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American Heller's counter boring tools can be designed in either push or pull styles.
Unidex
Contact American Heller at 800-950-2487 for information.
BTA Heller
Push style counter boring operates in the same manner as the solid boring and trepanning drilling methods. Therefore, they can operate on any single tube (BTA/STS) deep hole drilling machine with no alteration in machine setup -- except for normal changes that result when tool sizes change. The figure below illustrates a BTA/STS push style counter boring tool where coolant and chip removal is through the ID of the boring bar.
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If bore straightness is critical to your part processing and you do not wish to make modifications to your machine setup -- i.e. the addition of a Lantern -- American Heller offers a piloted push style counter boring tool. The piloted tool uses a fiber pilot guide to pilot off the pre-bore. Therefore, the piloted tool will be concentric to the pre-bore to within +/- 0.0005". The figure below illustrates a BTA/STS piloted counter boring tool in which the chip exhaust is through the ID of the boring bar.
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The following table depicts our standard line of indexable counter boring tools. These are push-style tools and can be designed with or without a pilot. For information on our pull-boring tools please give us a call at 1-586-677-2300. Click here for a parts diagram.
| 1.181-1.256 |
3 |
11A |
11A |
.315 |
FL-6 |
K-13 |
| 1.257-1.334 |
4 |
| 1.335-1.455 |
5MR |
| 1.456-1.574 |
6 |
11A |
11A |
.315 |
FL-8 |
| 1.575-1.731 |
7MR |
| 1.732-1.849 |
8 |
16A |
16A |
.413 |
FL-10 |
K-14 |
| 1.850-2.046 |
9 |
| 2.047-2.243 |
10 |
16A |
16A |
.413 |
FL-14 |
| 2.244-2.400 |
11A |
16A |
16A |
.413 |
FL-18 |
K-15 |
| 2.401-2.676 |
12 |
SKT-2 |
| 2.677-2.952 |
13A |
20A |
20A |
.532 |
FL-18 |
| 2.953-3.188 |
14 |
20A |
20A |
.532 |
FL-18 |
SKT-4 |
| 3.189-3.582 |
15 |
| 3.583-3.869 |
15 |
20A |
20A |
.532 |
FL-18 |
SKT-5 |
| 3.897-4.369 |
16C |
| 4.370-4.841 |
17A |
23A |
23A |
.650 |
FL-18 |
| 4.842-5.314 |
18A |
| 5.315-5.865 |
19 |
23A |
23A |
.650 |
FL-18 |
| 5.315-5.865 |
20 |
Other sizes quoted on request.
Tools can be used for either internal or external (chips forward) chip exhaust.
The following table depicts our standard line of indexable reamers for the single tube system. These tools may be designed for either chips forward or chips back coolant exhaust. Click here for a parts diagram.
| .500-.610 |
1N |
No Cartridge Used Under .985" Dia. |
R11L/.012" |
R11H/.032" |
FL-2 |
| .611-.707 |
CN |
| .708-.866 |
P/A |
FL-4 |
| .867-.984 |
2 |
| .985-1.181 |
3 |
11AF |
FL-6 |
| 1.182-1.456 |
5MR |
| 1.457-1.850 |
8 |
16AF |
R16L/.024" |
R16H/.060" |
FL-8 |
| 1.851-2.196 |
13 |
FL-10 |
| 2.197-2.969 |
13 |
20AF |
R20L/.038" |
R20H/.096" |
FL-14 |
| 2.970-3.516 |
16C |
FL-18 |
| 3.517-4.891 |
18A |
Other sizes quoted on request
* Depth of cut per side
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