{ "version": "2026-10-20", "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.", "slug": "ball-screw-end-supports-bk-bf-fk-ff", "name": "Ball screw end supports BK10, BK12, BK15, BF10, BF12, BF15, FK, FF: bore, bearing, base hole spacing, height (HIWIN tables)", "kind": "standard", "category": "Hardware", "group": "Bearings, rails & motion", "year": null, "question": "What are the dimensions of BK12 and BF12 ball screw end supports (and BK10, BK15, FK12, FF12): bore, bearing, height, base width and hole spacing?", "tags": [ "ball screw", "end support", "bk12", "bf12", "bk10", "bk15", "fk12", "ff12", "support unit", "sfu1605", "cnc" ], "aliases": [ "bk12 dimensions", "bf12 dimensions", "bk10 dimensions", "bf10 dimensions", "bk15 dimensions", "bf15 dimensions", "bk12 bf12 hole spacing", "bk12 base hole spacing 46", "fk12 dimensions", "ff12 dimensions", "ball screw end support dimensions", "ball screw support block cad", "bk12 bf12 for sfu1605", "bk10 bf10 sfu1204", "bk15 bf15 sfu2005", "fixed end support block ball screw", "bk bf support unit stl" ], "overall_mm": { "length": null, "width": null, "height": null }, "official_cad": false, "xem_status": "not-scanned", "les": false, "free_files": 0, "url": "https://xemstudio.com/objects/ball-screw-end-supports-bk-bf-fk-ff/", "sheet_txt": "https://xemstudio.com/objects/ball-screw-end-supports-bk-bf-fk-ff/sheet.txt", "sheet": { "basis": "HIWIN support-unit catalogue; BF rows checked against TFL Bearing's independent table, BK rows against a distributor copy; McMaster-Carr linked for CAD (inch product)", "overall_mm": { "length": null, "width": null, "height": null }, "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." ], "table": { "columns": [ "unit", "bore d1, mm", "bearing", "L (length along the screw), mm", "B (width), mm", "H, mm", "b, mm", "h (centre height), mm", "B1, mm", "H1, mm", "E, mm", "P, mm", "d2 / X / Y × Z (as printed), mm", "lock thread × T / snap ring" ], "rows": [ [ "BK10", "10", "7000A", "25", "60", "39", "30", "22", "34", "32.5", "15", "46", "Ø5.5 / Ø6.6 / Ø10.8 × 5", "M3 × 16" ], [ "BK12", "12", "7001A", "25", "60", "43", "30", "25", "34", "32.5", "18", "46", "Ø5.5 / Ø6.6 / Ø10.8 × 1.5", "M4 × 19" ], [ "BK15", "15", "7002A", "27", "70", "48", "35", "28", "40", "38", "18", "54", "Ø5.5 / Ø6.6 / Ø11 × 6.5", "M4 × 22" ], [ "BK17", "17", "7203A", "35", "86", "64", "43", "39", "50", "55", "28", "68", "Ø6.6 / Ø9 / Ø14 × 8.5", "M4 × 24" ], [ "BK20", "20", "7004A", "35", "88", "60", "44", "34", "52", "50", "22", "70", "Ø6.6 / Ø9 / Ø14 × 8.5", "M4 × 30" ], [ "BK25", "25", "7205A", "42", "106", "80", "53", "48", "64", "70", "33", "85", "Ø9 / Ø11 / Ø17 × 11", "M6 × 35" ], [ "BK30", "30", "7206A", "45", "128", "89", "64", "51", "76", "78", "33", "102", "Ø11 / Ø14 / Ø20 × 13", "M6 × 40" ], [ "BK35", "35", "7207B", "50", "140", "96", "70", "52", "88", "79", "35", "114", "Ø11 / Ø14 / Ø20 × 13", "M6 × 50" ], [ "BK40", "40", "7208B", "61", "160", "110", "80", "60", "100", "90", "37", "130", "Ø14 / Ø18 / Ø26 × 17.5", "M6 × 50" ], [ "BF10 (bore 8)", "8", "608ZZ", "20", "60", "39", "30", "22", "34", "32.5", "15", "46", "Ø5.5 / Ø6.6 / Ø10.8 × 5", "snap ring S08" ], [ "BF12 (bore 10)", "10", "6000ZZ", "20", "60", "43", "30", "25", "34", "32.5", "18", "46", "Ø5.5 / Ø6.6 / Ø10.8 × 1.5", "snap ring S10" ], [ "BF15 (bore 15)", "15", "6002ZZ", "20", "70", "48", "35", "28", "40", "38", "18", "54", "Ø5.5 / Ø6.6 / Ø11 × 6.5", "snap ring S15" ], [ "BF17 (bore 17)", "17", "6203ZZ", "23", "86", "64", "43", "39", "50", "55", "28", "68", "Ø6.6 / Ø9 / Ø14 × 8.5", "snap ring S17" ], [ "BF20 (bore 20)", "20", "6004ZZ", "26", "88", "60", "44", "34", "52", "50", "22", "70", "Ø6.6 / Ø9 / Ø14 × 8.5", "snap ring S20" ], [ "BF25 (bore 25)", "25", "6205ZZ", "30", "106", "80", "53", "48", "64", "70", "33", "85", "Ø9 / Ø11 / Ø17 × 11", "snap ring S25" ], [ "BF30 (bore 30)", "30", "6206ZZ", "32", "128", "89", "64", "51", "76", "78", "33", "102", "Ø11 / Ø14 / Ø20 × 13", "snap ring S30" ], [ "BF35 (bore 35)", "35", "6207ZZ", "32", "140", "96", "70", "52", "88", "79", "35", "114", "Ø11 / Ø14 / Ø20 × 13", "snap ring S35" ], [ "BF40 (bore 40)", "40", "6208ZZ", "37", "160", "110", "80", "60", "100", "90", "37", "130", "Ø14 / Ø18 / Ø26 × 17.5", "snap ring S40" ], [ "FK6", "6", "706A", "20", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 20, H 7, F 13, E 22, D 22, A 36, PCD 28, B 28; FK method A: 5.5 / 3.5 / 1.5; B: 6.5 / 4.5 / 0.5; holes Ø3.4 / Ø6.5 × 4", "M3 × 12" ], [ "FK8", "8", "708A", "23", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 23, H 9, F 14, E 26, D 28, A 43, PCD 35, B 35; FK method A: 7 / 4 / 1.5; B: 8 / 5 / 0.5; holes Ø3.4 / Ø6.5 × 4", "M3 × 14" ], [ "FK10", "10", "7000A", "27", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 27, H 10, F 17, E 29.5, D 34, A 52, PCD 42, B 42; FK method A: 7.5 / 5 / 0.5; B: 8.5 / 6 / -0.5; holes Ø4.5 / Ø8 × 5", "M3 × 16" ], [ "FK12", "12", "7001A", "27", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 27, H 10, F 17, E 29.5, D 36, A 54, PCD 44, B 44; FK method A: 7.5 / 5 / 0.5; B: 8.5 / 6 / -0.5; holes Ø4.5 / Ø8 × 5", "M4 × 19" ], [ "FK15", "15", "7002A", "32", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 32, H 15, F 17, E 36, D 40, A 63, PCD 50, B 52; FK method A: 10 / 6 / 4; B: 12 / 8 / 2; holes Ø5.5 / Ø9.5 × 6", "M4 × 22" ], [ "FK17", "17", "7203A", "45", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 45, H 22, F 23, E 47, D 50, A 77, PCD 62, B 61; FK method A: 11 / 9 / 1; B: 14 / 12 / -2; holes Ø6.6 / Ø11 × 10", "M4 × 24" ], [ "FK20", "20", "7204A", "52", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 52, H 22, F 30, E 50, D 57, A 85, PCD 70, B 68; FK method A: 8 / 10 / 1; B: 12 / 14 / -3; holes Ø6.6 / Ø11 × 10", "M4 × 30" ], [ "FK25", "25", "7205A", "57", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 57, H 27, F 30, E 60, D 63, A 98, PCD 80, B 79; FK method A: 13 / 10 / 5; B: 20 / 17 / -2; holes Ø9 / Ø15 × 13", "M6 × 35" ], [ "FK30", "30", "7206A", "62", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 62, H 30, F 32, E 61, D 75, A 117, PCD 95, B 93; FK method A: 11 / 12 / -3; B: 17 / 18 / -9; holes Ø11 / Ø17.5 × 15", "M6 × 40" ], [ "FF6", "6", "606ZZ", "10", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 10, H 6, F 4, E —, D 22, A 36, PCD 28, B 28; FK method —; holes Ø3.4 / Ø6.5 × 4", "snap ring S06" ], [ "FF8", "8", "608ZZ", "12", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 12, H 7, F 5, E —, D 28, A 43, PCD 35, B 35; FK method —; holes Ø3.4 / Ø6.5 × 4", "snap ring S08" ], [ "FF10", "10", "6000ZZ", "15", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 15, H 7, F 8, E —, D 34, A 52, PCD 42, B 42; FK method —; holes Ø4.5 / Ø8 × 4", "snap ring S10" ], [ "FF15", "15", "6002ZZ", "17", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 17, H 9, F 8, E —, D 40, A 63, PCD 50, B 52; FK method —; holes Ø5.5 / Ø9.5 × 5.5", "snap ring S15" ], [ "FF17", "17", "6203ZZ", "20", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 20, H 11, F 9, E —, D 50, A 77, PCD 62, B 61; FK method —; holes Ø6.6 / Ø11 × 6.5", "snap ring S17" ], [ "FF20", "20", "6204ZZ", "20", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 20, H 11, F 9, E —, D 57, A 85, PCD 70, B 68; FK method —; holes Ø6.6 / Ø11 × 6.5", "snap ring S20" ], [ "FF25", "25", "6205ZZ", "24", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 24, H 14, F 10, E —, D 63, A 98, PCD 80, B 79; FK method —; holes Ø9 / Ø14 × 8.5", "snap ring S25" ], [ "FF30", "30", "6206ZZ", "27", "—", "—", "—", "—", "—", "—", "—", "—", "flange: L 27, H 18, F 9, E —, D 75, A 117, PCD 95, B 93; FK method —; holes Ø11 / Ø17 × 11", "snap ring S30" ] ] } }, "sheet_text": "Ball screw end supports BK10, BK12, BK15, BF10, BF12, BF15, FK, FF: bore, bearing, base hole spacing, height (HIWIN tables) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/ball-screw-end-supports-bk-bf-fk-ff/ (sheet CC BY 4.0)\nBasis: HIWIN support-unit catalogue; BF rows checked against TFL Bearing's independent table, BK rows against a distributor copy; McMaster-Carr linked for CAD (inch product)\nCatalog version: 2026-10-20\n\nSizes: see table below\n- 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).\n- 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.\n- 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.\n- 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.\n- 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.\n- 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.