Recent Blogs
Tappet Valve for a Rock Drill: Mechanism, Diagram, Parts, and Blow-Rate Formula Explained
How a tappet valve runs a pneumatic rock drill — porting, timing, and sizing for mining percussion drills. Real numbers from jackleg and stoper builds.
Rock Drill with Balanced Piston Valve Mechanism: How It Works, Diagram, and Parts Explained
How a balanced piston valve rock drill works, with formulas, a worked penetration-rate example, and real mining applications from Sandvik and Atlas Copco rigs.