SM-4 (СМ-4) hard-alloy, self-sharpening crown boring bits
Hard-alloy, self-sharpening crown boring bit SM-4 (СМ-4) is manufactured under ГОСТ (GOST) 11108-70. The crown boring bit is armoured with a hard alloy.
It is designated for core boring, mainly of slightly abrasive, monolith and interbedded rocks of categories 5-6 by drillability: silty rocks, clay and malm shales, limestones, rudaceous silty rocks, basalts, dunites.
Material applied: body - steel 35 GOST (ГОСТ) 1050-71, hard-alloy cutters VK6 (ВК6) Г5107 GOST (ГОСТ) 3882-67, solder - brass L63 (Л63).
|
Type and size |
Type of thread |
Rocks being bored |
Nature of rocks |
Weight, kg |
|---|---|---|---|---|
|
D59 / Д59 |
core |
drillability categories V-VI |
sand shales, malmstones, clay silty rocks |
0,420 |
|
D76 / Д76 |
core |
drillability categories V-VI |
sand shales, malmstones, clay silty rocks |
0,560 |
|
D93 / Д93 |
core |
drillability categories V-VI |
sand shales, malmstones, clay silty rocks |
0,640 |
|
D112 / Д112 |
core |
drillability categories V-VI |
sand shales, malmstones, clay silty rocks |
0,750 |
|
D132 / Д132 |
core |
drillability categories V-VI |
sand shales, malmstones, clay silty rocks |
0,970 |
|
D151 / Д151 |
core |
drillability categories V-VI |
sand shales, malmstones, clay silty rocks |
1,200 |
|
D171 / Д171 |
core |
drillability categories V-VI |
sand shales, malmstones, clay silty rocks |
|
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| Availability: | In stock |
| Заказать товар: | Y |
