4 Fundamentals of Reel Mowers
TORO Service Training
Theory of Operation
There are three main structural members in a
reel cutting unit:
The REEL consists of varying numbers of helix
shaped blades attached to support spiders
which are mounted on a rotating shaft.
The BEDKNIFE is attached to the bedbar and
the assembly is mounted to the main frame in
a manner that allows for paralleling and
adjustment to the reel.
The FRAME supports the rollers, the bedbar
assembly and reel with it’s drive mechanism,
which can be hydraulic, belt driven or ground
driven.
A reel mower cuts grass with a scissors-like
shearing action as the moving helix shaped
blades pass over the stationary bedknife. The
cutting action requires that the bedknife and
reel blades be sharp, matched, and in close
relationship with each other.
When properly maintained and operated, reel
mowers provide superior quality of cut. It
cannot be overstated that reel mowers are
precision tools. It is essential that they be
adjusted and operated with this in mind.
Reel Mower Clip
To understand reel cutting theory, you must understand the concept of clip and the shear point. A shear
point is any single point of contact made between the reel blade and bedknife.
Clip is the forward distance traveled between
successive blade contacts at one shear point.
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