Grabs and Chisels for Fully Cased, Bored Shaft Excavation
As experts in deep foundation equipment, LEFFER offers a broad selection of grabs for crane excavation of fully cased, bored shafts. To penetrate hard soil, rocks or boulders, a selection of free-fall rock chisels are available. Regardless of the soil conditions, size or depth of drilling/excavation involved, vertical accuracy requirements, preference for cable/hydraulic actuation -LEFFER has a universal or specialized grab for the job.
|LEFFER Series||Grab Type||Application|
|L Series||Hammer Grab – Scissors Type||Pile construction of fully/partially cased bores/drilled shafts|
|L SK, SZ, RK, RZ Series||Special Hammer Grab – Pulley Type|
|LKG Series||Spherical Grab|
|HKLG/ HKLG CD Series||Hydraulic Spherical Grab|
Hammer Grab-Scissor Type
LEFFER Scissors Type hammer grabs are ideal for the drilling/excavation of fully cased pilings in most soil conditions. With 18 different models available, there is a LEFFER hammer grab sized for all except the largest of pile boring applications. The smallest of LEFFER hammer grabs, the L370,drills pilings with casing diameters from 390-470 mm and has a jaw/crown capacity of 9/26 Liters. The largest LEFFER hammer grab, the L1840, drills pilings with casing diameters from 1910-2000mm and has a jaw/crown capacity of 1000/520 Liters.
The LEFFER Scissors Type hammer grab is one of the most important tools used in pile construction, and its performance often determines the overall rate of drilling progress. LEFFER BG Series Hammer Grabs incorporate the best elements of several different hammer grab designs, along with patented design features, to deliver versatility and performance unmatched by other conventional hammer grabs. LEFFER Scissors Type hammer grabs can be used for pile boring in practically all different soil types- including cohesive soils and saturated soils. This versatility delivers value and economy by replacing several tools for different soil conditions with a single tool that can handle it all.
Hammer Grab Features and Benefits
|Design suitable for practically all different soil types, including those with groundwater||Versatility. Economy|
|Choice of recommended double rope or optional singe rope operation*||Quick, reliable, and economical operation in either mode. Flexibility|
|Design excludes wear prone cable pulleys||Less maintenance|
|Closing force is produced by a scissor system||Wear and dirt do not degrade performance|
|Design excludes a closing cable for the grab||No need for frequent replacement|
|Spring assisted jaw opening||Adhesive soils are dumped more easily due to the forceful impact of opening the jaws|
|Streamlined grab body||High fall velocity under water|
|Additional side pockets on lower section of grab||Increased filling capacity in soft soils|
|High strength, stress relieved construction||Increased durability. Extended service life.|
*Single rope operation requires a grab cover with latches and a simple chandelier
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Chisels Are Used To Drive Casing Through Rock.
Champion Equipment Sales, LLC 8140 East Rosecrans Ave. Paramount, CA 90723 562.634.8180