The REB-4 two-ram baler is the only two-ram that features Sierra’s patented dual-compression doors. The REB-4 uses 55 tons of force per door to push the material below the cutting knife and into the charging chamber, increasing charging efficiency, eliminating roll-back, and pre-densifying the material before the cycle even begins. Which leads to a 20 to 40 percent increase in production.
The REB-4 two-ram baler allows for greater input density in the charging chamber, which is dramatically different than traditional two-ram balers. When the doors are fully closed there is only a 6-inch gap that requires shearing, reducing the area to be cut by 90%, and allowing for an overall reduction of shear and hydraulic shock. As well as reducing stress on the blades and structure of the machine. This reduction in shearing also reduces energy cost, making the REB4 the most power-efficient two-ram in the world.
REB-4: sierraintl.com/equipment/reb-...
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