Hydraulic Cylinder Deep Hole Drilling: What I've Learned From Hundreds of Jobs
I’ve lost count of how many hydraulic cylinders I’ve worked on. They’re everywhere in this trade — earthmoving equipment, forklifts, press brakes, oil field gear. The core problem is always the same: you need a straight, smooth bore to a depth that a conventional drill can’t touch. I’ve done them with gun drilling and with BTA. Here’s what works and what doesn’t. BTA Is Usually the Right Call For most hydraulic cylinder work, the bore diameter falls between 50mm and 200mm, with a length-to-diameter ratio somewhere between 20:1 and 50:1. A typical job might be an 80mm bore through 2 meters of steel. ...