176 TEL: 01827 288122 sales@wmh-trans.co.uk FAX: 01827 253390 www.wmh-trans.co.uk Left Hand Right Hand Tr d x p d2 min d2 max d3 min L Part No. Part No. 12 x 3 10.191 10.415 7.8 1000 505-012-010 500-012-010 12 x 3 10.191 10.415 7.8 2000 505-012-020 500-012-020 12 x 3 10.191 10.415 7.8 3000 505-012-030 500-012-030 14 x 3 12.191 12.415 9.8 1000 505-014-010 500-014-010 14 x 3 12.191 12.415 9.8 2000 505-014-020 500-014-020 14 x 3 12.191 12.415 9.8 3000 505-014-030 500-014-030 16 x 4 13.64 13.905 10.8 1000 505-016-010 500-016-010 16 x 4 13.64 13.905 10.8 2000 505-016-020 500-016-020 16 x 4 13.64 13.905 10.8 3000 505-016-030 500-016-030 18 x 4 15.64 15.905 12.8 1000 505-018-010 500-018-010 18 x 4 15.64 15.905 12.8 2000 505-018-020 500-018-020 18 x 4 15.64 15.905 12.8 3000 505-018-030 500-018-030 20 x 4 17,640 17,905 14,8 1000 505-020-010 500-020-010 20 x 4 17,640 17,905 14,8 2000 505-020-020 500-020-020 20 x 4 17,640 17,905 14,8 3000 505-020-030 500-020-030 22 x 5 19,114 19,394 15,5 1000 505-022-010 500-022-010 22 x 5 19,114 19,394 15,5 2000 505-022-020 500-022-020 22 x 5 19,114 19,394 15,5 3000 505-022-030 500-022-030 24 x 5 21,094 21,394 17,5 1000 505-024-010 500-024-010 24 x 5 21,094 21,394 17,5 2000 505-024-020 500-024-020 24 x 5 21,094 21,394 17,5 3000 505-024-030 500-024-030 26 x 5 23,094 23,394 19,5 1000 505-026-010 500-026-010 26 x 5 23,094 23,394 19,5 2000 505-026-020 500-026-020 26 x 5 23,094 23,394 19,5 3000 505-026-030 500-026-030 28 x 5 25,094 25,394 21,5 1000 505-028-010 500-028-010 28 x 5 25,094 25,394 21,5 2000 505-028-020 500-028-020 28 x 5 25,094 25,394 21,5 3000 505-028-030 500-028-030 30 x 6 26,547 26,882 21,9 1000 505-030-010 500-030-010 30 x 6 26,547 26,882 21,9 2000 505-030-020 500-030-020 30 x 6 26,547 26,882 21,9 3000 505-030-030 500-030-030 32 x 6 28,547 28,882 23,9 1000 505-032-010 500-032-010 32 x 6 28,547 28,882 23,9 2000 505-032-020 500-032-020 32 x 6 28,547 28,882 23,9 3000 505-032-030 500-032-030 36 x 6 32,547 32,882 27,9 1000 505-036-010 500-036-010 36 x 6 32,547 32,882 27,9 2000 505-036-020 500-036-020 36 x 6 32,547 32,882 27,9 3000 505-036-030 500-036-030 40 x 7 36,020 36,375 30,5 1000 505-040-010 500-040-010 40 x 7 36,020 36,375 30,5 2000 505-040-020 500-040-020 40 x 7 36,020 36,375 30,5 3000 505-040-030 500-040-030 44 x 7 40,020 40,375 34,5 1000 505-044-010 500-044-010 44 x 7 40,020 40,375 34,5 2000 505-044-020 500-044-020 44 x 7 40,020 40,375 34,5 3000 505-044-020 500-044-030 48 x 8 43,468 43,868 37,8 1000 505-048-010 500-048-010 48 x 8 43,468 43,868 37,8 2000 505-048-020 500-048-020 48 x 8 43,468 43,868 37,8 3000 505-048-030 500-048-030 50 x 8 45,468 45,868 39,3 1000 505-050-010 500-050-010 50 x 8 45,468 45,868 39,3 2000 505-050-020 500-050-020 50 x 8 45,468 45,868 39,3 3000 505-050-030 500-050-030 leadscrew Commercial Range Rolled Finish Material Steel Quality En8 (C35) DIN 103 Lead Tolerance 0.1/300mm Straightness 0.3/300mm 4. 