Recently the FR550X drilling rig reached a record pile depth in China of 143m (469ft) in the construction of The Jiaojiang Bridge, a large bridge in the Hang-Shao-Tai Railway system.
The FR550X rig has been greatly improved in performance, allowing for a maximum drilling diameter of 3.5m (11ft 6in) and the maximum drilling depth of 146m (469ft) (normal is 132m). The verticality of the hole is within 0.3%.
Designed for pile construction in large-scale projects, the FR550X is useful in large bridges, high-speed railways, highways, buildings, etc. For stability the FR550X has a H-type retractable crawler chassis with large diameter slew bearing for extraordinary stability and transportability.
The FR550X drilling rig utilizes a single-row 132m-long (433ft) wire rope main-winch system which supplies the 60t (132,277lb) of lifting force and greatly extends the service life of the wire rope compared to double layer winding.
The rotary head has two distinct operating modes; normal mode for soils, and rock drilling mode. Another feature is the autorotation which can adjust the rate of rotation continuously between the two modes.
In addition to the above points, here are more advantages of the FR550X:
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The main hydraulic system adopts a negative flow control, which improves system efficiency and maximizes engine power. The three-in-one hydraulic cooling system keeps the hydraulics working continuously.
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The US-Made Cummins turbocharged engine has plenty of power and complies with the Euro III emission standard.
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The luffing mechanism of the parallelogram ensures the stability while drilling large diameter and deep piles in hard formations.
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The centralized lubrication system provides convenient maintenance.
Technical specifications of the FR550X:
Rated Power
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447kW(2100r/min)
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600hp(2100r/min)
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Max. Output torque
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550kN.m
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405,600ft-lb
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Working pressure
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35Mpa
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5,076psi
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Max diameter
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3500mm
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11ft 6in
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Max depth
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146m
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479ft
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Working dimension
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12790mm×6000mm×33324mm
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42ft×19.7ft×109.3ft
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Transportation dimension
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18040mm×4550mm×3800mm
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59.2ft×14.9ft×12.5ft
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Overall weight (excluding drilling tools)
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180t
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396,830lb
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dimension
