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Outstanding drilling efficiency trusted by many users.
- The geometry of cutting teeth ensures large-diameter drilling with precision and at high speed.
- High drilling efficiency recognized and designated by major local governments throughout the country.
- Drilling a hole to attach the pipe socket on Hume pipes for sewage.
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Cutter size: |
o120mm to 220mm (o4-3/4" to 8-21/32") |
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Cutter length: |
150mm (5-7/8") |
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Shank: |
See size table. |
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Applicable electric drill: |
Hitachi PRT-60, Makita HR5000, Bosch GBH7DE, GBH10DC, or equivalent heavy-weight hammer drills |
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The actual sizes are in metric, and imperial sizes are approximate.
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| Cutter size D |
Cutters |
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mm |
inch |
Part No. |
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120mm |
4-3/4" |
HY120C |
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170mm |
6-11/16" |
HY170C |
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220mm |
8-21/32" |
HY220C |
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| Shanks |
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Part No. |
| No. 3 |
Makita/Hitachi Hexagonal |
HYSKHEX |
| Hitachi PRT-60 |
HYSKPRT |
| Bosch Spline Makita HR5000 |
HYSKSP |
| SDS-max |
HYSKMAX |
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| Center drill |
Part No. |
Overall length L |
| 13.0mm (33/64") |
HYCD13 |
176mm (6-59/64") |
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| Nominal diameter of vinyl-chloride-pipe socket |
Cutter size of hume pipe core bits
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| 100mm (3-7/8") |
120mm (4-3/4") |
| 150mm (5-7/8") |
170mm (6-11/16") |
| 200mm (7-7/8") |
220mm (8-21/32") |
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