#8 Darda Rock Splitter

Some Demolition Applications Include:

Bridge Decks	Bridge Abutments	Retaining Walls	Concrete Walls	Floor Slabs	Reinforced Concrete
Foundations	Wall Openings	Brick and Rock Walls	Culverts	Locks	Dams
Road Barriers	Underwater Demolition	Sidewalks	Curbs	Most Types of Rock	Machine Blocks

• Breaks Reinforced Concrete
• Breaks All Types of Rock
• No Shock or Vibrations
• Over 700,000 lbs. of Breaking Force
• Controls Direction of Break
• Safe
• One Man Operation
• More Production Than Paving Breakers

   

Work crew uses two hydraulic splitters with breaking force of 770 tons to cut two feet off of top of bridge piers.  Split was made in less than two minutes along the drill hole line.  No impact cracks were left in the remaining lower section to be saved.	A backhoe quickly topples two ton section off pier top in a few seconds.  A new top will be placed on the remaining section to widen the highway from 4 to 6 lanes.  Hydraulic splitting method speeds up demolition and reduces costs.
*Three hydraulic splitters powered by a single pump generate over 2 million lbs. (1155 tons) of breaking force to split a 8 ft. xc 22 ft. block of granite cap rock in a Midwest quarry.  The Elco pump, with manifold, can power 4 splitters if more force is required.	Using two hydraulic splitters, this 8 ft. to 12 ft. thick concrete wall was broken into pieces and removed by a 988 Cat.  The contractor speeded up demolition work on this 800 ft. wall many times over other breaking methods.

Impact Breaking	Hydraulic Splitting
Paving breakers and large mounted impact rams are limited to breaking rock or concrete in small pieces.  Noisy impact demolition requires more energy, time and is usually more expensive.	Pieces, as large as your equipment can handle, are broken in seconds for removal.  The larger pieces can increase production and reduce costs.  The method is quiet and direction of breaks can be controlled.

Controlled Demolition for Infrastructure Work

    Many contractors find they can reduce costs, save time and make demolition work profitable using the hydraulic splitting method.  Hydraulic splitting means controlled demolition.  As the direction of breaks can be determined, concrete can be cut in sections as large as your equipment can handle.  Hydraulic splitting eliminates both shocks and vibrations associated with large impact tools.  Engineered for heavy duty work, hydraulic splitters will out perform even large mounted impact machines.  It can break large pieces of concrete or rock many times faster than paving breakers.  Years of research and the use of hydraulic splitting on hundreds of job sites has proved this new method to be one of the most practical tools for demolition of concrete and rock.  With a hydraulic splitter, the operator now has a very powerful tool at his command.  With little effort, he can control the demolition as the job requires.  The applications for the splitter are many, such as bridge decks, abutments, retaining walls, concrete walls, floor slabs, foundations, wall openings, reinforced concrete, rock and brick walls, locks, dams, culverts, road barriers and underwater demolition of concrete and rock.

How Splitter Works          The hydraulic splitter is powered by a 10,000 P.S.I. pump.  The cylinder contains a control valve and a piston that moves the plug between the two feathers forcing them against the wall of the hole.  When the tension increases beyond the tensile strength of the material, a split will occur.  The entire operation of the cylinder is controlled by a single lever on top of the tool.  The plug can be advanced and retracted with this lever.  An automatic built-in valve reduces pressure after break.       *Two or more hydraulic splitters can be operated at one time increasing the breaking.  Example, two cylinders produce 1,400,000 lbs. of breaking force.  Up to four splitters can be operated with one pump.

A hydraulic splitter was used to remove ends of overpass supports to form a keyway.  The concrete was separated wide enough to cut reinforcing rods using enlarging feathers.	A workman carries splitter used to cut 14 ft. tunnel through base of dam for new penstock.	Trench rock and boulders below grade can be broken with one or more hydraulic splitters.  Hydraulic splitting eliminates dangers associated with blasting.  These hydraulic splitters will also operate underwater without any modifications.

Darda Splitter #8 Specifications
Model	#8S
Weight	82 lbs.
Overall Length	54-1/2"
Maximum Expansion	.75" - 1.87"
Size Hole Required	1-3/4"
Minimum Hole Depth	26"
Maximum Splitting Force	350 Tons
The No. 8S cylinder, the largest and most powerful, is recommended for heavy duty jobs and reinforced concrete.  The 8S operates up to 7100 P.S.I.  A complete unit consists of a cylinder, 30 ft. high and low pressure hoses, high and low pressure whips, quick connect couplings, hydraulic pump and lubricant.

Elco Pump Specifications
Model	Air 02
Weight	70 lbs.
Height	19-1/4"
Width	18"
Depth	12-1/2"
Oil Capacity	5 Gal.
Motor	Air Motor requires 50-80 cfm at 100 P.S.I.

Accessories

• Enlarging Feathers to Extend Cracks
• Lubricant Packed in 1/2 and 1 Pint Cans to Lubricate Plug and Feathers
• Flow Bar to Run Extra Splitters Off One Pump
• Pressure Gauge to Check Pump Output and All Components 

WARNING:

Use of other lubricants can damage the cylinder seals due to increased friction of plug and feathers. An inferior lubricant can shorten life of the splitter. A substitute can greatly reduce the splitting force of the tool caused by an early bypass before a break is made. Substitutes can damage tool and void warranty!

• Elco Lube reduces friction and wear
• Elco Lube resists water
• Elco Lube extends life of the Hydraulic Splitter
• Elco Lube prevents surfaces from freezing together
• Elco Lube prevents damage to cylinder seals
• Elco Lube operates Splitter at peak efficiency
• Elco Lube has been formulated and tested to use with the Hydraulic Splitter plug and feathers and will withstand the hundreds of tons of pressure generated on their sliding surfaces.

Follow These 3 Steps to Get Maximum Production

1.  Have You Drilled the Correct Hole Size?
    A hole too large reduces the breaking force of the splitter.



2.  Have You Drilled the Hole Deep Enough?
    Short holes break costly plugs!



3.  Have You Lubricated the Plug?
    Use Elco Lube after 2 breaks.  Elco Lube operates tool at full power.

    No lube causes:

• Tool Stuck in Hole
• Freeze Parts Together
• Won't Make a Break    

*see manual for more details

Warning:

• When tool is working keep an arm's length away from cylinder due to possible sudden movement when break occurs.
• When tool is used off the ground or overhead, the cylinder should be supported so it does not fall after break is made.
• Do not use cylinder as lever or pry bar.
• Do not stand on any part or section that could move or fall when split.