3×D Type  Toolholder Dimensions No. of Inserts Dimension (mm) Spare Parts Max. Clamp Screw Wrench Plug Applicable Inserts Description Std. Offset φDc L1 L2 L3 φd φd1 Rc (Radial) K53 (mm) S40 -DRZ3399-12 ● 33 203 134 99 +2.9 -DRZ34102-12 ● 34 207 138 102 +2.7 -DRZ35105-12 ● 35 209 140 105 +2.4 -DRZ36108-12 ● 2 36 213 144 108 40 55 Rc1/4 +2.2 SB-5085TR DT-20 GP-2 ZCMT12T306 -DRZ37111-12 ● 37 215 146 111 +1.9 ZCMT12T304SP -DRZ38114-12 ● 38 218 149 114 +1.7 -DRZ39117-12 ● 39 221 152 117 +1.4 -DRZ40120-12 ● 40 222 153 120 +1.2 -DRZ41123-15 ● 41 224 155 123 +4.0 -DRZ42126-15 ● 42 227 158 126 +3.7 -DRZ43129-15 ● 43 230 161 129 55 +3.5 -DRZ44132-15 ● 44 233 164 132 +3.2 -DRZ45135-15 ● 45 234 165 135 +3.0 -DRZ46138-15 ● 46 241 172 138 +2.7 ZCMT150408 -DRZ47141-15 ●2 47 245 176 141 40 Rc1/4 +2.5 SB-5085TR DT-20 GP-2 ZCMT150406SP -DRZ48144-15 ● 48 248 179 144 +2.2 -DRZ49147-15 ● 49 250 181 147 60 +2.0 -DRZ50150-15 ● 50 251 182 150 +1.7 -DRZ51153-15 ● 51 254 185 153 +1.2 -DRZ52156-15 ● 52 257 188 156 +1.0 -DRZ53159-15 ● 53 260 191 159 +0.7 -DRZ54162-20 ● 54 266 197 162 +5.0 -DRZ55165-20 ● 55 269 200 165 +4.7 K -DRZ56168-20 ●2 56 272 203 168 40 65 Rc1/4 +4.4 SB-60120TR DT-25 GP-2 ZCMT200608 -DRZ57171-20 ● 57 275 206 171 +4.1 -DRZ58174-20 ● 58 278 209 174 +3.8 -DRZ59177-20 ● 59 281 212 177 +3.5 · When offset drilling, reduce feed rate to 0.08mm/rev or less. Recommended Cutting Conditions K65 Drilling · Hole Dia. Tolerance (3D type) Dc Hole Dia. Tolerance (mm) φ13~φ26.5 + 0.20 - 0.10 φ27~φ40 + 0.25 - 0.15 φ41~φ59 + 0.30 - 0.20 * Above is numeric guideline. It may vary depending on machines / workpieces / clamping status / cutting conditions.  : Std. Item K59