J.B. Engineering corporation manufactures jb-11 short machines which operate continuously on the turret head principle. This machine blends the mixer of cement, aggregate water and mixes it in proportions with aggregate size less than 10 mm for hose inner diameter of 38 to 40mm at high velocity. It is fitted with spray nozzle to form a layer of pneumatically applied concrete on surface. A mixer is fed in to machine hopper having sieving and fitted with rotor wherein the mixer is pressurized, metered in to a dry air stream. Mixer is conveyed through hosepipes of diameter from 38mm to 80 mm to a nozzle having water-mixing arrangement and sprayed with high velocity on surface to form a layer. Rotor is driven by the electric motor through a speed reducing gear. Rotor is kept airtight by pressing it in between two round rubber seals. Lower seal attached on to the pressure plate of the gearbox, upper to clamping plate.
It comes with following technical specifications-
Length: 1450 mm
Width: 750 mm
Hieght: 1050 mm
Height hopper: 550 mm
Recommended hose dia: 65 mm up to 10m verticle distance
Electric motor: twin speed 10. Hp, 1440 rpm
Air consumption: 7kg/cm sq. / 350 cfm
