Carlton A1EP-GL, Инструкция по техническому обслуживанию и безопасности

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28
Carlton
®
Maintenance and Safety Manual
Guide Bar Types
Guide bars are intended to serve as their name implies; to guide
the saw chain. Guide bars are
never
to be used as a pry bar,
anvil or felling wedge.
As with saw chain, many common guide bar complaints are a
result of poor or improper maintenance.
Solid nose guide bars – professional use
Solid nose guide bars are made from a single piece of steel with
hard facing materials welded to the nose area. Solid nose guide
bars are not intended to be used in an application that requires
a lot of bore-cutting or extensive cutting with the nose portion
of the guide bar. Solid nose guide bars are best in gritty cutting
conditions, such as cutting up fallen trees, as they have no
bearing in the tip. They are more expensive to replace, so avoid
using them where the tip of the guide bar is used extensively.
Sprocket nose guide bars – professional use
Sprocket nose guide bars are designed for the very applications
where the nose portion of the guide bar is used in cutting. These
guide bars have a series of needle bearings inside a sprocket,
laminated at the tip. In bore-cutting, this bearing assembly
takes the friction from the saw chain away from the body of
the guide bar. Sprocket nose guide bars enable the user to
replace just the sprocket nose, rather than the entire guide bar.
Sprocket nose guide bars are the best for all-around cutting.
Laminated sprocket nose guide bars – consumer use
These guide bars are made from three layers of steel assembled
and spot welded. Laminated guide bars are usually the most
economical option, and are a great choice for occasional and
semi-professional use.