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PMM12 type coal mining bit

Type Dimension(mm) Note

t H S R α α₁ e

PMM1215 15.5 22.0 7.0 5.0 15° 4° 1.5 G83556

PMM1222 22.0 22.5 7.5 9.5 11° / G81034

PMM1230 30.0 35.0 12.0 8.0 8° 8° 1.0 X7406

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