Technical Information Gripping Strength Comparison Chart Gripping Strength Comparison Chart • Metric ER collet chuck TG collet chuck standard Slim Line based on ER40 based on TG100 hydraulic hydraulic mm Nm mm Nm mm Nm mm Nm 3 — 3 — 3 — 3 — 4 — 4 — 4 — 4 — 5 — 5 — 5 — 5 — 6 38 6 — 6 12 6 26 8 52 8 115 8 30 8 50 10 70 10 144 10 40 10 80 12 103 12 300 12 70 12 115 14 108 14 312 14 100 14 160 16 118 16 325 16 135 16 200 18 156 18 339 18 180 18 250 20 206 20 384 20 220 20 230 25 255 25 536 25 500 25 — 32 — 32 569 32 700 32 — 40 — 40 — 40 — 40 — 50 — 50 — 50 — 50 — Gripping Strength Comparison Chart • Inch ER collet chuck TG collet chuck standard Slim Line based on ER40 based on TG100 hydraulic hydraulic in ft. lbs. in ft. lbs. in ft. lbs. in ft. lbs. 1/8 — 1/8 — 1/8 — 1/8 — 3/16 — 3/16 — 3/16 — 3/16 — 1/4 28 1/4 — 1/4 9 1/4 19.2 5/16 38 5/16 85 5/16 22 5/16 — 3/8 52 3/8 106 3/8 30 3/8 59 7/16 — 7/16 — 7/16 — 7/16 — 1/2 76 1/2 221 1/2 55 1/2 89 9/16 80 9/16 230 9/16 74 9/16 — 5/8 87 5/8 240 5/8 100 5/8 148 11/16 115 11/16 250 11/16 129 11/16 — 3/4 152 3/4 283 3/4 148 3/4 155 7/8 — 7/8 — 7/8 — 7/8 — 1 188 1 395 1 369 1 — 1 1/4 — 1 1/4 420 1 1/4 516 1 1/4 — 1 1/2 — 1 1/2 — 1 1/2 — 1 1/2 — 2 — 2 — 2 — 2 — NOTE: Torque values in in. lbs. Minimum values calculated for maximum bore size and minimum shank size. Maximum values calculated for minimum bore size and maximum shank size. K80 WWW.WIDIA.COM Technical Information