Tapered Button Bit 12° Handheld And Small Hole Drilling
The tapered drill bit is a drill bit used in conjunction with a pneumatic rock drill and a taper rod. It is connected to the drill rod through the taper to perform drilling operations. It is mainly used for secondary crushing in mines, bolting, drifting and other fields.
| Tapered Drill Bit | Diameter | No.×button diameter | Flushing hole | Weight (kg) | ||||
| 12° | mm | inch | Front | Gauge | Angle | Front | Side | |
|
Button bit,Short skirt | 28 | 1 7/64 | 1×7 | 3×7 | 20° | 1 | 1 | 0.20 |
| 28 | 1 7/64 | 1×7 | 4×7 | 35° | 1 | 1 | 0.20 | |
| 29 | 1 9/64 | 1×7 | 3×7 | 40° | 1 | 1 | 0.21 | |
| 30 | 1 3/16 | 1×7 | 3×7 | 40° | 1 | 1 | 0.22 | |
| 30 | 1 3/16 | 1×7 | 4×7 | 35° | 1 | 1 | 0.22 | |
| 30 | 1 3/16 | 2×7 | 4×7 | 30° | 1 | 1 | 0.22 | |
| 32 | 1 1/4 | 2×7 | 5×7 | 40° | 2 | 1 | 0.24 | |
| 33 | 1 19/64 | 2×7 | 5×7 | 35° | 1 | 1 | 0.25 | |
| 34 | 1 11/32 | 2×7 | 5×8 | 35° | 1 | 1 | 0.29 | |
| 35 | 1 3/8 | 2×7 | 4×7 | 35° | 1 | 1 | 0.33 | |
| 35 | 1 3/8 | 2×7 | 5×8 | 35° | 2 | 1 | 0.33 | |
| 35 | 1 3/8 | 2×7 | 5×9 | 35° | 1 | 1 | 0.33 | |
| 36 | 1 27/64 | 2×7 | 5×9 | 35° | 1 | 1 | 0.37 | |
| 37 | 1 29/64 | 2×7 | 5×9 | 40° | 1 | 1 | 0.38 | |
| 38 | 1 1/2 | 1×9 | 3×9 | 40° | 1 | 1 | 0.40 | |
| 38 | 1 1/2 | 2×7 | 5×9 | 35° | 1 | 1 | 0.40 | |
| 41 | 1 5/8 | 2×7 | 5×9 | 35° | 1 | 1 | 0.41 | |
|
Button bit, Long skirt | 32 | 1 1/4 | 2×7 | 5×7 | 35° | 1 | 1 | 0.30 |
| 33 | 1 19/64 | 2×7 | 5×7 | 35° | 1 | 1 | 0.31 | |
| 33 | 1 19/64 | 2×7 | 6×7 | 40° | 2 | 1 | 0.31 | |
| 35 | 1 3/8 | 2×7 | 6×7 | 40° | 2 | 1 | 0.35 | |
| 48 | 1 1/2 | 2×7 | 5×9 | 35° | 1 | 1 | 0.41 | |
| 41 | 1 5/8 | 2×7 | 5×9 | 35° | 1 | 1 | 0.42 | |
![]() | 35 | 1 3/8 | 2×7 | 5×9 | 35° | 1 | 1 | 0.38 |
| 36 | 1 27/64 | 2×7 | 5×9 | 35° | 1 | 1 | 0.39 | |
| 38 | 1 1/2 | 2×7 | 5×9 | 35° | 1 | 1 | 0.41 | |
| 41 | 1 5/8 | 2×7 | 5×9 | 35° | 1 | 1 | 0.42 | |
|
Cross-type bit | 29 | 1 9/64 | 12×8 | 1 | 2 | 0.25 | ||
| 30 | 1 3/16 | 12×8 | 1 | 2 | 0.26 | |||
| 32 | 1 1/4 | 12×8 | 1 | 2 | 0.30 | |||
| 33 | 1 19/64 | 12×8 | 1 | 2 | 0.32 | |||
| 35 | 1 3/8 | 12×8 | 1 | 2 | 0.36 | |||
| 36 | 1 27/64 | 12×8 | 1 | 2 | 0.39 | |||
| 38 | 1 1/2 | 12×8 | 1 | 2 | 0.43 | |||
| 40 | 1 37/64 | 12×8 | 1 | 2 | 0.46 | |||
| 41 | 1 5/8 | 14×8 | 1 | 2 | 0.49 | |||