BBC55 Retractable Roller Cone Rock Head
This patented head boasts major cutting ability up to 20,000psi rock! Versatility and simplicity are a must, thats why the BBC55 opens and closes via cam shaft, and can be used with slip O-ring Hex Auger. Combined with durability and versatility, this BBC55 Heavy Duty Cutting Head is sure to tackle any job you put in front of it!
Retractable Roller Cone Rock Head in Action!
| HEX (“) | HEAD SIZE (DIA.) | CLOSED | OPEN |
|---|---|---|---|
| 2-1/4″ (57.2MM) | 20″/508MM | 16.50″ | 21.50″ |
| 2-1/4″ (57.2MM) | 22″/559MM | 18.50″ | 23.50″ |
| 2-1/4″ (57.2MM) | 24″/610MM | 20.50 | 25.50″ |
| 3″ (76.2MM) | 20″/508MM | 16.50″ | 21.50″ |
| 3″ (76.2MM) | 22″/559MM | 18.50″ | 23.50″ |
| 3″ (76.2MM) | 24″/610MM | 20.50″ | 25.50″ |
| 3″ (76.2MM) | 26″/660MM | 22.50″ | 27.50″ |
| 3″ (76.2MM) | 28″/711MM | 24.50″ | 29.50″ |
| 3″ (76.2MM) | 30″/762MM | 26.50″ | 31.50″ |
| 3″ (76.2MM) | 32″/813MM | 28.50″ | 33.50″ |
| 3″ (76.2MM) | 34″/864MM | 30.50″ | 35.50″ |
| 3″ (76.2MM) | 36″/914MM | 32.50″ | 37.50″ |
| 3″ (76.2MM) | 38″/965MM | 34.50″ | 39.50″ |
| 3″ (76.2MM) | 40″/1016MM | 36.50″ | 41.50″ |
| 3″ (76.2MM) | 42″/1067MM | 38.50″ | 43.50″ |
| 3″ (76.2MM) | 44″/1118MM | 40.50″ | 45.50″ |
| 3″ (76.2MM) | 46″/1168MM | 42.50″ | 47.50″ |
| 3″ (76.2MM) | 48″/1219MM | 44.50″ | 49.50″ |
| 4″ (101.6MM) | 20″/508MM | 16.50″ | 21.50″ |
| 4″ (101.6MM) | 24″/610MM | 20.50″ | 25.50″ |
| 4″ (101.6MM) | 26″/660MM | 22.50″ | 27.50″ |
| 4″ (101.6MM) | 28″/711MM | 24.50″ | 29.50″ |
| 4″ (101.6MM) | 30″/762MM | 26.50″ | 31.50″ |
| 4″ (101.6MM) | 32″/813MM | 28.50″ | 33.50″ |
| 4″ (101.6MM) | 34″/864MM | 30.00″ | 35.50″ |
| 4″ (101.6MM) | 36″/914MM | 32.50″ | 37.50″ |
| 4″ (101.6MM) | 38″/965MM | 34.50″ | 39.50″ |
| 4″ (101.6MM) | 40″/1016MM | 36.50″ | 41.50″ |
| 4″ (101.6MM) | 42″/1067MM | 38.50″ | 43.50″ |
| 4″ (101.6MM) | 44″/1118MM | 40.50″ | 45.50″ |
| 4″ (101.6MM) | 46″/1168MM | 42.50″ | 47.50″ |
| 4″ (101.6MM) | 48″/1219MM | 44.50″ | 49.50″ |
| 4″ (101.6MM) | 54″/1372MM | 50.50″ | 55.50″ |
| 4″ (101.6MM) | 60″/1524MM | 56.50″ | 61.50″ |
| 4″ (101.6MM) | 66″/1676MM | 62.50″ | 67.50″ |
| 4″ (101.6MM) | 72″/1831MM | 68.50″ | 73.50″ |
| 5″ (127MM) | 24″/610MM | 20.50″ | 25.50″ |
| 5″ (127MM) | 26″/660MM | 22.50″ | 27.50″ |
| 5″ (127MM) | 28″/711MM | 24.50″ | 29.50″ |
| 5″ (127MM) | 30″/762MM | 26.50″ | 31.50″ |
| 5″ (127MM) | 32″/813MM | 28.50″ | 33.50″ |
| 5″ (127MM) | 34″/864MM | 30.50″ | 35.50″ |
| 5″ (127MM) | 36″/914MM | 32.50″ | 37.50″ |
| 5″ (127MM) | 38″/965MM | 34.50″ | 39.50″ |
| 5″ (127MM) | 40″/1016MM | 36.50″ | 41.50″ |
| 5″ (127MM) | 42″/1067MM | 38.50″ | 43.50″ |
| 5″ (127MM) | 44″/1118MM | 40.50″ | 45.50″ |
| 5″ (127MM) | 46″/1168MM | 42.50″ | 47.50″ |
| 5″ (127MM) | 48″/ 1219MM | 44.50″ | 49.50″ |
| 5″ (127MM) | 54″/1372MM | 50.50″ | 55.50″ |
| 5″ (127MM) | 60″/1524MM | 56.50″ | 61.50″ |
| 5″ (127MM) | 66″/1676MM | 62.50″ | 67.50″ |
| 5″ (127MM) | 72″/1831MM | 78.50″ | 73.50″ |
