McConnel SR460 - Rotation Definitions & Conventions

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1.4 Rotation Definitions & Conventions
This instruction manual refers to relative rotational directions. The terms clockwise and anti-clockwise are
defined by looking down at the machine from above, with the tractor being at the front; see Figure 1.10. To
eliminate confusion the following definitions will be used throughout this operator’s manual.
In order to create a consistent and quality cut and through-flow of material through and out of the machine,
SR460/620/820 machines have anti-clockwise and clockwise rotating rotors which are in turn fitted with left-hand
(LH) and right-hand (RH) blades. The rotation direction of each of the rotors is stated in Figure 1.8 for the SR460
and Figure 1.9 for the SR620/820.
SR
460
SR
620/820
Figure 1.8 Figure 1.9
(
620
mode
l illustrated)
Additionally, other references to ‘clockwise’ and ‘anti-clockwise’ actions by the operator conform to international
right-hand thread conventions for ‘screw down’ and ‘un-screw’ respectively.
This convention also extends to the definition of PTO drive rotation from the prime mover, see Figure 1.10.
Figure 1.10 – Tractor PTO Shaft Rotation Definitions