Rock Systems Portable 4 Bin Blending Hopper complete as follows:

a. Each hopper is 9’-6” wide x 14’ long with 20 tons storage capacity constructed from 1/4” thick steel plate with reinforcing at the hopper top and mid-section; self-relieving tapered hopper bottom opening to minimize bridging; full length skirtboards with adjustable rubber flashing to prevent leakage between hopper bottom and belt feeder; adjustable discharge gate to control material flow from each hopper.

b. Each belt feeder is 30” wide x 8’ long with fixed speed Weg 5 h.p. electric motor, Falk 4207J25 shaft mount speed reducer, v-belt drive and OSHA drive guard; Precision 12” diameter rubber lagged head pulley mounted on Dodge 2-7/16” SC pillow block bearings; Precision 12” diameter self-cleaning tail pulley mounted on Dodge 1-15/16” SC pillow block bearings; screw take-up assemblies; OSHA tail terminal guard and side nip guards; Hewitt-Robins CEMA “B” flat belt idlers with 5” diameter rolls mounted on close centers; 3 ply vulcanized endless conveyor belting. Belt speed setup for 90 fpm.

c. Collecting conveyor is 36” wide with fixed speed Weg 10 h.p. electric motor, Falk 4203J14 shaft mount speed reducer, v-belt drive and OSHA drive guard; Precision 12” diameter rubber lagged head pulley mounted on Dodge 2-3/16” SC pillow block bearings; Precision 12” diameter self-cleaning tail pulley mounted on Dodge 1-15/16” SC wide slot take-up bearings; screw take-up assemblies; OSHA tail terminal guard; head pulley nip guards; Hewitt-Robins CEMA “B” 35 degree troughing idlers with 5” diameter rolls; Hewitt-Robins CEMA “B” return idlers with 5” diameter rolls; 2 ply conveyor belting with 3/16” x 1/16” rubber covers; Flexco 140 mechanical belt splice; 6’ long conveyor extension beyond the hoppers which folds for transport.

d. Portable trailer constructed of heavy duty wide flange beams which are braced for optimum rigidity; wide flange vertical beams and angle cross members tie all hoppers and trailer together; tandem axle chassis with dual 11 x 22.5 tires, air brakes, king pin, rear lighting, mud flaps and blocking pads.

e. One rust inhibitor prime coat and one finish coat gray paint for all equipment; one finish coat safety yellow paint for all guarding.