Crusher Throughput Calculator

Work out crusher throughput instantly with clear inputs, formula shown and shareable results.

About Crusher Throughput Calculator

Crusher capacity scales with the discharge opening: the mean of closed and open side settings times the chamber width gives the effective gap area, and material passes through it at a velocity set by the eccentric speed. Opening the closed side setting raises throughput but coarsens the product, shifting load to downstream stages.

Formulas

Crusher opening

Open side setting = closed side setting + eccentric throw; gap area = mean setting x chamber width

Throughput

Throughput = gap area x discharge velocity x bulk density x fill factor

Worked example

With the default values below, Crusher Throughput Calculator returns Crusher Throughput of 1,064.45. Change any input above and every figure here is recalculated in your browser.

Inputs used

Closed Side Settingminimum 0.01 mm: 150 mm
Eccentric Throwminimum 0.01 mm: 30 mm
Crusher Chamber Widthminimum 0.01 mm: 1,400 mm
Bulk Densityminimum 0.01 kg/m3: 1,600 kg/m3

Results

Crusher Throughput: 1,064.45
Open Side Setting: 180.0
Effective Discharge Area: 0.23100
Indicative Reduction Ratio: 5.333

Step by step

1Values used
2Crusher opening
3Throughput
4Crusher Throughput= 1,064.45
5Open Side Setting= 180.0
6Effective Discharge Area= 0.23100
7Indicative Reduction Ratio= 5.333

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 5 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why is closed side setting the key control?

It sets the product top size and therefore both throughput and the load passed to the next stage. Setting it is the primary lever in balancing a crushing circuit.

What is choke feeding?

Keeping the chamber full so rock crushes against rock rather than against the liners. It improves product shape, throughput and liner life, and is standard practice for cone crushers.