Bucket Payload Estimate Calculator

How the bucket payload estimate calculator works

Filled volume per cycle = nominal bucket cubic metres × fill percentage / 100. Estimated material payload = filled volume × loose density in tonnes/m³. The fill factor is an entered assumption, and density must describe the material in its loaded loose state.

Productive cycles per elapsed hour = entered cycles per fully productive hour × productive share / 100. Hourly volume and mass are the per-cycle quantities multiplied by productive cycles. The productive share is applied once; avoid also embedding the same delay allowance in the entered cycle rate.

Amount above the entered comparison limit = max(estimated material payload − entered limit, 0). Zero bucket volume, fill or cycles produces the corresponding zero quantities. A percentage above 100% is allowed only as a modeled volume factor; it is not a loading instruction.

Estimated material mass is not a safe working load, lift rating or stability calculation. Attachments, machine configuration, terrain, operating technique and manufacturer limits require separate review. This tool cannot establish a permissible payload. Caterpillar’s productivity material supports the volume, cycle and utilization planning workflow.

Worked example

A 2 m³ bucket at 90% fill carries an estimated 1.8 m³. At 1.5 tonnes/m³ that is 2.7 tonnes. Forty cycles/h at 75% productive time gives 30 cycles, 54 m³/h and 81 tonnes/h. Against an entered 3-tonne comparison limit, excess is zero. Raising density to 2 tonnes/m³ gives 3.6 tonnes per cycle, 0.6 above that entered limit.

Sources and assumptions

The source material explains the underlying calculation or pricing structure. Entered prices, costs, schedules and scenario choices are your assumptions; this tool does not obtain supplier quotes or predict actual results.

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