\n\nunit bore d1, mm bearing L (length along the screw), mm B (width), mm H, mm b, mm h (centre height), mm B1, mm H1, mm E, mm P, mm d2 / X / Y × Z (as printed), mm lock thread × T / snap ring\nBK10 10 7000A 25 60 39 30 22 34 32.5 15 46 Ø5.5 / Ø6.6 / Ø10.8 × 5 M3 × 16\nBK12 12 7001A 25 60 43 30 25 34 32.5 18 46 Ø5.5 / Ø6.6 / Ø10.8 × 1.5 M4 × 19\nBK15 15 7002A 27 70 48 35 28 40 38 18 54 Ø5.5 / Ø6.6 / Ø11 × 6.5 M4 × 22\nBK17 17 7203A 35 86 64 43 39 50 55 28 68 Ø6.6 / Ø9 / Ø14 × 8.5 M4 × 24\nBK20 20 7004A 35 88 60 44 34 52 50 22 70 Ø6.6 / Ø9 / Ø14 × 8.5 M4 × 30\nBK25 25 7205A 42 106 80 53 48 64 70 33 85 Ø9 / Ø11 / Ø17 × 11 M6 × 35\nBK30 30 7206A 45 128 89 64 51 76 78 33 102 Ø11 / Ø14 / Ø20 × 13 M6 × 40\nBK35 35 7207B 50 140 96 70 52 88 79 35 114 Ø11 / Ø14 / Ø20 × 13 M6 × 50\nBK40 40 7208B 61 160 110 80 60 100 90 37 130 Ø14 / Ø18 / Ø26 × 17.5 M6 × 50\nBF10 (bore 8) 8 608ZZ 20 60 39 30 22 34 32.5 15 46 Ø5.5 / Ø6.6 / Ø10.8 × 5 snap ring S08\nBF12 (bore 10) 10 6000ZZ 20 60 43 30 25 34 32.5 18 46 Ø5.5 / Ø6.6 / Ø10.8 × 1.5 snap ring S10\nBF15 (bore 15) 15 6002ZZ 20 70 48 35 28 40 38 18 54 Ø5.5 / Ø6.6 / Ø11 × 6.5 snap ring S15\nBF17 (bore 17) 17 6203ZZ 23 86 64 43 39 50 55 28 68 Ø6.6 / Ø9 / Ø14 × 8.5 snap ring S17\nBF20 (bore 20) 20 6004ZZ 26 88 60 44 34 52 50 22 70 Ø6.6 / Ø9 / Ø14 × 8.5 snap ring S20\nBF25 (bore 25) 25 6205ZZ 30 106 80 53 48 64 70 33 85 Ø9 / Ø11 / Ø17 × 11 snap ring S25\nBF30 (bore 30) 30 6206ZZ 32 128 89 64 51 76 78 33 102 Ø11 / Ø14 / Ø20 × 13 snap ring S30\nBF35 (bore 35) 35 6207ZZ 32 140 96 70 52 88 79 35 114 Ø11 / Ø14 / Ø20 × 13 snap ring S35\nBF40 (bore 40) 40 6208ZZ 37 160 110 80 60 100 90 37 130 Ø14 / Ø18 / Ø26 × 17.5 snap ring S40\nFK6 6 706A 20 — — — — — — — — flange: L 20, H 7, F 13, E 22, D 22, A 36, PCD 28, B 28; FK method A: 5.5 / 3.5 / 1.5; B: 6.5 / 4.5 / 0.5; holes Ø3.4 / Ø6.5 × 4 M3 × 12\nFK8 8 708A 23 — — — — — — — — flange: L 23, H 9, F 14, E 26, D 28, A 43, PCD 35, B 35; FK method A: 7 / 4 / 1.5; B: 8 / 5 / 0.5; holes Ø3.4 / Ø6.5 × 4 M3 × 14\nFK10 10 7000A 27 — — — — — — — — flange: L 27, H 10, F 17, E 29.5, D 34, A 52, PCD 42, B 42; FK method A: 7.5 / 5 / 0.5; B: 8.5 / 6 / -0.5; holes Ø4.5 / Ø8 × 5 M3 × 16\nFK12 12 7001A 27 — — — — — — — — flange: L 27, H 10, F 17, E 29.5, D 36, A 54, PCD 44, B 44; FK method A: 7.5 / 5 / 0.5; B: 8.5 / 6 / -0.5; holes Ø4.5 / Ø8 × 5 M4 × 19\nFK15 15 7002A 32 — — — — — — — — flange: L 32, H 15, F 17, E 36, D 40, A 63, PCD 50, B 52; FK method A: 10 / 6 / 4; B: 12 / 8 / 2; holes Ø5.5 / Ø9.5 × 6 M4 × 22\nFK17 17 7203A 45 — — — — — — — — flange: L 45, H 22, F 23, E 47, D 50, A 77, PCD 62, B 61; FK method A: 11 / 9 / 1; B: 14 / 12 / -2; holes Ø6.6 / Ø11 × 10 M4 × 24\nFK20 20 7204A 52 — — — — — — — — flange: L 52, H 22, F 30, E 50, D 57, A 85, PCD 70, B 68; FK method A: 8 / 10 / 1; B: 12 / 14 / -3; holes Ø6.6 / Ø11 × 10 M4 × 30\nFK25 25 7205A 57 — — — — — — — — flange: L 57, H 27, F 30, E 60, D 63, A 98, PCD 80, B 79; FK method A: 13 / 10 / 5; B: 20 / 17 / -2; holes Ø9 / Ø15 × 13 M6 × 35\nFK30 30 7206A 62 — — — — — — — — flange: L 62, H 30, F 32, E 61, D 75, A 117, PCD 