The Model 68 Laboratory Length Grader is a basic one cylinder machine which is designed to work in the laboratory room and make separations by length only, such as removing broken from whole kernel grain. The cylinder shells provide flexibility to meet a wide range of separation requirements either in a single pass or in a multiple pass. A variety of indent cylinder sizes combined with control flexibility allows the processing of many types of products.
The Model 68 relies on centrifugal force. the shorter material is always lifted by indent pockets that line the inside surface of the cylinder. The operator controls the separation by adjusting the position of the separating edge of the catcher, into which the product falls. The speed of the cylinder holds the particle in the indent, lifting it out of the mass until the indent is inverted to the point where gravity causes the particle to fall out of the indent.
The particle dropping from the indent falls into the catcher. The angle of the catcher can be adjusted to obtain the desired “Cut point” There by catching the small particles as they drop out of the indents but not permitting the longer particles to ride up the rising side of the cylinder and fall into the catcher.
To make adjustment on the “cut point” (or point of separating edge), a catcher tilt adjustment control is used which enables you to define the degree of separation that is required.
The unit comes with a variable speed control as well as a timer. The rotation speed of the cylinder may be changed by the external speed adjustment rotary control, which changes the motor output speed to the gear reducer which changed the speed of the cylinder.
SELECT CYLINDER SIZE