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DXB130H and DXB190H bring more muscle to Doosan hydraulic breaker line
Winter 2013
Doosan is expanding its excavator attachment offerings with two new hydraulic breakers. The Doosan DXB130H and DXB190H hydraulic breakers feature an energy recovery system that increases strike power for maximum productivity in a variety of demanding applications.
The nitrogen-powered breakers are equipped with an upper/lower suspension system that isolates the power unit from the housing. The energy recovery system captures the piston's rebound energy and uses it to increase strike power, maximizing performance. Blank-fire protection is standard on the DXB130H and DXB190H and is accomplished by using a cushion of oil at the base of the piston, which reduces the metal-to-metal contact in case of a blank fire situation.
Two-speed control: DXB190H
The DXB190H is engineered with Doosan's two-speed control, which also is available on the DXB260H breaker. With two speeds, the DXB190H breaker frequency can be manually adjusted between low and high frequency settings. This allows the operator to match the breaker impact rate to the working conditions for optimized productivity.
Match a tool to the project
Delivering up to 600 blows per minute, the 2,822-pound DXB130H is designed for use with excavators in the popular 15- and 22-metric-ton weight range. Rated in the 3,000 ft.-lb. impact energy class, the DXB130H requires a hydraulic flow rate of between 23.8 and 37 gallons per minute.
Delivering up to 360 blows per minute in its low frequency setting or 540 blows per minute in its high frequency setting, the 3,698-pound DXB190H is designed for use with excavators in the popular 21-to-31 metric-ton weight range. The DXB190H is rated in the 6,000 ft.-lb. impact energy class and offers a hydraulic flow rate of between 31.7 and 47.5 gallons per minute.
Protect and perform
The breakers' suspension system extends excavator workgroup life by absorbing harmful vibrations and stress waves. Also, a patented main valve design reduces hydraulic pressure peaks that can reduce pump life, crack excavator workgroup welds and cause system overheating.
The cradle-mounted grease station delivers continuous grease flow, reducing bushing and tool wear while minimizing maintenance costs and downtime. The DXB130H and DXB190H breakers also come with a mounting cap, auxiliary hydraulic hoses, two moil points, toolbox and a nitrogen checking device.
In addition to the general purpose moil, working tools available for Doosan's new breakers include a blunt tool, a chisel and a pyramidal or "nail" point. A one-year limited warranty is standard on these breakers.
