This series impregnated core bits are designed for sustainability and cost efficiency.
Product Description
This series impregnated core bits are designed for sustainability and cost efficiency. The bits are adjusted to fit slower rotation and heavy duty site-investigation rigs. They are less sensitive to abuse, rough handling and abrasive formations. A range of standardized matrices and one diamond impregnation height cover the most common applications. For site investigation and core drilling in shallow formations of less than 150 m (500 ft), this series impregnated core bits will be your optimal choice.
| FEATURES&BENEFITS |
| * Less sensitive to abuse for high sustainability and cost efficiency |
| * Matrices for a wide range of formations, easy bit selection |
| * Standardized design makes the bit range competitive and cost effective |
| STANDARD SPECIFICATION | |||||||
| ITEM | DIAMOND BIT | REAMING SHELL | |||||
| Swedish Metric T2 Series | Size | Bit-set OD | Bit-set ID | ||||
| mm | inch | mm | inch | mm | inch | ||
| 36 | 36.0 | 1.417 | 22.0 | 0.866 | 36.3 | 1.429 | |
| 46 | 46.0 | 1.811 | 32.0 | 1.260 | 46.3 | 1.823 | |
| 56 | 56.0 | 2.205 | 42.0 | 1.654 | 56.3 | 2.217 | |
| 66 | 66.0 | 2.598 | 52.0 | 2.047 | 66.3 | 2.610 | |
| 76 | 76.0 | 2.992 | 62.0 | 2.441 | 76.3 | 3.004 | |
| 86 | 86.0 | 3.386 | 72.0 | 2.835 | 86.3 | 3.398 | |
| 101 | 101.0 | 3.976 | 84.0 | 3.307 | 101.3 | 3.988 | |
| Swedish T Series | TAW | 47.6 | 1.875 | 23.2 | 1.31 | 48.0 | 1.89 |
| TBW | 59.5 | 2.345 | 44.9 | 1.77 | 59.9 | 2.36 | |
| TNW | 75.3 | 2.965 | 60.5 | 2.38 | 75.7 | 2.98 | |
| APPLICATION | |
| Application 1 | Soft to medium hard rock with abrasive and fractured to competent formations Matrix series 1-4 |
| Application 2 | Medium hard to hard rock with slightly abrasive and slightly broken to competent formations Matrix series 5-8 |
| Application 3 | Hard to very hard rock with competent formations Matrix series 9-10 |
| MATRIX SERIES | ||
| Rock Group | Formation Description | Rock Type |
| 1-4 | Soft to medium hard Very abrasive to slightly abrasive Very fractured to slightly broken | Unmetamorphosed or weakly metamorphosed shales, Sandstone and limestone |
| 5 | Medium hard Abrasive Moderately fractured to slightly broken | Limestone and dolomite. Weathered granite and gneiss. Serpentinite and metaperidotite. |
| 6 | Medium hard Moderately abrasive Moderately fractured to slightly broken | Unmetamorphosed or weakly metamorphosed diorite, Gabbro, peridotite and gneiss. Basalt, andesite. |
| 7 | Medium hard - hard Moderately abrasive Slightly fractured to competent | Metabasalt, amphibolite. Metamorphosed diorite and gabbro. Diabase. |
| 8 | Hard Slightly abrasive Competent | Quartz rich skarn. Granite and pegmatite |
| 9 | Very hard Slightly abrasive Very competent | Metamorphosed granitic rock and quartz rich gneiss. |
| 10 | Extremely hard Non-abrasive, fine grained Very competent | Chert and jasperite. Quartzite. Highly metamorphosed volcanic. |
| CROWN PROFILES | |
 | Extended channel flushing *Standard profile-general purpose design *Suitable for mixed formations containing broken and competent zones *Suitable for a broad range of formations |
 | Jet *High performance “free cutting”bit *High productivity *Suitable for hard/competent formations |
 | Face discharge *Designed to minimize flushing of core sample *Suitable for broken/granular formations |
 | Wheel gear *Speed performance *High productivity *Suitable for hard/competent formations |
 | Ball *Suitable for mixed formations containing broken and competent zones *Suitable for a broad range of formations |
| CROWN HEIGHT | |
| Short depth holes | 7mm |
| Short to medium depth holes | 10mm |
| Deep holes | 14mm |
