Astec BreakerBOSS

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Astec has Sixteen brands, and thousands of Innovative products, proven by a century of work. With unmatched strength from Rock to Road. They were founded on innovation and a passion to help customers succeed. It’s this commitment that has driven their decision to unify as one company.


For over fifty years, Astec has focused on developing innovative machines built for strenuous environments — and nothing is more demanding than underground mechanical scaling. The BreakerBOSS 3D and 3DE models provide the reliability and enhanced safety you need underground.

Astec - BreakerBOSS

Exceptional Coverage,
Compact Package

The BreakerBOSS series is for a new generation of mining productivity and safety. Its five-axis boom offers enhanced flexibility and superior coverage where other scalers fail. The heavy-duty, compact construction makes it easy to maneuver while withstanding extreme conditions. The ergonomic, ROPS/FOPS-certified operator cabin and HVAC system maintain excellent personnel safety while providing high visibility and comfort.

Astec BBOSS Diagram Side View
Astec BBOSS Diagram Top View


-Heavy-duty compact construction
-Boom coverage provides full scaling within a 4-meter advance from one setup; no repositioning is required
-Optimal for headings 3-5 meters
-Five-axis boom for excellent maneuverability
-Deutz diesel engine
-Spherical roller bearing articulation joint designed for long life
-Closed-loop hydraulic wheel drive (HWD) with separate reservoir, four-wheel drive, and traction control
-Spring applied hydraulic release (SAHR) parking/emergency brake in each hydraulic wheel motor
-Closed-loop hydraulic wheel end service brakes via pump-over-center swash plate
-Heavy-duty mining tires
-Load-sensing hydraulic circuit for boom and steering functions
-Dedicated open-center hydraulic circuit for breaker fire function
-24Vdc/100 amp electrical circuit with CANBus-based system, proportional electro-hydraulic control, and touch-screen human interface
-Ergonomic ROPS/FOPS-certified operator cabin with excellent visibility and operator comfort, complete with HVAC
-Heavy-duty fabricated boom structures with versatile feed, robust slew bearing, and dual rotary actuators for optimized coverage
-BX10SB (1,000ft-lb class) scaling breaker

BXR50C Hydraulic Breaker

Impact Energy5,000 ft-lbs6,780 J
Impact Rate440 – 810 bpm
Hydraulic Pressure2,700 psi186 bar
Oil Flow42-53 gpm160-200 lpm

BXR65C Hydraulic Breaker

Impact Energy6,500 ft-lbs8,810 J
Impact Rate400 – 800 bpm
Hydraulic Pressure2,700 psi186 bar
Oil Flow46-58 gpm175-220 lpm


Weight55,891lb25,352 kg
Height9’ 3”2.8 m
Width8’ 8”2.6 m
Length34’10.3 m
Inside Turning Radius11’ 2”6.36 m
Outside Turning Radius20’ 11”15.21m
1st Gear4.8 mph7.7 kph
2nd Gear7 mph11.2 kph
3rd Gear13.2 mph21 kph