Rock Systems Portable 4 Bin Blending Hopper, Model 108-4P 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 rectangle tube reinforcing at the hopper top and angle iron reinforcing at the hopper mid-section and bottom section; self-relieving tapered hopper bottom opening to minimize bridging; full length skirtboards with Rema Skirt 50 adjustable rubber flashing to prevent leakage between hopper bottom and belt feeder; adjustable discharge gate with hand crank to control material flow from each hopper.

b. Each belt feeder is 30” wide x 8’ long with fixed speed 5 h.p. electric motor, Dodge TXT425 shaft mount speed reducer, v-belt drive and OSHA drive guard; Dodge 12” diameter rubber lagged head pulley mounted on Dodge 2-7/16” SCM pillow block bearings; Dodge 12” diameter self-cleaning tail pulley mounted on Dodge 1-15/16” SCM pillow block bearings; screw take-up assemblies; OSHA tail terminal guard and side nip guards; ICC CEMA “C” 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 15 h.p. electric motor, Dodge TXT415 shaft mount speed reducer, v-belt drive and OSHA drive guard; Dodge 12” diameter rubber lagged head pulley mounted on Dodge 2-7/16” SCM pillow block bearings; Dodge 12” diameter self-cleaning tail pulley mounted on Dodge 2-3/16” SCM pillow block bearings; screw take-up assemblies; OSHA tail terminal guard; head pulley nip guards; ICC CEMA “C” 35 degree troughing idlers with 5” diameter rolls; ICC CEMA “C” return idlers with 5” diameter rolls; 2 ply conveyor belting with 3/16” x 1/16” rubber covers; Flexco 140 mechanical belt splice; 9’-6” long conveyor extension beyond the hoppers.

d. Portable trailer constructed of heavy duty wide flange beams which are braced for optimum rigidity; wide flange vertical beams and angle iron 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.

f. Electric motor control panel with main disconnect, AC Tech SMV variable speed drives for the belt feeders, branch circuit protection, fixed speed starter for the collecting conveyor, all mounted on a skid support structure bolted to the trailer frame and wired into the electric motors.

Optional Equipment:

Bulkheads, liners, belt scrapers, bin extensions, grizzlies, bin vibrators, screw conveyors, safety stop switch with pull cords, belt scales, return idler guards, custom paint.