1 72 T: 01827 310311 • F: 01827 307118 E: sales@wmh-trans.co.uk • www.wmh-trans.co.uk Left Hand Right Hand Tr d x p d2 min d2 max d3 min L Part No. Part No. 12 x 3 10.191 10.415 7.8 1000 505-012-010 500-012-010 12 x 3 10.191 10.415 7.8 2000 505-012-020 500-012-020 12 x 3 10.191 10.415 7.8 3000 505-012-030 500-012-030 14 x 3 12.191 12.415 9.8 1000 505-014-010 500-014-010 14 x 3 12.191 12.415 9.8 2000 505-014-020 500-014-020 14 x 3 12.191 12.415 9.8 3000 505-014-030 500-014-030 16 x 4 13.64 13.905 10.8 1000 505-016-010 500-016-010 16 x 4 13.64 13.905 10.8 2000 505-016-020 500-016-020 16 x 4 13.64 13.905 10.8 3000 505-016-030 500-016-030 18 x 4 15.64 15.905 12.8 1000 505-018-010 500-018-010 18 x 4 15.64 15.905 12.8 2000 505-018-020 500-018-020 18 x 4 15.64 15.905 12.8 3000 505-018-030 500-018-030 20 x 4 17,640 17,905 14,8 1000 505-020-010 500-020-010 20 x 4 17,640 17,905 14,8 2000 505-020-020 500-020-020 20 x 4 17,640 17,905 14,8 3000 505-020-030 500-020-030 22 x 5 19,114 19,394 15,5 1000 505-022-010 500-022-010 22 x 5 19,114 19,394 15,5 2000 505-022-020 500-022-020 22 x 5 19,114 19,394 15,5 3000 505-022-030 500-022-030 24 x 5 21,094 21,394 17,5 1000 505-024-010 500-024-010 24 x 5 21,094 21,394 17,5 2000 505-024-020 500-024-020 24 x 5 21,094 21,394 17,5 3000 505-024-030 500-024-030 26 x 5 23,094 23,394 19,5 1000 505-026-010 500-026-010 26 x 5 23,094 23,394 19,5 2000 505-026-020 500-026-020 26 x 5 23,094 23,394 19,5 3000 505-026-030 500-026-030 28 x 5 25,094 25,394 21,5 1000 505-028-010 500-028-010 28 x 5 25,094 25,394 21,5 2000 505-028-020 500-028-020 28 x 5 25,094 25,394 21,5 3000 505-028-030 500-028-030 30 x 6 26,547 26,882 21,9 1000 505-030-010 500-030-010 30 x 6 26,547 26,882 21,9 2000 505-030-020 500-030-020 30 x 6 26,547 26,882 21,9 3000 505-030-030 500-030-030 32 x 6 28,547 28,882 23,9 1000 505-032-010 500-032-010 32 x 6 28,547 28,882 23,9 2000 505-032-020 500-032-020 32 x 6 28,547 28,882 23,9 3000 505-032-030 500-032-030 36 x 6 32,547 32,882 27,9 1000 505-036-010 500-036-010 36 x 6 32,547 32,882 27,9 2000 505-036-020 500-036-020 36 x 6 32,547 32,882 27,9 3000 505-036-030 500-036-030 40 x 7 36,020 36,375 30,5 1000 505-040-010 500-040-010 40 x 7 36,020 36,375 30,5 2000 505-040-020 500-040-020 40 x 7 36,020 36,375 30,5 3000 505-040-030 500-040-030 44 x 7 40,020 40,375 34,5 1000 505-044-010 500-044-010 44 x 7 40,020 40,375 34,5 2000 505-044-020 500-044-020 44 x 7 40,020 40,375 34,5 3000 505-044-020 500-044-030 48 x 8 43,468 43,868 37,8 1000 505-048-010 500-048-010 48 x 8 43,468 43,868 37,8 2000 505-048-020 500-048-020 48 x 8 43,468 43,868 37,8 3000 505-048-030 500-048-030 50 x 8 45,468 45,868 39,3 1000 505-050-010 500-050-010 50 x 8 45,468 45,868 39,3 2000 505-050-020 500-050-020 50 x 8 45,468 45,868 39,3 3000 505-050-030 500-050-030 leadscrew Commercial Range led Finish Material Steel Quality En8 (C35) DIN 103 Lead Tolerance 0.1/300mm Straightness 0.3/300mm . 1 2 T: 01827 310311 • F: 01827 307118 E: sales@wmh-trans.co.uk • www.wmh-trans.co.uk Left Hand Right Hand Tr d x p d2 min d2 max d3 min L Part No. Part No. 12 x 3 10.191 10.415 7.8 1000 505-012-010 500-012-010 12 x 3 10.191 10.415 7.8 2000 505-012-020 500-012-020 12 x 3 10.191 10.415 7.8 3000 505-012-030 500-012-030 14 x 3 12.191 12.415 9.8 1000 505-014-010 500-014-010 14 x 3 12.191 12.415 9.8 2000 505-014-020 500-014-020 14 x 3 12.191 12.415 9.8 3000 505-014-030 500-014-030 16 x 4 13.64 13.905 10.8 1000 505-016-010 500-016-010 16 x 4 13.64 13.905 10.8 2000 505-016-020 500-016-020 16 x 4 13.64 