1) Fit for wet drilling in medium-hard or hard rock. 2) Grouped control mechanism,quick to start up, with "air on ,water on, air off,water off" mechanism,convenient to handle and easy to maintain and repair. 3) Energy-saving and efficient, long service life of parts, parts highly interchangeable and reliable performance. 4) OKYPdiffers form similar products particularly in its high efficiency, strong flushing and powerful torque.  

	YO18	JY20	YT24	ZY24	YT28
Cylinder Diameter mm	58	63	70	70	80
Piston Strock mm	45	55	70	70	60
Air Consumption m3/min	1.3	2	3	3	5
Impacts HZ	31	33	34	34	37
Working Pressure Mpa(kg/cm2)	0.4~0.6	0.4~0.6	0.4~0.6	0.4~0.6	0.4~0.6
Water Pipe Inner Diameter mm	19	19	19	19	25
Traneal Inner Diameter mm	8	8	8	13	13
Length mm	550	561	678	690	661
Weight kg	18	20	24	25	26
Shank mm	22*108	22*108	22*108	22*108	22*108

	FT180	FT140	FT140A	FT160B
Length(Min.) mm	1425	1672	1668	1800
Propulsion Length mm	950	1250	1339	1365
Thrust kg	100	140	150	160