Surface Set Bits

Surface Set Bits

Nowhere is Pilot's experience and craftsmanship better illustrated than the surface set bit range. Mined diamonds have been selected from the same ethical and reliable sources for many years, resulting in consistent characteristics and dependable products. Designs and setting patterns have evolved through constant dialogue and feedback from the best drillers in the world.

Surface set bits are still the best choice for softer or more abrasive formations, where the highly resistant matrix can retain the diamonds without the compromises required in an impregnated product, where the matrix is expected to erode.

Available In All Standard Sizes

Size Chart

Outside Diameter Core Bits Outside Diameter Core Bits Gauge Inside Diameter Core Bits Inside Diameter Core Bits Gauge
Size inch mm inch max/min mm max/min inch mm inch max/min mm max/min
IEW/ IEW-S 1.470 37.34 1.475
1.465
37.47
37.21
0.995 25.27 1.000
0.990
25.40
25.15
TT46/LTK46 1.815 46.10 1.820
1.810
46.23
45.97
1.385 35.18 1.390
1.380
35.31
35.05
JKT48/LTK48 1.882 47.80 1.887
1.877
47.93
47.68
1.385 35.18 1.390
1.380
35.31
35.05
A-TK 1.875 47.63 1.880
1.870
47.75
47.50
1.202 30.53 1.207
1.197
30.66
30.40
B-TK 2.345 59.56 2.350
2.340
59.69
59.44
1.601 40.67 1.606
1.596
40.79
40.54
AW-34 1.882 47.80 1.887
1.877
47.93
47.68
1.315 33.40 1.320
1.310
33.53
33.27
BTW 2.345 59.56 2.350
2.340
59.69
59.44
1.670 42.42 1.675
1.665
42.55
42.29
NTW 2.970 75.44 2.975
2.965
75.57
75.31
2.215 56.26 2.220
2.210
56.39
56.13
A-W/L 1.875 47.63 1.880
1.870
47.75
47.50
1.062 26.97 1.067
1.057
27.10
26.85
B-W/L 2.345 59.56 2.350
2.340
59.69
59.44
1.433 36.40 1.438
1.428
36.53
36.27
N3-W/L 2.965 75.31 2.970
2.960
75.44
75.18
1.775 45.09 1.780
1.770
45.21
44.96
N-W/L 2.965 75.31 2.970
2.960
75.44
75.18
1.875 47.63 1.880
1.870
47.75
47.50
N2-W/L 2.965 75.31 2.970
2.960
75.44
75.18
1.995 50.67 2.000
1.990
50.80
50.55
H3-W/L 3.763 95.58 3.770
2.756
95.76
95.40
2.406 61.11 2.411
2.401
61.24
60.99
H-W/L 3.763 95.58 3.770
2.756
95.76
95.40
2.500 63.50 2.505
2.495
63.63
63.37
P3-W/L 4.805 122.05 4.815
4.795
122.30
121.79
3.270 83.06 3.275
3.265
83.19
82.93
P-W/L 4.805 122.05 4.815
4.795
122.30
121.79
3.345 84.96 3.350
3.340
85.09
84.84