13.905 10.8 3000 505-016-030 500-016-030 18 x 4 15.64 15.905 12.8 1000 505-018-010 500-018-010 18 x 4 15.64 15.905 12.8 2000 505-018-020 500-018-020 18 x 4 15.64 15.905 12.8 3000 505-018-030 500-018-030 20 x 4 17,640 17,905 14,8 1000 505-020-010 500-020-010 20 x 4 17,640 17,905 14,8 2000 505-020-020 500-020-020 20 x 4 17,640 17,905 14,8 3000 505-020-030 500-020-030 22 x 5 19,114 19,394 15,5 1000 505-022-010 500-022-010 22 x 5 19,114 19,394 15,5 2000 505-022-020 500-022-020 22 x 5 19,114 19,394 15,5 3000 505-022-030 500-022-030 24 x 5 21,094 21,394 17,5 1000 505-024-010 500-024-010 24 x 5 21,094 21,394 17,5 2000 505-024-020 500-024-020 24 x 5 21,094 21,394 17,5 3000 505-024-030 500-024-030 26 x 5 23,094 23,394 19,5 1000 505-026-010 500-026-010 26 x 5 23,094 23,394 19,5 2000 505-026-020 500-026-020 26 x 5 23,094 23,394 19,5 3000 505-026-030 500-026-030 28 x 5 25,094 25,394 21,5 1000 505-028-010 500-028-010 28 x 5 25,094 25,394 21,5 2000 505-028-020 500-028-020 28 x 5 25,094 25,394 21,5 3000 505-028-030 500-028-030 30 x 6 26,547 26,882 21,9 1000 505-030-010 500-030-010 30 x 6 26,547 26,882 21,9 2000 505-030-020 500-030-020 30 x 6 26,547 26,882 21,9 3000 505-030-030 500-030-030 32 x 6 28,547 28,882 23,9 1000 505-032-010 500-032-010 32 x 6 28,547 28,882 23,9 2000 505-032-020 500-032-020 32 x 6 28,547 28,882 23,9 3000 505-032-030 500-032-030 36 x 6 32,547 32,882 27,9 1000 505-036-010 500-036-010 36 x 6 32,547 32,882 27,9 2000 505-036-020 500-036-020 36 x 6 32,547 32,882 27,9 3000 505-036-030 500-036-030 40 x 7 36,020 36,375 30,5 1000 505-040-010 500-040-010 40 x 7 36,020 36,375 30,5 2000 505-040-020 500-040-020 40 x 7 36,020 36,375 30,5 3000 505-040-030 500-040-030 44 x 7 40,020 40,375 34,5 1000 505-044-010 500-044-010 44 x 7 40,020 40,375 34,5 2000 505-044-020 500-044-020 44 x 7 40,020 40,375 34,5 3000 505-044-020 500-044-030 48 x 8 43,468 43,868 37,8 1000 505-048-010 500-048-010 48 x 8 43,468 43,868 37,8 2000 505-048-020 500-048-020 48 x 8 43,468 43,868 37,8 3000 505-048-030 500-048-030 50 x 8 45,468 45,868 39,3 1000 505-050-010 500-050-010 50 x 8 45,468 45,868 39,3 2000 505-050-020 500-050-020 50 x 8 45,468 45,868 39,3 3000 505-050-030 500-050-030 leadscrew Commercial Range Rolled Finish Materia Quality DIN Lead To Straight 4. 1 72 T: 01827 310311 • F: 01827 307118 E: sales@wmh-trans.co.uk • www.wmh-trans.co.uk Left Hand Right Hand Tr d x p d2 min d2 max d3 min L Part No. Part No. 12 x 3 10.191 10.415 7.8 1000 505-012-010 500-012-010 12 x 3 10.191 10.415 7.8 2000 505-012-020 500-012-020 12 x 3 10.191 10.415 7.8 3000 505-012-030 500-012-030 14 x 3 12.191 12.415 9.8 1000 505-014-010 500-014-010 14 x 3 12.191 12.415 9.8 2000 505-014-020 500-014-020 14 x 3 12.191 12.415 9.8 3000 505-014-030 500-014-030 16 x 4 13.64 13.905 10.8 1000 505-016-010 500-016-010 16 x 4 13.64 13.905 10.8 2000 505-016-020 500-016-020 16 x 4 13.64 13.905 10.8 3000 505-016-030 500-016-030 18 x 4 15.64 15.905 12.8 1000 505-018-010 500-018-010 18 x 4 15.64 15.905 12.8 2000 505-018-020 500-018-020 18 x 4 15.64 15.905 12.8 3000 505-018-030 500-018-030 20 x 4 17,640 17,905 14,8 1000 505-020-010 500-020-010 20 x 4 17,640 17,905 14,8 2000 505-020-020 500-020-020 20 x 4 17,640 17,905 14,8 3000 