Rock grinders with fixed teeth for excavators having a weight between 2.5 and 70 t.

RC SERIES ROCK GRINDERS FOR EXCAVATORS
Technical features
- Heavy duty frame with pre-drilled holes to accommodate the pick up brackets. The positioning of the holes allows the grinder to be installed at 90°.
- Hydraulic system with on-board oil filters, compensating valve and check valve.
- Hydraulic piston motor with direct drive to the drums with self-lubricating system which, by re-circulating the hydraulic oil, does not require any ordinary maintenance.
- Anti-wear plates welded on the front part of the drum frame.
- Two high resistance drums with rock grinding teeth.
- Reduced spacing between the drums due to motor direct drive and compact design.
- Specially designed drum seals to avoid dust, mud and other debris from entering the motor compartment.
- The motor shaft does not support the weight of the drums; hence its longer life is assured.
- Safety cover which protects the motor in case of higher backpressures.
Compensating valve
- The compensating valve optimizes the hydraulic power according to the type of application.
Applications
Slow rotation drums (i.e.: 75-100 rpm) which operate mainly at high torque levels. The grinding head can be used in various modes.
From top to bottom
o mainly for fractured and/or brittle material
o the drum rotation follows the movement of the arm