• 1. Smoother chain operation can be expected as the number of sprocket teeth increases. This means that for a sprocket with the same outer diameter, a shorter pitch chain can operate more smoothly due to less articulating angle of chain on the sprocket. This also results in less wear between pin and bush and thus longer chain life.
• 2. Longer pitch chain, though more expensive per link, would be cheaper for a unit length of chain in general. Chain pitch for Unit Conveyors is determined by unit size or attachment spacing.
  [ex. ]Attachment spacing = 2m• Chain pitch = 100, 200, 250• Chain pitch can be selected by dividing attachment spacing by an even number.
• 3. The chain pitch for Bulk Conveyors is determined not only by material itself, but also by conveyor capacity. Conveyor capacity is determined by sizes of bucket, apron, scraper, etc. Chain pitch is in turn determined by these sizes.
• 4. Space limitations may determine sprocket pitch circle diameter and consequently determine chain pitch.
  ×

  (Drag to move. )

  Diameter of the circle circumscribing the tooth profile pitch of the sprocket.
  (JIS B 1812:2015)

  
• 5. Chain pitch relates to the number of sprocket teeth and chain speed shown in Table 2. Chain speed should be less than the allowable value.

Table 2. Chain Pitch and Allowable Chain Speed

Note) When mounting large jigs on the chain, for example, for a bucket elevator, take into account past experience and provide a sufficient margin for allowable speed with regard to the number of sprocket teeth.