Service Manual
4
Small Rock Valve
Friction
Friction
Friction and
stone crushing
Friction and
stone crushing
max 1.5mm
0.590"
Cutting Ring
max 1.5mm
0.590"
Cutting Ring
Housing Lining
Housing Lining
Lengthening the Service Life of
the Spectacle Plate and Cutting
Ring
Conditioned by outside influences (material
variations), as well as by differing work strains
on partial sections, the cutting ring and the
housing lining wear out unequally.
The grooves resulting from operation are
irrelevant as long as the armouring is not worn
out completely.
Spectacle or Inlet Plate
Cutting Ring
To ensure uniform wear and, thus,
considerably
longer service lives
, we recommend the
following:
1. Move the Rock Valve to the left and right
end position once a week after thorough
cleaning, and check the condition of both the
Cutting Ring and the Housing Lining.
2. Turn the Cutting Ring 90 degrees when there
is a clearance greater than 1.5mm-2.0mm
(.0590”-.0590”) between the Cutting Ring
and the Housing Lining. The Cutting Ring
typically wears at the 3 and 9 o’clock posi-
tion. Turning the Cutting Ring 90° will
ensure uniform wear and lengthen the ser-
vice life.
Summary of Contents for SP ROCK
Page 2: ......
