Feature： YT29A is powered by compressed air, with centralized operating mechanism, flexible start, air-water linkage, convenient use, simple maintenance, low noise, small vibration, energy saving and high efficiency, long service life of parts, high versatility, good reliability, high efficiency, strong function of purging blast holes and large rotating torque, so it is worried about similar products. It is mainly used for drilling, blasting and anchor cable holes in earth rock engineering. Application: tunneling and support in mining, transportation, water conservancy, hydropower and other projects. It is mainly used for quarries - dividing rocks. Our air-leg rock drills have following features: 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.

SPECIFICATIONS for YT series pneumatic rock drilling machine with air leg
Model	YT28	YT27	YT29A	YT24C	TY24
Weight	26kgs	27kgs	26.5kgs	24kgs	24kgs
Length	661mm	668mm	659mm	628mm	678mm
Air pressure	0.4-0.63Mpa	0.4-0.63Mpa	0.4-0.63Mpa	0.4-0.63Mpa	0.4-0.63Mpa
Impact frequency	≧37HZ	≧39HZ	≧39HZ	≧37HZ	≧31HZ
Air consumption	≦81L/s	≦86L/s	≦88L/s	≦80L/s	≦67L/s
Impact energy	≧70J	≧75J	≧78J	≧65J	≧65J
Cylinder*stroke	80mm*60mm	80mm*60mm	82mm*60mm	76mm*60mm	70mm*70mm
Air pipe diameter	25mm	19mm	25mm	25mm	19mm
Shank dimension	22*108mm	22*108mm	22*108mm	22*108mm	22*108mm
Drilling depth	5m	5m	5m	5m	5m
Bit diameter	34-42mm	34-45mm	34-45mm	34-42mm	34-42mm