The QJ340 mobile jaw crusher from Sandvick includes a vibratory feeder with automatic control to regulate the feed into the crusher, a hydraulic adjustment system to regulate the product size to be crushed, instant reverse crushing action to assist in clearing blockages along with the Vogel automatic central lubrication system that increases machine up-time. In addition, the hydraulic legs offer increased stability and servicing capabilities. Also, a high crushing speed, together with a large feed opening, are designed to provide impressive rates of production and yet still provide superb reduction ratios.