The QL-Y28 hydraulic rock is a hi-tech product driven by high-pressure hydraulic oil.It adopts advanced technology and novel structure,featuring low energy consumption,small size,light weight,huge impact energy,fast drilling,low noise,little vibration,trivial labor intensity.It is widely applied to drill mines of marble,granite,metal,non-metal and coal mines.It can be applied to drill in geologic exploration as well as drill shot hole in rock mining,electric plants,railways,ports,bases,capital construction and national defense engineering.It can also be applied to control blast in old building removal in cities.Its working efficiency is 5 to 10 times of that of pneumatic drill,while consuming 1/3 energy of the latter.It is an ideal tool to replace the pneumatic drill. Drilling performance:applicalbe to hard,semi-hard and soft rocks;drilling diameter from 36mm to 50mm;drilling speed over 800mm-1000mm/min;depth up to 9m.Its efficiency and performance overmatch foreigh counterparts. The hydraulic rock drill is composed of three parts: 1. Hydraulic hammer drill. 2. Hydraulic power station(Anti-blast model,Non anti-blast model and diesel engine model) 3. Handheld air-driven or vertical and horizontal hydraulic rack driving system,ground jack type. According to different engineering requirements,we can offer various supporting devices,such as manual handheld rack,air ground jack,horizontal rack for mining marble and vertical rack,and railway rack for mines,which are for different working conditions.