505-020-030 500-020-030 22 x 5 19,114 19,394 15,5 1000 505-022-010 500-022-010 22 x 5 19,114 19,394 15,5 2000 505-022-020 500-022-020 22 x 5 19,114 19,394 15,5 3000 505-022-030 500-022-030 24 x 5 21,094 21,394 17,5 1000 505-024-010 500-024-010 24 x 5 21,094 21,394 17,5 2000 505-024-020 500-024-020 24 x 5 21,094 21,394 17,5 3000 505-024-030 500-024-030 26 x 5 23,094 23,394 19,5 1000 505-026-010 500-026-010 26 x 5 23,094 23,394 19,5 2000 505-026-020 500-026-020 26 x 5 23,094 23,394 19,5 3000 505-026-030 500-026-030 28 x 5 25,094 25,394 21,5 1000 505-028-010 500-028-010 28 x 5 25,094 25,394 21,5 2000 505-028-020 500-028-020 28 x 5 25,094 25,394 21,5 3000 505-028-030 500-028-030 30 x 6 26,547 26,882 21,9 1000 505-030-010 500-030-010 30 x 6 26,547 26,882 21,9 2000 505-030-020 500-030-020 30 x 6 26,547 26,882 21,9 3000 505-030-030 500-030-030 32 x 6 28,547 28,882 23,9 1000 505-032-010 500-032-010 32 x 6 28,547 28,882 23,9 2000 505-032-020 500-032-020 32 x 6 28,547 28,882 23,9 3000 505-032-030 500-032-030 36 x 6 32,547 32,882 27,9 1000 505-036-010 500-036-010 36 x 6 32,547 32,882 27,9 2000 505-036-020 500-036-020 36 x 6 32,547 32,882 27,9 3000 505-036-030 500-036-030 40 x 7 36,020 36,375 30,5 1000 505-040-010 500-040-010 40 x 7 36,020 36,375 30,5 2000 505-040-020 500-040-020 40 x 7 36,020 36,375 30,5 3000 505-040-030 500-040-030 44 x 7 40,020 40,375 34,5 1000 505-044-010 500-044-010 44 x 7 40,020 40,375 34,5 2000 505-044-020 500-044-020 44 x 7 40,020 40,375 34,5 3000 505-044-020 500-044-030 48 x 8 43,468 43,868 37,8 1000 505-048-010 500-048-010 48 x 8 43,468 43,868 37,8 2000 505-048-020 500-048-020 48 x 8 43,468 43,868 37,8 3000 505-048-030 500-048-030 50 x 8 45,468 45,868 39,3 1000 505-050-010 500-050-010 50 x 8 45,468 45,868 39,3 2000 505-050-020 500-050-020 50 x 8 45,468 45,868 39,3 3000 505-050-030 500-050-030 leadscrew Commercial Range Rolled Finish Material Steel Quality En8 (C35) DIN 103 Lead Tolerance 0.1/300mm Straightness 0.3/300mm 4. 1 72 T: 01827 310311 • F: 01827 307118 E: sales@wmh-trans.co.uk • www.wmh-trans.co.uk Left Hand Right Hand 3 min L Part No. Part No. 7.8 1000 505-012-010 500-012-010 7.8 2000 505-012-020 500-012-020 7.8 3000 505-012-030 500-012-030 9.8 1000 505-014-010 500-014-010 9.8 2000 505-014-020 500-014-020 9.8 3000 505-014-030 500-014-030 10.8 1000 505-016-010 500-016-010 10.8 2000 505-016-020 500-016-020 10.8 3000 505-016-030 500-016-030 12.8 1000 505-018-010 500-018-010 12.8 2000 505-018-020 500-018-020 12.8 3000 505-018-030 500-018-030 14,8 1000 505-020-010 500-020-010 14,8 2000 505-020-020 500-020-020 14,8 3000 505-020-030 500-020-030 15,5 1000 505-022-010 500-022-010 15,5 2000 505-022-020 500-022-020 15,5 3000 505-022-030 500-022-030 17,5 1000 505-024-010 500-024-010 17,5 2000 505-024-020 500-024-020 17,5 3000 505-024-030 500-024-030 19,5 1000 505-026-010 500-026-010 19,5 2000 505-026-020 500-026-020 19,5 3000 505-026-030 500-026-030 21,5 1000 505-028-010 500-028-010 21,5 2000 505-028-020 500-028-020 21,5 3000 505-028-030 500-028-030 21,9 1000 505-030-010 500-030-010 21,9 2000 505-030-020 500-030-020 21,9 3000 505-030-030 500-030-030 23,9 1000 505-032-010 500-032-010 23,9 2000 505-032-020 500-032-020 23,9 3000 505-032-030 500-032-030 