Diesel Engine Hammer Crusher The small diesel hammer crusher is also called diesel hammer mill, which is equipped with diesel engine instead of electric motor. It is suitable for crushing medium hardness and fragile rocks, such as limestone, coal, salt, gypsum, brick, tile, etc. Diesel Engine Small Crusher Features: 1. Suitable for middle and fine crushing of different sizes of materials. 2. Low investment, the diesel engine is cheaper than that with electric motor 3. Equipped with two wheels, which is a perfect choose for outdoor operation 4. Simple structure, easy to operate and maintain Working Principle : Driven by the diesel engine, the rotor rotates at a high speed and there are series of beaters on the rotor. When the raw material get into the working area of beaters, it will be continuously impacted by the rotating hammers. The impacted particle meeting the required size will be discharged from the outlet, and the big size material is brought back to the crushing area for re-crushing until reaching the required size.