H-Gauge Core Bits

Specifications
Bit Size Outside Set Diameter Inside Set Diameter
inch                       mm inch                       mm
HWL 3.770 / 3.755   95.76 / 95.38 2.505 / 2.495   63.63 / 63.38
HWL-RSG 3.790 / 3.775   96.27 / 95.89 2.505 / 2.495   63.63 / 63.38
HWL-3.830 3.840 / 3.825    97.54 / 97.16 2.505 / 2.495   63.63 / 63.38
HWL-3.895 3.897 / 3.882    98.98 / 98.60 2.505 / 2.495    63.63 / 63.38
HWL3 (HWLTT) 3.770 / 3.755    95.76 / 95.38 2.411 / 2.401    61.24 / 60.99
HWL3-RSG 3.790 / 3.775    96.27 / 95.89 2.411 / 2.401    61.24 / 60.99
HWL3-3.830) 3.840 / 3.825    97.54 / 97.16 2.411 / 2.401    61.24 / 60.99
HWL3-3.895 3.897 / 3.882    98.98 / 98.60 2.411 / 2.401    61.24 / 60.99
CHD101 3.975 / 3.960    100.96 / 100.58 2.505 / 2.495    63.63 / 63.38
HXB (HWD3) 3.655 / 3.645    92.83 / 92.58 2.405 / 2.395    61.09 / 60.84
HXB-3.750 3.755 / 3.745    95.38 / 95.13 2.405 / 2.395    61.09 / 60.84
HWD4 3.655 / 3.645    92.83 / 92.58 2.411 / 2.401    61.24 / 60.99
HWD4-3.750 3.755 / 3.745    95.38 / 95.13 2.411 / 2.401    61.24 / 60.99
HMLC 3.897 / 3.882    98.98 / 98.60 2.505 / 2.495    63.63 / 63.38
HTW 3.770 / 3.755    95.76 / 95.38 2.797 / 2.787    71.04 / 70.79
Hardness Table
hardness
Waterways
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Standard Waterway Flushing

For a broad range of formations
A solid general purpose design

6

Face-Flushing Waterway

For broken/granular formations
Minimizes flishing of the core sample

5

Turbo Waterway

For competent formations
Offers high productivity

4
1

Extended Waterway Flushing

For competent and semi-broken rock
Functions well in mixed formation

Wedge Type (pie-shaped)

For competent and semi-broken rock
Functions well in mixed formations

2

3-Vee Design

For hard and competent formations
A free cutting bit for high productivity

3

Turbo Waterway

For competent formations
Offers high productivity

4

Face-Flushing Waterway

For broken/granular formations
Minimizes flishing of the core sample

5

Standard Waterway Flushing

For a broad range of formations
A solid general purpose design

6

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