95, B 93; FK method A: 11 / 12 / -3; B: 17 / 18 / -9; holes Ø11 / Ø17.5 × 15 M6 × 40\nFF6 6 606ZZ 10 — — — — — — — — flange: L 10, H 6, F 4, E —, D 22, A 36, PCD 28, B 28; FK method —; holes Ø3.4 / Ø6.5 × 4 snap ring S06\nFF8 8 608ZZ 12 — — — — — — — — flange: L 12, H 7, F 5, E —, D 28, A 43, PCD 35, B 35; FK method —; holes Ø3.4 / Ø6.5 × 4 snap ring S08\nFF10 10 6000ZZ 15 — — — — — — — — flange: L 15, H 7, F 8, E —, D 34, A 52, PCD 42, B 42; FK method —; holes Ø4.5 / Ø8 × 4 snap ring S10\nFF15 15 6002ZZ 17 — — — — — — — — flange: L 17, H 9, F 8, E —, D 40, A 63, PCD 50, B 52; FK method —; holes Ø5.5 / Ø9.5 × 5.5 snap ring S15\nFF17 17 6203ZZ 20 — — — — — — — — flange: L 20, H 11, F 9, E —, D 50, A 77, PCD 62, B 61; FK method —; holes Ø6.6 / Ø11 × 6.5 snap ring S17\nFF20 20 6204ZZ 20 — — — — — — — — flange: L 20, H 11, F 9, E —, D 57, A 85, PCD 70, B 68; FK method —; holes Ø6.6 / Ø11 × 6.5 snap ring S20\nFF25 25 6205ZZ 24 — — — — — — — — flange: L 24, H 14, F 10, E —, D 63, A 98, PCD 80, B 79; FK method —; holes Ø9 / Ø14 × 8.5 snap ring S25\nFF30 30 6206ZZ 27 — — — — — — — — flange: L 27, H 18, F 9, E —, D 75, A 117, PCD 95, B 93; FK method —; holes Ø11 / Ø17 × 11 snap ring S30\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- HIWIN: Support units BK, BF, FK, FF: bore, bearing, all published dimensions and weights — web — Publisher's page; dimensions are facts — https://www.hiwin.com/wp-content/uploads//hiwin-support-units.pdf\n- Pneu-Hyd (HIWIN distributor): HIWIN BK series: bearing, load limits, main dimensions (same numbers as the HIWIN PDF) — web — Publisher's page; dimensions are facts — https://pneu-hyd.co.th/บอลสกรู—hiwin-ballscrews/support-units/support-units-bk-series.html\n- TFL Bearing: BK15 / BF15 end support block page: BF table (size, bore, T, W, W1, H, H1, P, P1, hole sizes) — web — Publisher's page; dimensions are facts — https://tflbearing.com/product/linear-ball-bearing/bk15-bf15-ball-screw-end-support-bearing-blocks-for-sfu-2005\n- Sorotec: Datasheet ball screws: SFU nut BN, FN, LN, DN1-DN3, TN, d1 for 1204 / 1605 / 1610 / 2005 / 2010 and the BK / FK pairing — web — Publisher's page; dimensions are facts — https://www.upload.sorotec.de/doku/manuals/Datasheet_Ball_Spindles_en_Soro.pdf\n- McMaster-Carr: End supports for lead screws and ball screws (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 license at link] — https://www.mcmaster.com/ball-screw-end-supports\n\nNo true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.