A third main part was added – the loading hopper, which alternates with the upper punch in a progressive-return motion and fills the matrix slot. This type of tablet machines with a resting matrix and a movable feed hopper by the type of mechanism driving the punches, was called eccentric, or crank. Scheme of crank tablet machine, which is a single-position press with a drive from the main crankshaft. Pressing is carried out by cooling the punch, die and shroud. The advantages of the pressing method are in the possibility of preventing the destruction of thermolabile drug substances, in the absence of sedimentation of the active substance and preventing its incompatibility with the molten base. The pressing method is used in the production of suppositories with cardiac glycosides, some thermolabile hormonal drugs and biogenic stimulants, as the process of preparation provides high accuracy of dosage and thermostability of drugs.

The filter baffle is located on the false bottom. The resulting sludge is washed, dried and discharged by means of an agitator through a hatch located on the side of the housing or in the center of the false bottom. In some designs, the sludge is removed after lowering the false bottom by moving the filter cloth belt, which passes through the regeneration chamber at the end of the sludge discharge. Druk filters are known, the body of which can be rotated by 90-180° in the trunnions fixed on its cylindrical part. Druk filters are used to separate medium and well-filtered suspensions in medium and low-tonnage productions.