The Complete Guide to Chain

4.2.1 Check of Conditions for Selection

You should check the items shown below:

  1. Application conditions: application environment, indoor or outdoor, temperature, existence of foreign objects.
  2. Conveyed objects: type (unit materials, bulk materials), abrasive, corrosive, temperature (high or low), dimension (for unit material), weight (unit material kg/unit; bulk material kg/m3).
  3. Maximum conveyance volume (unit materials, kg/conveyor length; bulk materials, tons/hour).
  4. Method of conveyance: pushing with dog attachments, conveyed objects placed directly on the chains, etc.
  5. Length of the conveyor, shaft center distance, vertical rise, general layout.
  6. The chain speed (m/min.).
  7. Number of the chain strands, interval length.
  8. The chain pitch, attachment spacing and type.
  9. The number of sprocket teeth, or pitch diameter.
  10. Working hours (hours/day, hours/year).
  11. Lubrication.
  12. Motor: AC or DC, kW × number of motors.
  13. Noise: If there is any noise constraint, use a larger number of sprocket teeth. Consult the manufacturer.

Some Additional Thoughts

You can make your decision on point 4 after reviewing the points in Basics Section 4.2.2, Conveyor Type Selection. Make sure to follow the procedure carefully.

Point 7 is more difficult to determine than it looks; the materials being conveyed impact the decision. Because the chain sizes and configuration may change as the design is developed, you must consider this point carefully. Consider these examples:

Points 8, 9, and 12 may be revised as you proceed with the selection process since the chain sizes are usually determined by roller load, so make a preliminary selection first.