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Plate Feeder Classification

The current range of MMD Heavy Duty Apron Plate Feeders are classified from D4 to D11, with various widths and lengths available.

 


Below are the characteristics of an MMD feeder, which identify its design:

 

Chains and Rollers

Chains and Rollers

The main designation of a feeder are the heavy duty chains and rollers which are attached to the main frame. These chains and rollers will vary in size depending on the application and stresses they will be put under. Chains and rollers are manufactured by caterpillar and designated as D4, D7, D9 and D11 chains and rollers. The higher the 'D' number, the greater the intensity of the work load. Subsequently a feeder is initially categorised as a D4, D7, D9 or D11 plate feeder.

   

Plate Width

 

Plate Width

The Apron Plates, which are fixed to the chain, are made from specially rolled sections. They are manufactured in various widths to cater for the maximum volume of material which may need to be processed. The standard widths that are available are 1500, 2000, 3000 and 4000 mm.

   

Feeder Length

Feeder Length

The feeder length is measured from the centre-line of the tail sprocket to the centre-line of the head sprocket. This is a distance of how far materials need to travel to reach the designated point from the loading area.

   
   

Drive

Drive

 

Drive

The drive, located at the head sprocket, is generally a variable speed unit because it is often the main method of controlling the throughput of the plant. There are two types of variable speed drive available, electromechanical and hydraulic, depending on the source of energy.

   

Fines Retrieval System

Fines Retrieval System

An optional extra is the fines retrieval system. This is positioned underneath the feeder to prevent fine material from spilling underneath the feeder.
 

 

 

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