AMS-Merlo's DBM 3500 is a self-contained mini cement mixer. It has a drum volume of 1,321 gallons delivering 4.6 cubic yards of concrete. The self-loading bucket handles up to 25 cubic feet of aggregate at each load cycle. The pump moves 66 gallons of water per minute into the mixing drum, suppling up to 37.7 square feet of concrete to be made in less than 15 minutes. 

The drum ensures a high-quality mix thanks to the high geometric volume of the drum, a reduced angle of inclination, and a double spiral propeller with variable pitch. The hydraulics on the self-loading bucket lifts and rotates the bucket as needed. The bucket door automatically opens to unload the aggregate into the drum.

Operator and machine safety are designed into every DBM concrete mixer. When unladen, the barrel offset, in relation to the frame axle, compensates for the cab weight and supplies optimal front and rear visibility. When fully loaded, the concrete mass is pushed onto the longitudinal axis of the machine to maintain the gravitational center.

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