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PDC Concave Bit is a full-scale drilling bit, mainly be used in construction ,mining, geology, coal, water conservancy and hydropower, highway, high speed railway and bridge etc.
Standard Sizes for Immediate Availability: 2" to 8 1/2" (51mm to 215.9mm)
Other sizes available upon request
Wings | ||
mm | inch | |
51 | 2” | 3 |
65 | 2 1/2” | 3 |
76 | 3” | 3 |
89 | 3 1/2” | 3 |
92 | 3 5/8” | 3 / 4 |
95 | 3 3/4” | 3 / 4 |
98 | 3 7/8” | 3 / 4 |
102 | 4” | 3 / 4 |
108 | 4 1/4” | 3 / 4 |
114 | 4 1/2” | 3 / 4 |
127 | 5” | 3 / 4 |
133 | 5 1/4” | 3 / 4 |
146 | 5 3/4” | 3 / 4 |
152 | 6” | 3 / 4 |
171 | 6 3/4” | 3 / 4 / 5 |
191 | 7 1/2” | 3 / 4 / 5 |
216 | 8 1/2” | 4 / 5 / 6 |

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