YT27 Type rock drill is a kind of high efficiency air leg rock drill machine. It's mainly used for blasting holes and other drilling works, such as in quarries, railway construction, water conservancy construction and national defense project facility. It's matched with FT160A or FT160B air leg and FY250 oil feeder as usual, which is suitable for the wet drilling under various rocks at clinic and incline orientations, also can be used in the trolley without air leg to be feed. Product Specifications Weight 27kgs Overall Dimension 668x248x202mm Cylinder Dia. 80mm Stroke 60mm Working Pressure 0.63Mpa Water Pressure 0.3Mpa Impact Frequency ¡Ã36.7Hz Air Consumption ¡Ã83.3L/s Impact Energy ¡Ã75.5J Air Hose Inside Dia. 25mm Water Hose Inside Dia. 13mm Drill Bits Dia. 34~45mm Max. Drilling Depth 5M Drilling Rod Size H22 x 108mm Air Leg Type: FT160A Leg Length 1668~3006mm Stroke 1338mm Weight 17kgs Air Leg Type: FT160B Leg Length 1428~2526mm Stroke 1098mm Weight 16kgs Oil Feeder Type: FY250 Capacity 250ml Weight 1.20kgs