·Fit for wet drilling in medium-hard or hard rock.

·Grouped contril mechanism,quit to start up,whith"air on,water on,air off,water off"mechanism,convenient to handle and easy to maintain and repair.

·YT28 differs from similar products particularly in its high efficiency,strong flushing and powerful torque.

·YT28 Air-leg Rock Drills most fit for drilling horizontal and inclined blastholes in medium-hard and hard rock with a hardness of (f=8-18)

.YT28 may also be uesed for making roof bolting holes.The drill is an important instrument in mining.

·May be used together with FT140(BE)or Ft160BC(BD) Air-leg and FY200B Line Oiler with transparent casing, The tool can also be mounted on rig or a wagon.

Technical specifications
Type	YT28
Weight	26 (Kg)
Length	661 (mm)
Cylinder dia	φ80 (mm)
Piston stroke	60 (mm)
Working pressure	0.4~0.5 (Mpa)
Impact energy	≥60.2 (J)
Impact frequency	≥37(Hz)
Air consumption	≤81 (L/s)
Working water pressure	0.2~0.3 (Mpa)
Air pipe inner dia	φ25 (mm)
Water pipe inner dia	φ13 (mm)
Rock drill hole dia	φ34~φ42 (mm)
Rock drill hole depth	5 (m)
Shank size	22×108 (mm)