Special 4-face grinding with cobalt collar A coating (TiAlN) on the head protects the cutting edge area to a large extent and prevents wear effectively. Optimised flute type greatly improves the chip removal performance of deep hole drilling, helix angle, unique tool body guidance improves the machining accuracy of the hole.
Solid carbide spiral drill for deep hole machining, ideal for carbide drill bit set applications, featuring special four-sided grinding and TiAlN coating for enhanced precision and durability.
Engineering Data
special four-sided grinding
special point grinding
special chip flute geometry
4 guide chamfer
unique cutter guide to improve the processing precision of hole

| dl | L3 | L2 | L1 | d2 | dl | L3 | L2 | L1 | d2 | |
| (h7) | mm | mm | mm | (h6) | (h7) | mm | mm | mm | (h6) | |
| mm | mm | mm | mm | |||||||
| 3 | 45 | 51 | 95 | 6 | 7 | 105 | 119 | 160 | 8 | |
| 4 | 60 | 68 | 110 | 6 | 8 | 120 | 136 | 175 | 8 | |
| 4.5 | 57.5 | 76.5 | 120 | 6 | 8.5 | 127.5 | 144.5 | 190 | 10 | |
| 5 | 75 | 85 | 125 | 6 | 10 | 150 | 170 | 215 | 10 | |
| 5.5 | 82.5 | 93.5 | 135 | 6 | 12 | 180 | 204 | 255 | 12 | |
| 6 | 90 | 102 | 140 | 6 | 14 | 210 | 238 | 285 | 14 | |
| 6.5 | 97.5 | 10.5 | 150 | 8 |
Engineering Data
special four-sided grinding
special point grinding
special chip flute geometry
4 guide chamfer
unique cutter guide to improve the processing precision of hole

| d1 | L3 | L2 | L1 | d2 | d1 | L3 | L2 | L1 | d2 | |
| (h7) | mm | mm | mm | (h6) | (h7) | mm | mm | mm | (h6) | |
| mm | mm | mIm | Ⅲ | |||||||
| 3 | 60 | 66 | 110 | 6 | 6.5 | 130 | 143 | 185 | 8 | |
| 4 | 80 | 88 | 130 | 6 | 7 | 140 | 154 | 195 | 8 | |
| 4.5 | 90 | 99 | 140 | 6 | 8 | 160 | 176 | 215 | 8 | |
| 5 | 100 | 10 | 150 | 6 | 8.5 | 170 | 187 | 230 | 10 | |
| 5.5 | 110 | 121 | 160 | 6 | 10 | 200 | 220 | 265 | 10 | |
| 6 | 120 | 132 | 170 | 6 | 12 | 240 | 264 | 315 | 12 |
Engineering Data
special four-sided grinding
special point grinding
special chip flute geometry
4 guide chamfer
unique cutter guide to improve the processing precision of hole

| d1 | d2 | dl | d2 | |||||||
| (h7) | L3 | L2 | L1 | (h6) | (h7) | L3 | L2 | L1 | (h6) | |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | |
| 3 | 75 | 81 | 125 | 6 | 5.5 | 37.5 | 48.5 | 90 | 6 | |
| 4 | 100 | 108 | 150 | 6 | 6 | 150 | 162 | 200 | 6 | |
| 4.5 | 112.5 | 121.5 | 165 | 6 | 6.5 | 62.5 | 75.5 | 215 | 8 | |
| 5 | 125 | 135 | 175 | 6 | 8 | 200 | 216 | 255 | 8 | |
| 10 | 250 | 270 | 315 | 10 |
special four-sided grinding
special point grinding
special chip flute geometry
4 guide chamfer
unique cutter guide to improve the processing precision of hole

| dl | d2 | d1 | d2 | |||||||
| (h7) | L3 | L2 | L1 | (h6) | (h7) | L3 | L2 | L1 | (h6) | |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | |
| 3 | 90 | 96 | 140 | 6 | 5.5 | 165 | 176 | 215 | 6 | |
| 4 | 120 | 128 | 170 | 6 | 6 | 180 | 192 | 230 | 6 | |
| 4.5 | 135 | 144 | 185 | 6 | 6.5 | 195 | 208 | 250 | 8 | |
| 5 | 150 | 160 | 200 | 6 | 7 | 210 | 224 | 265 | 8 |
Engineering Data
special four-sided grinding
special point grinding
special chip flute geometry
4 guide chamfer
unique cutter guide to improve the processing precision of hole

