Heavy-duty shell and auger tools for use in the toughest of boring conditions. Fabricated from high grade steel tube, with cable percussion
The thread form on the tool shoe has been optimized to enable shoes to be replaced with ease. It is a coarse pitch thread which is resistant to binding up.
The claycutter comes complete with plain tool shoe and claycutter ring. The bailer (or shell) comes with a plain tool shoe and steel clack valve. Optionallly, a leather clack may be supplied. This is more efficient in sealing water inside the tool body when bailing out the hole.
For tough gravelly deposits, a serrated tool shoe can be supplied.
These tools are available in nominal sizes 4" - 24", to fit casing with the equivalent nominal bore.
| Dimensions of Claycutter / Bailer | |||
| Nom. Diameter (inches) |
Tool O.D. (inches) |
To fit Casing (O.D. x I.D.) |
|
| 4" | 3 1/2" | 4 1/2" x 3 7/8" | |
| 5" | 4 1/2" | 5 1/2" x 4 7/8" | |
| 6" | 5 1/2" or 5" | 6 5/8" x 5 7/8" | |
| 8" | 7 5/8" or 7" | 8 5/8" x 7 7/8" | |
| 10" | 9 5/8" or 8 5/8" | 10 3/4" x 9 7/8" | |
| 12" | 11 1/2" or 10 3/4" | 12 3/4" x 11 7/8" | |
| 14" | 12 3/4" | 14" x 13" | |
| 16" | 14" | 16" x 15" | |
| 18" | 16" | 18" x 16 3/4" | |
| 20" | 18" | 20" x 18 3/4" | |
| 24" | 22" | 24" x 22 3/4" | |
| Effective length of each tool is 1.5 - 1.6 metres. For low-headroom drilling, shorter tools can be supplied on request. | |||
