The Complete Guide to Chain

6.1.3.1 Shape Features

  1. Side plates are straight.
  2. Because the radius of the side plate end is greater than half of the side plate height, the corner of the engaging side plate will rise slightly when the chain joint engages the sprocket. This may cause interference with objects conveyed directly on a chain equipped with an S-roller. (The roller diameter is less than the height of the side plate.)
  3. The end of the pin (opposite to the head of the pin) is equipped with a cotter hole for a T-pin. This arrangement allows easy assembly or disassembly of chain links.
  4. The pin has a swell neck at one end, and the cotter side can either be double flat or have a D-shape. Accordingly, side plates have full round pin holes, and D-shaped or double-flat pin holes.
  5. There are three types of rollers available: R, F, and S (M, N).
    The F-roller is a feature of large pitch conveyor chains, since they are useful in guiding the chain on the rail. However, the flange wears against the rail, and therefore, should only be used when the chain is lubricated, or when the conveyed material acts as a lubricant. Additionally, F-rollers should be avoided where heavy loads are conveyed, otherwise the flange may wear quickly or break. As a rule, S-rollers are used to reduce sprocket tooth wear due to smooth engagement with the sprocket, but are not suitable for rolling conveyance.
  6. R- and F-rollers have small-diameter hubs on their sides.
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