BELTPRO

Spiral Cage Load & ANSI Chain Sizing

Estimate spiral cage load, cage torque and chain pull, then obtain a preliminary ANSI simplex roller-chain suggestion.

Back to Engineering Calculators

Calculation inputs

Spiral system data

Enter the combined belt and product mass per unit length.

Chain-drive data

Use pitch diameter, not outside diameter.

Engineering results

Enter the system data and run the calculation.
Suggested ANSI simplex roller chain——
Outside-edge radius, Rₛ—
Total distributed weight, Wₜ—
Cage load, P꜀—
Cage torque, M꜀—
Theoretical chain pull, Pᴅ—
Design chain pull—
Reference allowable load—
Chain utilisation—

Important engineering notes

  • This calculator is restricted to ANSI simplex roller chains.
  • Chain selection must use one consistent manufacturer's allowable working-load data, not minimum tensile strength.
  • The driven sprocket input must be its pitch diameter.
  • Low temperatures, corrosion, lubrication, alignment, starts and shock loading may require additional manufacturer derating.
  • The result is preliminary and must be verified against the selected chain manufacturer's current catalogue.