Charger™ RR440

Charger™ RR440 is a sealed journal-bearing blasthole bit designed for surface mining with up to 169% longer lifetime and a lower cost per meter than standard air bits.

Features

Increased productivity

The patented QX2 bearing uses “dual seal” technology combined with Phinodal bearing sleeves to significantly increase weight and rotation speed capacities. Kevlar™ coated excluder seal protects the primary seal from cuttings and debris, making this system virtually bulletproof.
Optimal design

This rotary bit features advanced cutting structures for superior wear, an asymmetrical leg to aid flushing while maximizing hole wall clearance, full leg protection for maximum bit life and an extended backflow valve to limit water and cuttings to the bit internals.
Economical maintenance

The QX2 bearing allows drillers to apply more weight, drill faster and lower drilling costs. Fewer bit changes and less manual handling mean cost-effective maintenance.

Product specifications

Bearing type: Sealed journal bearing
Cutting structure: QX2 series
Bit sizes: 200.00 - 311.00 mm (7.67 - 12.24 ) in.
PowerCarbide®: Optional SH75 grades
Bit weight: 35.000 - 98.000 kg (77.000 - 216.000 lb)

Charger RR440 rotary drill bit side white background

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