Threading Technology – Clamping Technology 520

628 Soft- synchro Speed- synchro KSN MQL SFM HF EM Accessories Tech. Info Product Finder Setting Values of Overload Clutch Torque Thread type Nm ft lbs UNC UNF M G (Whw.) BSP NPT NPTF Rc (BSPT) 0.3 0.2 No. 2 No. 2 M2 0.4 0.3 No. 3 M2.5 0.5 0.4 No. 3 No. 4 0.6 0.5 M3 0.8 0.6 No. 4 No. 5 1 0.7 No. 5 No. 6 M3.5 1.2 0.9 No. 6 No. 8 1.6 1.2 No. 8 M4 2 1.5 No. 10 2.5 1.8 No. 12 M5 3 2.2 No. 10 1 / 4 4 3 No. 12 5 3.7 5 / 16 M6 6 4.4 1 / 4 3 / 8 G 1 / 8 8 6 10 7.4 5 / 16 7 / 16 M8 12 8.9 1 / 2 16 12 3 / 8 1 / 16 Rc 1 / 16 18 13 9 / 16 M10 G 1 / 4 20 15 5 / 8 22 16 7 / 16 G 3 / 8 25 18 M12 1 / 8 Rc 1 / 8 28 21 32 24 1 / 2 3 / 4 40 30 9 / 16 45 33 7 / 8 M14 50 37 5 / 8 M16 G 1 / 2 56 41 G 5 / 8 Rc 1 / 4 63 46 1 / 4 70 52 3 / 4 1 G 3 / 4 80 59 1 1 / 8 M18 G 7 / 8 90 66 1 1 / 4 M20 3 / 8 Rc 3 / 8 100 74 7 / 8 1 3 / 8 M22 110 81 1 1 / 2 125 92 140 103 1 M24 G 1 160 118 M27 G 1 1 / 8 1 / 2 Rc 1 / 2 180 133 G 1 1 / 4 200 148 G 1 3 / 8 3 / 4 Rc 3 / 4 Torque Thread type Nm ft lbs UNC UNF M G (Whw.) BSP NPT NPTF Rc (BSPT) 220 162 1 1 / 8 M30 G 1 1 / 2 240 177 1 1 / 4 M33 G 1 3 / 4 260 192 G 2 280 207 M36 300 221 G 2 1 / 4 320 236 M39 340 250 1 3 / 8 G 2 1 / 2 1 Rc 1 360 266 1 1 / 2 G 2 3 / 4 400 295 M42 G 3 420 310 M45 G 3 1 / 4 450 332 G 3 1 / 2 1 1 / 4 Rc 1 1 / 4 480 354 G 3 3 / 4 500 369 G 4 560 413 M48 1 1 / 2 Rc 1 1 / 2 630 465 1 3 / 4 M52 710 524 M56 2 Rc 2 800 590 M60 900 664 M64 1000 738 2 M68 1100 811 2 1 / 4 1170 863 M72 1230 907 M76 1300 959 M80 1380 1018 M85 1400 1033 2 1 / 2 2 1 / 2 Rc 2 1 / 2 1460 1077 M90 1540 1136 M95 1620 1195 M100 1700 1254 M105 1780 1313 M110 1860 1372 M115 1940 1431 M120 2000 1475 2 3 / 4 3 Rc 3 2020 1490 M125 2110 1556 M130 2200 1623 2270 1674 M140 2430 1792 M150 2680 1977 M160 Setting and checking of the overload clutch on quick-change adapters of types EM-U, EM-UL and HF: Generally speaking, the torque to be set depends on • Size • Geometry and coating of the tool • Workpiece material • Type and quality of the coolant-lubricant • Drilled hole diameter The table contains standard values for thread cutting in steel with a tensile strength of 600-800 N/mm 2 . These values generally need to be adjusted to the individual work case (e.g. for cold-forming of threads).