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Reference and Specifications Chart
All Acker Diamond Bits and Reaming Shells conform to the standards set forth by the Diamond Core Drill Manufacturers Association ( DCDMA ).
The "WG" design, "WM" design, and the Large design are validated by the DCDMA and the American National Standards Institute.
Size |
Diamond Core Bits |
Reaming Shells |
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Nominal Core Diameter |
Nominal Hole Diameter |
Set Dimensions (+/-0.005) |
Set Dimensions (+/-0.005) |
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inches |
mm. |
inches |
mm. |
O.D. |
I.D. |
O.D. |
mm. |
|
RW |
3/4 |
19.0 |
1-1/8 |
28.5 |
1.160 |
.735 |
1.175 |
29.8 |
XRP * |
7/8 |
21.1 |
1-5/16 |
33.3 |
1.295 |
.875 |
1.310 |
33.2 |
EX-EWG |
7/8 |
21.2 |
1-1/2 |
37.7 |
1.470 |
.845 |
1.485 |
37.7 |
EXM-EWM |
7/8 |
21.2 |
1-1/2 |
37.7 |
1.470 |
.845 |
1.485 |
37.7 |
AX-AWG |
1-1/8 |
30.0 |
1-7/8 |
48.0 |
1.875 |
1.185 |
1.890 |
48.0 |
AXM-AWM |
1-1/8 |
30.0 |
1-7/8 |
48.0 |
1.875 |
1.185 |
1.890 |
48.0 |
BX-BWG |
1-5/8 |
42.0 |
2-3/8 |
59.9 |
2.345 |
1.655 |
2.360 |
59.9 |
BXM-BWM |
1-5/8 |
42.0 |
2-3/8 |
59.9 |
2.345 |
1.655 |
2.360 |
59.9 |
NW-NWG |
2-1/8 |
54.7 |
3 |
75.7 |
2.965 |
2.155 |
2.980 |
75.7 |
NXM-NWM |
2-1/8 |
54.7 |
3 |
75.7 |
2.965 |
2.155 |
2.980 |
75.7 |
HX-HWG |
3 |
76.2 |
3-7/8 |
98.8 |
3.890 |
3.000 |
3.907 |
99.2 |
2-3/4" x 3-7/8" |
2-3/4 |
68.3 |
3-7/8 |
98.8 |
3.840 |
2.690 |
3.875 |
98.4 |
4" x 5-1/2" |
4 |
100.8 |
5-1/2 |
139.6 |
5.435 |
3.970 |
5.495 |
139.6 |
6" x 7-3/4" |
6 |
151.6 |
7-3/4 |
196.8 |
7.655 |
5.970 |
7.750 |
196.9 |
* Optional Sizes |
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Size |
Casing Bits |
Casing Reaming Shells |
Casing Shoes |
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Nominal Core |
. Nominal Hole |
Set Dimensions |
Dimensions |
Set Dimensions |
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inches |
mm |
inches |
mm |
O.D. |
I.D. |
O.D. |
inches |
mm |
O.D. |
I.D. |
|
EX-EW |
1-13/32 |
36.7 |
1-7/8 |
47.6 |
1.875 |
1.405 |
1.890 |
1-29/32 |
48.0 |
1.875 |
1.495 |
AX-AW |
1-25/32 |
45.2 |
2-3/8 |
60.0 |
2.345 |
1.780 |
2.360 |
2-3/8 |
59.9 |
2.345 |
1.900 |
BX-BW |
2-7/32 |
56.3 |
3 |
76.2 |
2.965 |
2.215 |
2.980 |
2-31/32 |
75.6 |
2.965 |
2.370 |
NX-NW |
2-27/32 |
72.2 |
3-1/2 |
88.9 |
3.615 |
2.840 |
3.630 |
3-5/8 |
92.2 |
3.615 |
2.992 |
HX-HW |
3-25/32 |
96.0 |
4-5/8 |
117.4 |
4.625 |
3.777 |
--- |
--- |
--- |
4.625 |
3.925 |
PW |
4-5/8 |
117.4 |
5-21/32 |
143.6 |
5.650 |
4.633 |
--- |
--- |
--- |
5.650 |
4.778 |
SW |
5-51/64 |
147.2 |
6-51/64 |
172.6 |
6.790 |
5.633 |
--- |
--- |
--- |
6.790 |
5.778 |
UW |
6-13/16 |
173.0 |
7-13/16 |
198.4 |
7.800 |
6.755 |
--- |
--- |
--- |
7.800 |
6.905 |
ZW |
7-29/32 |
200.8 |
8-13/16 |
223.8 |
8.810 |
7.755 |
--- |
--- |
--- |
8.810 |
7.905 |
Plug Bits |
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Size |
Hole Diameter |
Set Dimensions |
inches |
mm. |
XRP |
1-1/4 |
31.7 |
1.295 |
EWG |
1-1/2 |
38.1 |
1.470 |
AWG |
1-7/8 |
47.6 |
1.875 |
BWG |
2-3/8 |
60.3 |
2.345 |
NWG |
3 |
76.2 |
2.965 |
"Q" Wire Line Bits |
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Size |
Nominal Hole Diameter |
Nominal Core Diameter |
Standard Set O.D. Dimension |
Reaming Shell Set O.D. Dimension |
Set I.D. Dimension |
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inches |
mm. |
inches |
mm. |
inches (approx.) |
inches (approx.) |
inches (approx.) |
|
AQ |
1-57/64 |
48.0 |
1-1/16 |
27.0 |
1.875 |
1.890 |
1.062 |
BQ |
2-23/64 |
60.0 |
1-7/16 |
36.5 |
2.345 |
2.360 |
1.437 |
NQ |
2-63/64 |
75.8 |
1-7/8 |
47.6 |
2.965 |
2.980 |
1.875 |
HQ |
3-25/32 |
96.0 |
2-1/2 |
63.5 |
3.766 |
3.782 |
2.500 |
PQ |
4-53/64 |
122.6 |
3-11/32 |
85.0 |
4.805 |
4.827 |
3.343 |
"Q" is a registered trademark of Boart Longyear Co. ( Above is not DCDMA standard ) |
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