\nAPI: https://xemstudio.com/api/geometry?object=ball-screw-end-supports-bk-bf-fk-ff\n", "sources": [ { "publisher": "HIWIN", "title": "Support units BK, BF, FK, FF: bore, bearing, all published dimensions and weights", "url": "https://www.hiwin.com/wp-content/uploads//hiwin-support-units.pdf", "formats": [ "web" ], "license": "Publisher's page; dimensions are facts", "license_verified": true, "hosted": false }, { "publisher": "Pneu-Hyd (HIWIN distributor)", "title": "HIWIN BK series: bearing, load limits, main dimensions (same numbers as the HIWIN PDF)", "url": "https://pneu-hyd.co.th/บอลสกรู—hiwin-ballscrews/support-units/support-units-bk-series.html", "formats": [ "web" ], "license": "Publisher's page; dimensions are facts", "license_verified": true, "hosted": false }, { "publisher": "TFL Bearing", "title": "BK15 / BF15 end support block page: BF table (size, bore, T, W, W1, H, H1, P, P1, hole sizes)", "url": "https://tflbearing.com/product/linear-ball-bearing/bk15-bf15-ball-screw-end-support-bearing-blocks-for-sfu-2005", "formats": [ "web" ], "license": "Publisher's page; dimensions are facts", "license_verified": true, "hosted": false }, { "publisher": "Sorotec", "title": "Datasheet ball screws: SFU nut BN, FN, LN, DN1-DN3, TN, d1 for 1204 / 1605 / 1610 / 2005 / 2010 and the BK / FK pairing", "url": "https://www.upload.sorotec.de/doku/manuals/Datasheet_Ball_Spindles_en_Soro.pdf", "formats": [ "web" ], "license": "Publisher's page; dimensions are facts", "license_verified": true, "hosted": false }, { "publisher": "McMaster-Carr", "title": "End supports for lead screws and ball screws (free STEP/IGES per part, for your own design use; no redistribution)", "url": "https://www.mcmaster.com/ball-screw-end-supports", "formats": [ "STEP", "IGES", "PDF" ], "license": "McMaster-Carr site terms: personal design use, no redistribution", "license_verified": false, "hosted": false } ], "xem": { "status": "not-scanned", "sheet_free": true, "mesh_price_usd": null, "step_price_usd": null, "tolerance_mm": null }, "related": [ "ball-screw-nuts-sfu", "shaft-couplers", "t8-lead-screw", "pillow-block-kp08", "deep-groove-ball-bearings-series", "retaining-rings-din-471-external" ], "fits": [], "dimensions": "exact (nominal, no tolerance added)", "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no tolerance added. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn. Typical accuracy by process and ISO 286 fits: https://xemstudio.com/tolerances/", "mating": [], "faq": [ { "q": "What are the base hole positions of a BK12?", "a": "Base width B 60, centre height h 25, hole pitch P 46 and E 18 (HIWIN letters), base holes Ø5.5 with Ø6.6 / Ø10.8 × 1.5 face counterbored holes; bore 12, bearing 7001A." }, { "q": "Which end supports go with an SFU1605?", "a": "BK12 on the fixed end and BF12 on the supported end (bore 10, bearing 6000ZZ)." }, { "q": "What bearing is in a BF12?", "a": "A 6000ZZ (bore 10) with an S10 snap ring; the BF12 name refers to the 12 mm screw end." }, { "q": "What are the dimensions of a BK10?", "a": "Bore 10, bearing 7000A, width 60, height 39, centre height 22, pitch P 46, length 25 (HIWIN)." } ], "files_license": null, "offers": [], "markdown": "https://xemstudio.com/objects/ball-screw-end-supports-bk-bf-fk-ff/index.md" }