Shaver post drivers can be mounted on a tractor or skid steer loader and are powered hydraulically. Oil from the tractor hydraulic system raises a spring loaded driving ram. At the touch of a lever on the hydraulic valve, the oil dumps back into the tractor reservoir and the spring loaded ram strikes the post, driving it into the ground.
The operator has complete control over the driving operation. The post is held in place with a spring loaded safety arm, allowing the operator to stand well to the side of the driving operation. Gentle blows start the post into the ground.
All Shaver drivers tilt and offset to make driving a vertical post easy. The tilt and offset functions are handled mechanically with a screw crank system, or hydraulically with the aid of cylinders. In extreme conditions, a pilot auger (4" diameter) can be mounted to the driver. The pilot auger hole allows a post to be driven into very hard ground.
There are three models of driver to choose from. Commercial fencing operators will want to choose either the HD-10 or HD-12 model. The HD-10 delivers 70,000 lbs of impact and can handle posts up to 8.75" in diameter. It requires 12 gallons of flow per minute at 1,500 psi.