Mining & Quarrying · 30–36 t crawler excavator

Secondary Breaking in a Granite Quarry

Oversize granite blocks after blasting were slowing the primary crusher. A 40G-class open breaker on a 36 t excavator reduces boulders at the muck pile so haul trucks feed the crusher continuously.

Hydraulic breaker on an excavator reducing oversize rock in a quarry

The challenge

After each blast a share of the rock is too large for the crusher opening. Re-blasting is slow, needs permits and stops traffic, while drop-ball methods are imprecise and unsafe near equipment.

Our solution

  • Heavy open-type breaker in the 40G class (160 mm chisel) matched to the carrier’s 200+ L/min auxiliary flow.
  • Bracket and pins machined to the existing hydraulic quick coupler so the excavator can swap back to a bucket for loading.
  • Blunt chisels for brittle granite and a spare power-cell seal kit kept on site.
  • Remote video commissioning: flow and pressure checked with the operator before first shift.

Results on site

  • No secondary blasting required for oversize
  • Crusher fed continuously from the muck pile
  • One machine for breaking and loading via quick coupler

Configuration

Carrier36 t excavator
Breaker class40G, 160 mm chisel
Flow / pressure180–240 L/min · 170–200 bar
CouplerHydraulic, double lock

Attachments used

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Tell us your machine. We’ll match the attachment.

Send the carrier model, auxiliary oil flow and what you need to break, grab, cut or drill. You’ll get a matched model, drawing and price within one working day.

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