| d1 | d2 | dl | d2 | |||||||
| (h7) | L3 | L2 | L1 | (h6) | (h7) | L3 | L2 | L1 | (h6) | |
| mm | mm | mm | mm | mm | mim | mm | mm | mm | mm | |
| 4 | 160 | 68 | 210 | 6 | 5 | 200 | 210 | 250 | 6 |
Engineering Data
special four-sided grinding
special point grinding
special polish chip flute geometry
4 guide chamfer
30° RH helix
unique cutter guide to improve the processing precision of hole

| d1 | d2 | d1 | d2 | |||||||
| (h7) | L3 | L2 | L1 | (h6) | (h7) | L3 | L2 | L1 | (h6) | |
| mm | mm | mm | mm | mm | mm | mm | mm | nm | mm | |
| 3 | 45 | 51 | 95 | 6 | 7 | 105 | 119 | 160 | 8 | |
| 4 | 60 | 68 | 10 | 6 | 8 | 120 | 136 | 175 | 8 | |
| 4.5 | 67 | 76.5 | 20 | 6 | 8.5 | 127.5 | 144.5 | 190 | 10 | |
| 5 | 75 | 85 | 125 | 6 | ||||||
| 5.5 | 82.5 | 93.5 | 135 | 6 | 10 | 150 | 170 | 215 | 10 | |
| 6 | 90 | 102 | 140 | 6 | 12 | 180 | 204 | 255 | 12 | |
| 6.5 | 97.5 | 110.5 | 150 | 8 | 14 | 210 | 238 | 285 | 14 |
Engineering Data
special four-sided grinding
special point grinding
special polish chip flute geometry
4 guide chamfer
30° RH helix
unique cutter guide to improve the processing precision of hole

| dl | d2 | dl | cd2 | |||||||
| (h7) | L3 | L2 | L1 | (h6) | (h7) | L3 | L2 | L1 | (h6) | |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | |
| 3 | 60 | 66 | 110 | 6 | 6.5 | 130 | 143 | 185 | 8 | |
| 4 | 80 | 88 | 130 | 6 | 7 | 140 | 154 | 195 | 8 | |
| 4.5 | 90 | 99 | 140 | 6 | 8 | 160 | 176 | 215 | 8 | |
| 5 | 100 | 10 | 150 | 6 | 8.5 | 170 | 187 | 230 | 10 | |
| 5.5 | 110 | 121 | 160 | 6 | 10 | 200 | 220 | 265 | 10 | |
| 6 | 120 | 32 | 170 | 6 | 12 | 240 | 264 | 315 | 12 |
Engineering Data
special four-sided grinding
special point grinding
special polish chip flute geometry
30° RH helix
unique cutter guide to improve the processing precision of hole

| d1 | L3 | d2 | d1 | L3 | d2 | |||||
| (h7) mm | mm | L2 | L1 | (h6) | (h7) | mm | L2 | L1 | (h6) | |
| mm | mm | mm | mm | mm | mm | mm | ||||
| 3 | 75 | 81 | 125 | 6 | 6 | 150 | 162 | 200 | 6 | |
| 4 | 100 | 108 | 150 | 6 | 6.5 | 162 | 175.5 | 215 | 8 | |
| 4.5 | 112.5 | 21.5 | 165 | 6 | 8 | 200 | 216 | 255 | 8 | |
| 5 | 125 | 135 | 175 | 6 | 10 | 250 | 270 | 315 | 10 | |
| 5.5 | 137.5 | 148.5 | 190 | 6 |
Engineering Data
special four-sided grinding
special point grinding
special polish chip flute geometry
30° RH helix
unique cutter guide to improve the processing precision of hole

| dl | d2 | d1 | d2 | |||||||
| (h7) | L3 | 12 | L1 | (h6) | (h7) | L3 | L2 | L1 | (h6) | |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | ||
| 3 | 90 | 96 | 40 | 6 | 5.5 | 165 | 176 | 215 | 6 | |
| 4 | 120 | 128 | 170 | 6 | 6 | 180 | 192 | 230 | 6 | |
| 4.5 | 135 | 144 | 185 | 6 | 6.5 | 195 | 208 | 250 | 8 | |
| 5 | 150 | 160 | 200 | 6 | 7 | 210 | 224 | 265 | 8 |
Engineering Data
special four-sided grinding
special point grinding
special polish chip flute geometry
30° RH helix
unique cutter guide to improve the processing precision of hole

| d1 | d2 | d1 | d2 | |||||||
| (h7) | L3 | L2 | L1 | (h6) | (h7) | L3 | L2 | L1 | (h6) | |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | |
| 4 | 160 | 168 | 210 | 6 | 5 | 210 | 210 | 250 | 6 |