27,9 1000 505-036-010 500-036-010 27,9 2000 505-036-020 500-036-020 27,9 3000 505-036-030 500-036-030 30,5 1000 505-040-010 500-040-010 30,5 2000 505-040-020 500-040-020 30,5 3000 505-040-030 500-040-030 34,5 1000 505-044-010 500-044-010 34,5 2000 505-044-020 500-044-020 34,5 3000 505-044-020 500-044-030 37,8 1000 505-048-010 500-048-010 37,8 2000 505-048-020 500-048-020 37,8 3000 505-048-030 500-048-030 39,3 1000 505-050-010 500-050-010 39,3 2000 505-050-020 500-050-020 39,3 3000 505-050-030 500-050-030 screw al Range Material Steel Quality En8 (C35) DIN 103 Lead Tolerance 0.1/300mm Straightness 0.3/300mm F: 01827 307118 o.uk • www.wmh-trans.co.uk Left Hand Right Hand max d3 min L Part No. Part No. 0.415 7.8 1000 505-012-010 500-012-010 0.415 7.8 2000 505-012-020 500-012-020 0.415 7.8 3000 505-012-030 500-012-030 2.415 9.8 1000 505-014-010 500-014-010 2.415 9.8 2000 505-014-020 500-014-020 2.415 9.8 3000 505-014-030 500-014-030 3.905 10.8 1000 505-016-010 500-016-010 3.905 10.8 2000 505-016-020 500-016-020 3.905 10.8 3000 505-016-030 500-016-030 5.905 12.8 1000 505-018-010 500-018-010 5.905 12.8 2000 505-018-020 500-018-020 5.905 12.8 3000 505-018-030 500-018-030 7,905 14,8 1000 505-020-010 500-020-010 7,905 14,8 2000 505-020-020 500-020-020 7,905 14,8 3000 505-020-030 500-020-030 9,394 15,5 1000 505-022-010 500-022-010 9,394 15,5 2000 505-022-020 500-022-020 9,394 15,5 3000 505-022-030 500-022-030 1,394 17,5 1000 505-024-010 500-024-010 1,394 17,5 2000 505-024-020 500-024-020 1,394 17,5 3000 505-024-030 500-024-030 3,394 19,5 1000 505-026-010 500-026-010 3,394 19,5 2000 505-026-020 500-026-020 3,394 19,5 3000 505-026-030 500-026-030 5,394 21,5 1000 505-028-010 500-028-010 5,394 21,5 2000 505-028-020 500-028-020 5,394 21,5 3000 505-028-030 500-028-030 6,882 21,9 1000 505-030-010 500-030-010 6,882 21,9 2000 505-030-020 500-030-020 6,882 21,9 3000 505-030-030 500-030-030 8,882 23,9 1000 505-032-010 500-032-010 8,882 23,9 2000 505-032-020 500-032-020 8,882 23,9 3000 505-032-030 500-032-030 2,882 27,9 1000 505-036-010 500-036-010 2,882 27,9 2000 505-036-020 500-036-020 2,882 27,9 3000 505-036-030 500-036-030 6,375 30,5 1000 505-040-010 500-040-010 6,375 30,5 2000 505-040-020 500-040-020 6,375 30,5 3000 505-040-030 500-040-030 0,375 34,5 1000 505-044-010 500-044-010 0,375 34,5 2000 505-044-020 500-044-020 0,375 34,5 3000 505-044-020 500-044-030 3,868 37,8 1000 505-048-010 500-048-010 3,868 37,8 2000 505-048-020 500-048-020 3,868 37,8 3000 505-048-030 500-048-030 5,868 39,3 1000 505-050-010 500-050-010 5,868 39,3 2000 505-050-020 500-050-020 5,868 39,3 3000 505-050-030 500-050-030 adscrew mercial Range Material Steel Quality En8 (C35) DIN 103 Lead Tolerance 0.1/300mm Straightness 0.3/300mm 0311 • F: 01827 307118 trans.co.uk • www.wmh-trans.co.uk Right Hand Part No. 00-012-010 00-012-020 00-012-030 00-014-010 00-014-020 00-014-030 00-016-010 00-016-020 00-016-030 00-018-010 00-018-020 00-018-030 00-020-010 00-020-020 00-020-030 00-022-010 00-022-020 00-022-030 00-024-010 00-024-020 00-024-030 00-026-010 00-026-020 00-026-030 00-028-010 00-028-020 00-028-030 00-030-010 00-030-020 00-030-030 00-032-010 00-032-020 00-032-030 00-036-010 00-036-020 00-036-030 00-040-010 