Instruction
RB777 Jack hammer is a ideal tool that break up concrete and other solid object in the road construction and installation.It has characteristic of simple structure,high efficiency and handy use . As long as fix a drill shank, turn on air source, then working.
Air Leg Rock Drill-YT29A，YT28，YT27,YT24,YT23,YT23D,Y018,YSP45 are also sold by our company.

Hand-Hold Rock Drill-Y26,Y24,Y19A,Y6,Y10,TY24C are also sold by our company.

B77C, RB777, RB777C, B87C, G20, G10, B90, B67C, B47, TCA-7 are also sold by our company.

Internal Combustion Rock Drill YN27C, YN27A, YN27J, YN30A are also sold by our company.

Specification
Weight 37kg
Length 733mm
Rammer dia 57mm
Rammer stroke 189mm
Air pressure 0.63Mpa
Impact frequency 18.3Hz
Air consumption 34L/s
Air pipe inner dia 19mm（3/4”）
Lubrication capacity 30ml