As soon as the hydraulic tool’s trigger is pulled, hydraulic fluid enters through its standard single acting valve into a rubber line to fill the top of its cylinder through drilled ports. The fluid forces the cylinder rod in the tool’s handle to the cylinder’s base, or butt end. This actuates the piston to pull down on the roller cam to close the tool and knock the hole out OSB webbing, or other materials, with a powerful punch. This creates 1,500 ft/lbs of force! The tool is self cleaning because of the unique, patentable hollow punch die which allows plugs to simply fall out of the die after the punches. As soon as one hole is punched, the tool is open and ready for the next punch.
The punch head’s die pulls through the engineered wood truss or joist beam with power created from the double set of roller bearings in the ramped cam bearing slots on either side of the punch head plates. The roller bearings are machined into the double top T-1 3/16” plates of the punch head at an angle engineered to maximize the force.
A positive force advantage occurs when the distance from the center line of the die to the center pivot becomes equal to or less than the distance from the roller bearings to the pivot pin as the punch head operates. This is the first lever advantage (the distance from the die to the pivot bearing is less than the distance from the pivot to the actuator bearing in the end-of-cut position). The angle of the slot in the ramped cam for the roller bearings creates an additional negative force advantage. The distance, or lever advantage, between the pivot pin (the pivot point) to the bearings in the open position of the tool compared to the distance between the pivot and the die holder and the angle of the slot creates this negative force advantage. The incline advantage occurs as the bearings are forced down into the decreasing angle of the slot as the tool’s punch head closes. In other words, the ramped cam angle of the roller bearings decreases as the distance from the pivot pin to the roller bearing increases when the punch head operates.