Henan Dajia cone crusher series has a feature of reliable construction, high productivity , easy adjustment and low operating cost. It is widely used both domestic and abroad in metallurgy, architecture, roak making , chemistry and silicate industry for crushing various mid-hard and hard ores and rocks. It's spring release system acts as an overload protection to allow the tramp iron to pass without damage to the crushing chamber. The sealing system uses double dry oil and water sealing to separate the lubricating oil from stone dust to provide its reliable operationg .The crushing chamber has atandard, medium and short head typer to fit the needs of medium crushing , medium-fine crushing and fine crushing.