00-040-020 00-040-030 00-044-010 00-044-020 00-044-030 00-048-010 00-048-020 00-048-030 00-050-010 00-050-020 00-050-030 Material Steel Quality En8 (C35) DIN 103 Lead Tolerance 0.1/300mm Straightness 0.3/300mm ns.co.uk Screw Thread Accuracy Screw jacks using trapezoidal rolled leadscrews have a lead error of around 0.10mm over 300mm of thread but the use of optional whirled screw threads can reduce this down to around 0.05mm. It is possible to attain even lower pitch error via use of ballscrews as opposed to leadscrews and can yield an accuracy of 0.023mm and lower over 300mm – please contact of sales team for information on what options we offer. Tolerances Axial Play – “a” Axial Play has no influence on positioning accuracy when loading of the jack is in one direction only (i.e. in constant compression or in constant tension) as the load is always thrust upon one flank of the screw thread only. Operating Temperature Screw jacks with standard lubrication have a rated working temperature range of -10 °C to +40 °C but special lubricants are available to increase this range to -30 °C to + 80 °C Radial Play – “b” Radial play occurs only in the case of type 1 (travelling screw) jacks as a result of clearance between the outer diameter of the screw thread and the guide ring within the jack body. This clearance is typically around 0.2mm and results in radial play “b” proportional to the stroke length. The use of whirled as opposed to rolled screw threads will help to reduce this clearance but it can never be fully removed as to allow for proper lubrication and thermal expansion. Although screw jacks have been designed to account for a small amount of radial play, they are not designed to withstand any loads that do not act parallel to the axis of the screw – this applies to both type 1 (travelling screw) and type 2 (travelling nut) screw jacks. WMH recommends the use of external guidance in all applications to remove any possible side loads from the screw jack which would otherwise lead to premature wear and failure – please contact our sales team for information on the range of linear guidance systems available from our stock. Tooth Play – “backlash” Tooth profile play or “backlash” is a result of clearance between drive and driven teeth of the worm and wheel within the jack body. This clearance is necessary to allow for thermal expansion and correct lubrication of the mating parts to prevent binding and premature wear or failure. When new, this backlash is around 0.10 – 0.30mm and varies on the size of the components but will increase over the service life of the jack. Screw Thread Accuracy Screw jacks using trapezoidal rolled leadscrews have a lead error of around 0.10mm over 300mm of thread but the use of optional whirled screw threads can reduce this down to around 0.05mm. It is possible to attain even lower pitch error via use of ballscrews as opposed to leadscrews and can yield an accuracy of 0.023mm and lower over 300mm – please contact of sales team for information on what options we offer. Tolerances Axial Play – “a” Axial Play has no influence on positioning accuracy when loading of the jack is in one direction only (i.e. in constant compression