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.  At full stroke, the ram delivers from 30,000 lbs of impact on the HD-8, to 100,000 lbs of impact on the HD-12.

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.  The HD-8 can be mounted on smaller utility or compact tractors.  It only requires 3 to 4 gallons of oil flow per minute.  The HD-8 can handle posts up to 7" in diameter, and 10' long.  It is not designed for commercial use.

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.  The HD-12 delivers 100,000 lbs of impact at full stroke.  It requires 15 gpm at 2,000 psi.  The HD-12 can handle posts up to 10.75" in diameter.

Model:	HD-8	HD-10	HD-12
Impact	30,000	71,500	100,000
Max post width	7"	8.75"	10.75"
Max post length	10'	10'	10'
Hyd tilt and offset option	yes	yes	standard
Tilt and offset	15 deg	15 deg	20 deg