This selection guide and review of the smallest mixers discusses conventional, hand-held, mini vertical-shaft, and revolving drum mortar mixers. Small mechanical mixers can be a good choice for repair and restoration projects, where you need only small amounts of mortar at any one time, and for large sites, where the work is spread out and it's more efficient to spot mixers at several locations.A concrete mixer is less than ideal for mixing mortar, but you'll find only a limited selection in small mortar mixers. You should consider the BatchMaker from the W.R. Bonsal Co., Charlotte, N.C., or two vertical shaft mixers from Imer U.S.A., South San Francisco, Calif.The article compares nine smaller mortar mixers on capacity, dimension, and weight.Some things to look at when selecting a mortar mixer are:
  • Mixer type
  • Capacity
  • Power
  • Power transfer
  • Blades
  • Drums
  • Drum seals and mixing shaftbearings
  • Maintenance
  • Mobility
  • Safety features
  • Efficiency
  • Warranty

The article also lists maintenance and inspection requirements for the engine, motor, drive train, shaft bearings, grid, seals, paddles, blades, wheels, and tow bar.