Surface set diamond bits
Selection chart. Diamond.
MADE WITH NATURAL DIAMOND AND DESIGNED FOR MAXIMUM PERFORMANCE
| DIAMOND SIZE |
| PPC |
DIAMOND SIZE in mm. |
| 20 |
1.80 |
| 30 |
1.60 |
| 40 |
1.48 |
| 50 |
1.38 |
- SPC represents the number of stones contained in one carat and describes the
stone size of the diamond according to the table.
1 carat (ct) = 0.2 grs.
- When formation to be drilled is softer , use recommended of bigger diamond size.
- Surface set bits with sizes below 50 spc are not recommended, in this case better
to drill with impregnated bits.
|
SELECTION CHART
SURFACE SET BIT NATURAL DIAMOND SETTING |
ROCK TYPE |
DIAMOND SIZE
SPC stone per carat |
BIT PROFILE |
MEDIUM HARD
Basalt, Dolomite,
Schist. |
40 to 50 SPC |
STEPPED |
SOFT
Sandstone, Slate, Limestone. |
30 to 40 SPC |
SEMIROUND |
VERY SOFT
Clay, Gypsum, Talc, Potash. |
15 to 25 SPC |
SEMIROUND |