GRAPPLES AND GRAPPLE SAWS
GRAPPLES AND GRAPPLE SAWS
This document provides guidance on selecting the appropriate grapple for professional forestry applications. It outlines the different series and variants of grapples produced by Cranab, optimized for use with forwarders, truck cranes, and chippers.
Grapple Series
- CR Series: Suitable for round timber.
- CE Series: Designed for wood fuel.
- CI Series: Ideal for handling single logs.
Grapple Variants
- HD Variant: More powerful, suitable for larger loads and tougher operations.
- X Variant: Features a claw design for better timber sorting and penetration.
- Grapple Saws: Compatible with most grapples, handling various timber dimensions.
Selection Criteria
The selection of a grapple depends on several factors, including the type of crane, its reach, and the type and length of timber. A table is provided to assist in choosing the right grapple based on these parameters.
Properties and Materials
- Grapples are designed to roll timber smoothly without catching.
- Claw tips are designed to avoid picking up soil and moss.
- High-tensile steel is used for durability, with expander pins ensuring longevity.
Technical Specifications
The document includes detailed technical data for various models, including maximum working pressure, weight, tip force, and maximum permitted load.
Grapple Saws
Specifications for grapple saws include weight, saw bar length, maximum cutting diameter, and load capacity. Features such as automatic chain tensioning and adjustable lubrication are highlighted.
Conclusion
Cranab has been developing grapples since the 1960s, focusing on providing optimal conditions for timber handling. The document emphasizes consulting with dealers for the best selection.
Catalog excerpts
GRAPPLES AND GRAPPLE SAWS FOR PROFESSIONAL FORESTRY Version 2, May 2015
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HOW TO CHOOSE THE RIGHT GRAPPLE Since the beginning of the 1960’s we have been developing grapples at the heart of Västerbotten county in a town called Vindeln. This is where our factories are located. Year in, year out, our operation has had a timeless, clear objective: to provide machine operators with the best possible conditions for collecting, moving and sorting timber. Our grapples have also been developed in line with us identifying new and better ways of providing operators with these conditions. After more than half a century, we are now proud to be able to tell you about the grapples...
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The X grapples give new meaning to the word versatility. They have been built to further improve the excellent properties of the standard grapples, with a claw tip that makes it easier to sort, pick and penetrate down between the stems when loading and unloading. The HD grapples are build for large cranes and heavy lifting. They have more material in the cradle and claws, larger journal diameters and solid bushings with seals. The GSK grapple saw cassettes are supplied for grapples ranging from the CR/CE250 up to the CR400 and with saw bar lengths ranging from 75–100 cm. Saw chain tensioning...
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TECHNICAL DATA We reserve the right to make amendments. Cranab* S Cranab AB SE-922 82 Vindeln, Sweden. Tel.: +46 933 135 00 [email protected] www.cranab.se
Open the catalog to page 4All Cranab AB catalogs and technical brochures
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