Source: Masonry Construction
Publication date: July 1, 1988
By Eugene R. Hadfield
Abstract: The next time you're looking for a new or used mixer, consider how the capacity, parts, and service agreement meet your mixing needs.MIXING CAPACITYMixers range in mixing capacity from 4 to 16 cubic feet. Unfortunately, many manufacturers are not following the same procedure to rate the capacities of their units. It is virtually impossible for contractors to accurately compare mixers made by different manufacturers.DRUMCheck the steel thickness of both the drum shell and the drum end. Thick drums withstand more abuse and more wear than thin drums.PADDLESPaddles are available with neoprene or steel blades. The size and pitch of the paddles also are important.SHAFT BEARINGSPaddle shaft bearings probably require the most maintenance on a mortar mixer, next to the gasoline engine. Replacing them also is one of the most expensive repairs to have to make.SUSPENSIONIf you plan to tow your mixer, especially on interstate highways, check the axle carefully.ENGINEJobsite conditions determine which is better, a gasoline engine or electric motor.POWER TRANSFERThree types of power trains are available on mixers (from the least to the most expensive): open gear and belt drive; enclosed gearbox drive; or hydraulic drive.
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