Instruction Manual

5
3. STIHL Harvester Saw Chain
A harvester chain is subjected to extremely high loads
during operation. The individual parts of the chain are
exposed to constantly alternating tensile forces which
can result in cracks and finally cause the chain to break.
The STIHL RAPID
™
Micro
™
Harvester (RMH) and STIHL
RAPID
™
Micro
™
Harvester Special (RMHS) have been
specifically developed to withstand the continuous high
loads imposed in highly mechanized timber harvesting
operations. All parts of the chain have been strengthened
to greatly minimize the risk of cracks, while maintaining
the same high cutting capacity.
STIHL harvester chains are designed for professional
applications under the toughest of operating conditions.
STIHL harvester chains are available in two versions:
STIHL RAPID
™
Micro
™
Harvester (RMH) and STIHL
RAPID
™
Micro
™
Harvester Special (RMHS).
STIHL RAPID
™
Micro
™
Harvester (RMH)
Cutters
Semi-chisel chain with slim, straight-sided cutter. The
narrow cutter shape reduces cutting resistance. Depth
gauge setting is 1.5 mm (0.059 in.).
Tie straps and drive links
The reinforced tie straps, drive links and rivets are rated
to take account of the high driving power of harvesters
and the resultant high loads imposed on the chain.
Reduced distance between tie straps increases flexural
strength and reduces the risk of chain breakage.
Identification
Each cutter is marked with "H" just below the depth
gauge.
STIHL RAPID
™
Micro
™
Harvester Special (RMHS)
Cutters
Semi-chisel chain with slim, straight-sided cutter. The
offset depth gauge makes this a smooth running chain.
As a result, the risk of chain breakage is greatly reduced
and service life is extended. Depth gauge setting is
1.0 mm (0.039 in.).
Sliding surface has been
increased by patented,
asymmetric shape of toe
and heel. This results in
considerably reduced
pressure on the cutters for
a longer wear life.
Identification
Each cutter is marked with "HS" just below the depth
gauge.