Tips of Maintenance of Pellet Mill Components

Roller Adjustment

Link to what are press roller in a pellet mill

Accurate roller adjustment is necessary for maximum capacity and long die and roller life. Loose roll adjustment will reduce capacity and cause choke-ups. Tight roll adjustment will result in rolled over dies and excessive roll wear. Die breakage can result because of poor roll setting.
In the heat treating process, a certain amount of distortion occurs which leaves high spots on the face of the die. Both rollers should be adjusted so that when the die is turning at a low RPM, the rolls should hit the high spot only. This type of adjustment prevents excessive metal-to-metal contact between the roller and the die but exerts sufficient pressure to maintain high capacity.
 
Die Care

Link to what is ring die in a pellet mill

By following a few simple rules your die life will be prolonged and you will realize the greatest production from your dies.
Never abuse a die by striking it with a hammer or by dropping it on a hard surface. If force is necessary to install the die, use a plastic hammer or piece of wood. The die is keyed to the quill and held in place by the die clamp. Care is necessary to have the surfaces of both the die and quill clean for proper mounting.
The die must be securely held by the die clamp at all times. A worn out die clamp or quill insert will make proper fit and operation impossible. A loose fit at this point will cause flexing and excessive stress on the die, rollers and drive train. The quill insert should be replaced if it becomes worn.
Magnets, sifters and other cleaning devices are vital to the life of a die - they are to be cleaned and checked regularly to make certain they are doing the job of removing metal and other material from feedstock. Periodic inspection of the die for presence of foreign material is advisable. Pieces of tramp metal which have become embedded in the die should be removed by punching or drilling from the outside end of the hole.
The care of die is similar to that of a rifle barrel bore. Die pores are carefully machined and highly polished. The hole surface must be preserved if maximum pellet capacity is to be maintained. If the mill is going to be shut down for over one half hour or for a die change, the die should be filled with an oily mixture.
When a die is removed from the pellet mill, store in a protected dry area. Also, when you receive a new die store it in this protected dry area to eliminate rust.
 
Removing the Die

Get to know the advantages of Kingman pellet mill on assembling or disassembling a die

1. Make certain the die has been filled with an oily mixture.
2. Back off cutting knives from die.
3. Open pellet chamber and remove feed cone.
4. Back rollers away from die.
5. Remove die clamp.
6. Remove die by drawing away from mill. If it does not come loose easily, pry in the slots between the die and the quill.
7. Store in a dry place.
NOTE: For a more detailed procedure for adjusting knives and rolls and removal of die and rolls, refer to manufacturer’s manual for your model pellet mill.