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Service data
2
3
1
4
5
The technical data and part number
are etched by laser in the tail end of
every STIHL guide bar.
Key
– Chain pitch (1) (Rollomatic only)
– Part number (2)
– Cutting length (3)
– Groove width (4)
– Number of drive links (5)
4.1.1
Bar Tail
1
3
2
3
2
The tail of the bar is defined by the
position of the slot (1) for the
mounting studs, the position of the
oil inlet holes (2) and the fixing
holes (3) for the chain tensioner.
The necessary dimensions are
determined by the bar mounting
flange on the chainsaw for which
the bar is designed.
38
4.2
Basic Types and
Versions
4
STIHL guide bars are available in
two basic types:
– Duromatic
– Rollomatic
4.2.1
Duromatic E
Duromatic bars are made in a single
piece from a specially formulated
wear-resistant tool steel. The
contour is cut by laser while the bar
groove is ground in the blade body
in a special process.
"Duro" (from the Latin "durus"
meaning hard) denotes that these
guide bars are spring hard and
highly wear resistant. Their great
resilience makes them substantially
resistant to flexing stresses and
warping. The rails are induction
hardened and the highly stressed
bar nose area is stellite tipped in a
special laser welding process.
Applications
For very heavy-duty professional
felling and bucking operations on
high powered saws.
4.2.2
Duromatic C
Special version with a very narrow
profile and a very small nose radius.
Owing to the small nose radius, only
TM
STIHL 1/4" RAPID
Micro
Spezial chain may be used on
STIHL Duromatic C guide bars.
Duromatic C guide bars and 1/4"
TM
TM
RAPID
Micro
Spezial
The small nose radius of the
Duromatic C bars enables fine
details to be cut.
When working with the bar nose,
the tail of the long top plate (arrow)
on a standard chain causes the
cutting edge to be lifted out of the
cut. This increases the feed effort
required for boring and cutting with
the bar nose.
Chain and Bar Manual
TM
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