the spigot. A pair BK12 + BF12 holds an SFU1605 / SFU1610 screw, BK10 + BF10 an SFU1204, BK15 + BF15 an SFU2005 (Sorotec's pairing).
• Numbers: HIWIN's support-unit catalogue for all four families, tabulated here exactly as the columns are printed (L, L1 to L3, K, B, H, b, h, B1, H1, E, P, C1, C2, d2, X, Y, Z, M, T for BK; the same without the bearing-side letters for BF; L, H, F, E, D, A, PCD, B, L1 / T1 / K1, L2 / T2 / K2, X, Y, Z for FK; L, H, F, D, A, PCD, B, X, Y, Z for FF). The catalogue defines the letters only in its drawings, so the column headings are shown as printed and not interpreted.
• Cross-checks: the BK rows equal the same table on Pneu-Hyd's HIWIN page (a copy of the same numbers; L2 of the 40 mm unit reads 79 there where the HIWIN PDF prints 76; the PDF value is shown first, 79 is noted). The BF rows (bores 8 to 40) equal an independent BF table on TFL Bearing's page for every column (TFL's hole diameter column is 0.3 mm below HIWIN's X on every size, e.g. 6.3 against 6.6; TFL also prints Z = 8.6 for BF17 and BF20 against HIWIN 8.5, and 17.5 for the BF25 counterbore against HIWIN 17; both values are reported and HIWIN's are tabulated. TFL's BF20 row prints bore 10, a typo). McMaster-Carr's end supports (inch rows read: bore 23/64 to 1-3/16 in, height 2 to 3-5/8 in, centre height 1 to 1-7/8 in, width 2-3/4 to 6-1/2 in, 6 face holes) are a different, inch product and are not mixed in; they are linked for CAD.
• BF / FF bore naming: the BF10 / BF12 / BF15 designations carry the screw-end size, not the bore: BF10 has an 8 mm bore (608ZZ), BF12 a 10 mm bore (6000ZZ), BF15 a 15 mm bore (6002ZZ). HIWIN states that the model suffix is not the bore for BF / FF. HIWIN's FF table has bores 6, 8, 10, 15, 17, 20, 25, 30 only (no FF12 row). The table above lists FF by bore; use the bearing column to check against the part.
• Files: none. The blocks are castings whose outline between the printed dimensions is not tabulated (the bracket profile, the bore spigots and the lock-nut pocket), so any solid would be invented.
• Left out: BK / BF 8 and 6, the 45 and 50 mm sizes, EK / EF (compact) and SK / SF blocks, HIWIN's WBK series, bearing load ratings and weights, pre-tension torque values.

Ball screw end supports BK10, BK12, BK15, BF10, BF12, BF15, FK, FF… size chart

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

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.

Plain text: sheet.txt · JSON: /api/geometry?object=ball-screw-end-supports-bk-bf-fk-ff

Fits with

Free

Ball screw nuts SFU1204, SFU1605, SFU1610, SFU2005: flange diameter, bolt circle, hole size, flats and length (SFU2010 length)5 sizes★ sheetFree

Flexible shaft couplers, 5–10 mm bores6 sizes★ 6 filesFree

T8 lead screw Tr8×8 envelope, 100 to 400 mm6 sizes★ 6 filesFree

Pillow block KP08 envelope with a 608 pocket5 sizes★ 1 fileFree

Deep-groove ball bearings, series 60, 62, 63, 68 and 69: 6000 to 6310 (ISO 15)55 sizes★ 55 filesFree

Retaining rings DIN 471 (external, for shafts): ring dimensions and groove diameter d2 × width m, 3 to 100 mm56 sizes★ 11 files