or in constant tension) as the load is always thrust upon one flank of the screw thread only. Operating Temperature Screw jacks with standard lubrication have a rated working temperature range of -10 °C to +40 °C but special lubricants are available to increase this range to -30 °C to + 80 °C Radial Play – “b” Radial play occurs only in the case of type 1 (travelling screw) jacks as a result of clearance between the outer diameter of the screw thread and the guide ring within the jack body. This clearance is typically around 0.2mm and results in radial play “b” proportional to the stroke length. The use of whirled as opposed to rolled screw threads will help to reduce this clearance but it can never be fully removed as to allow for proper lubrication and thermal expansion. Although screw jacks have been designed to account for a small amount of radial play, they are not designed to withstand any loads that do not act parallel to the axis of the screw – this applies to both type 1 (travelling screw) and type 2 (travelling nut) screw jacks. WMH recommends the use of external guidance in all applications to remove any possible side loads from the screw jack which would otherwise lead to premature wear and failure – please contact our sales team for information on the range of linear guidance systems available from our stock. Tooth Play – “backlash” Tooth profile play or “backlash” is a result of clearance between drive and driven teeth of the worm and wheel within the jack body. This clearance is necessary to allow for thermal expansion and correct lubrication of the mating parts to prevent binding and premature wear or failure. When new, this backlash is around 0.10 – 0.30mm and varies on the size of the components but will increase over the service life of the jack. Operating Temperature Screw jacks with standard lubrication have a rated working temperature range of -10 °C to +40 °C but special lubricants are available to increase this range to -30 °C to + 80 °C Axial Play – “a” Axial Play has no influence on positioning accuracy when loading of the jack is in one direction only (i.e. in constant compression or in constant tension) as the load is always thrust upon one flank of the screw thread only. Tooth Play – “backlash” Tooth profile play or “backlash” is a result of clearance between drive and driven teeth of the worm and wheel within the jack body. This clearance is necessary to allow for thermal expansion and correct lubrication of the mating parts to prevent binding and premature wear or failure. When new, this backlash is around 0.10 – 0.30mm and varies on the size of the components but will increase over the service life of the jack. Radial Play – “b” Radial play occurs only in the case of type 1 (travelling screw) jacks as a result of clearance between the outer diameter of the screw thread and the guide ring within the jack body. This clearance is typically around 0.2mm and results in radial play “b” proportional to the stroke length. The use of whirled as opposed to rolled screw threads will help to reduce this clearance but it can never be fully removed as to allow for proper lubrication and thermal expansion. Although screw jacks have been