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Concrete and rocks beware — new Doosan breakers are ready for action!

Winter 2012

Two new concrete-busting, rock-crushing hydraulic breakers are available from Doosan. The new DXB100H and DXB260H hydraulic breakers — complementing the DXB170H — are approved for use with Doosan crawler excavators.

Two-speed control — DXB260H
One of the most impressive features of the new DXB260H breaker is the two-speed control. The breaker frequency can be easily adjusted between short and long stroke settings. This allows the operator to match the breaker frequency to ground conditions for optimized productivity.

Breaker features
There are five key features of the new hydraulic breakers. They include a cradle-mounted grease station, energy recovery system, new valve system, high-quality piston and cylinder, and blank-fire protection.

A cradle-mounted grease station comes standard for the DBX260H to deliver continuous grease flow, reducing bushing and tool wear. This minimizes maintenance costs and downtime. Additionally, premature wear is prevented with blank-fire protection, using a cushion of oil on the base of the piston. For further peace of mind, Doosan stands behind its breaker quality with a one-year limited warranty.

For maximum performance, an energy recovery system captures the piston's rebound energy and uses it to increase strike power. At the same time, the main control valve system optimizes strike power. Both the piston and the cylinder are designed for efficiency, with minimal tolerances to reduce internal.

Third model: DXB170H
For excavators between 18 and 28 tons, Doosan offers customers the DXB170H. It is approved for use with Doosan DX225LC, DX235LCR and DX225LC excavators.

For more information about Doosan hydraulic breakers, visit www.DoosanEquipment.com or contact your local Doosan dealer.

DBX100H Specs
Carrier weight: 10 - 15 tons
Approved Doosan carriers: DX140LC
Operating weight: 2061 lb. (935 kg)
Tool diameter: 4.21 in. (107 mm)
Operating pressure: 2466 psi (170 bar)
Flow: 18.5 gpm (70 L/m) min; 31.7 gpm (120 L/m)
Frequency: 750 bpm
Impact energy class: 2000 ft-lb. 

DXB260H Specs
Carrier weight: 28 - 37 tons
Approved Doosan carriers: DX300LC and DX350LC
Operating weight: 5400 lb. (2450 kg)
Tool diameter: 6.14 in. (156 mm)
Operating pressure: 2610 psi (180 bar)
Flow: 39.5 gpm (150 L/m) min; 66 gpm (250 L/m) max
Frequency: 520 bpm
Impact energy class: 8000 ft-lb.