YT28 is a kind of high efficincy air-leg rock drill, which is mainly uesed in mine exploitation, railway, highway, tunnel excavation, water conservancy construction and defence project facility.

Product details as follows:
Weight: 26kg
Length: 661mm
Cylinder diameter: 80mm
Stroke of piston: 60mm
Operating air pressure: 0.4MPa_0.63MPa
Impact frequency: ≥28Hz ≥35Hz ≥36Hz
Air consumption: ≤52(L/s) ≤58(L/s) ≤82(L/s)
Impact power: ≥44J ≥63J ≥70J
Torque of drill rod: ≥15N*m ≥19N*m ≥23N*m
Rotating speed of drill rod: ≥250r/min ≥260r/min ≥300r/min
Drilling speed: ≥250mm/min ≥400mm/min ≥470mm/min
Noise: ≤124dB ≤125dB ≤127dB
Air pipe inner dia: 25mm
Water pipe inner dia: 13mm
Bit head diameter: Φ34-42mm
air leg rock drill