designed to account for a small amount of radial play, they are not designed to withstand any loads that do not act parallel to the axis of the screw – this applies to both type 1 (travelling screw) and type 2 (travelling nut) screw jacks. WMH recommends the use of external guidance in all applications to remove any possible side loads from the screw jack which would otherwise lead to premature wear and failure – please contact our sales team for information on the range of linear guidance systems available from our stock. Screw Thread Accuracy Screw jacks using trapezoidal rolled leadscrews have a lead error of around 0.10mm over 300mm of thread but the use of optional whirled screw threads can reduce this down to around 0.05mm. It is possible to attain even lower pitch error via use of ballscrews as opposed to leadscrews and can yield an accuracy of 0.023mm and lower over 300mm – please contact of sales team for information on what options we offer. Screw Jacks Precision Range Travelling Screw Type 9. 1 Ratio Tr A A1 A2 A3 a1 a2 a3 B B1 C1 C2 C3 C4 C5 D1 (j6) D2 D3 D4 d1 d3 Part No. 4:1 14 x 4 20 60 50 22 48 38 6 92 20 50 12 12 25 27 9 M8 26.0 28 M6 x 12 25 562-004-010 16:1 14 x 4 20 60 50 22 48 38 6 92 20 50 12 12 25 27 9 M8 26.0 28 M6 x 12 25 562-016-010 4:1 18 x 4 25 80 72 31 60 52 10 120 22,5 62 19 12 32 35 10 M12 29,6 33,5 M8 x 13 25 562-104-012 16:1 18 x 4 25 80 72 31 60 52 10 120 22,5 62 19 12 32 35 10 M12 29,6 33,5 M8 x 13 25 562-116-012 4:1 20 x 4 32 100 85 40 78 63 11 140 25,5 75 20 18 37 45 14 M14 38,7 44 M8 x 15 35 562-204-015 16:1 20 x 4 32 100 85 40 78 63 11 140 25,5 75 20 18 37 45 14 M14 38,7 44 M8 x 15 35 562-216-015 6:1 30 x 6 45 130 105 54 106 81 12 195 43 82 22 23 41 50 16 M20 46.0 50 M10 x 15 35 562-306-020 24:1 30 x 6 45 130 105 54 106 81 12 195 43 82 22 23 41 50 16 M20 46.0 50 M10 x 15 35 562-324-020 7:1 40 x 7 63 180 145 78 150 115 15 240 45 117 29 32 59 65 20 M30 60.0 65 M12 x 16 50 562-407-025 28:1 40 x 7 63 180 145 78 150 115 15 240 45 117 29 32 59 65 20 M30 60.0 65 M12 x 16 50 562-428-025 9:1 60 x 9 71 200 165 83 166 131 17 300 65 160 48 40 79 95 25 M36 85.0 90 M20 x 30 60 562-509-040 36:1 60 x 9 71 200 165 83 166 131 17 300 65 160 48 40 79 95 25 M36 85.0 90 M20 x 30 60 562-536-040 9:1 60 x 9 71 210 195 90 170 155 20 325 63 175 48 40 87 95 25 M48 x 2 90.0 95 M24 x 40 60 562-609-050 36:1 60 x 9 71 210 195 90 170 155 20 325 63 175 48 40 87 95 25 M48 x 2 90.0 95 M24 x 40 60 562-636-050 10:1 70 x 10 80 240 220 100 190 170 25 355 65 165 58 40 82 110 30 M56 x 2 105.0 110 M30 x 45 60 562-710-060 40:1 70 x 10 80 240 220 100 190 170 25 355 65 165 58 40 82 110 30 M56 x 2 105.0 110 M30 x 45 60 562-740-060 10:1 80 x 10 80 240 220 100 190 170 25 355 65 165 58 40 82 110 30 M64 x 3 120.0 125 M30 x 45 60 562-810-075 40:1 80 x 10 80 240 220 100 190 170 25 355 65 165 58 40 82 110 30 M64 x 3 120.0 125 M30 x 45 60 562-840-075 10:1 100 x 10 100 290 250 125 230 190 30 380 63 220 78 50 106 140 35 M72 x 3 145.0 150 M36 x 54 70 562-910-100 40:1 100 x 10 100 290 250 125 230 190 30 380 63 220 78 50 106 140 35 M72 x 3 145.0 150 M36 x 54 70 562-940-100 120 T: 01827 310311 • F: 01827 307118 E: sales@wmh-trans.co.uk • www.wmh-trans.co.uk Screw Jacks – Cubic Type