MacDon M2170NT, Руководство оператора, Страница: 52 / 558

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Revision A
Table 2.1 Definitions (continued)
Term Definition
ORB
O-ring boss: A style of fitting commonly used in port openings on manifolds, pumps,
and motors
ORFS
O-ring face seal: A style of fitting commonly used for connecting hoses and tubes. This
style of fitting is also commonly called ORS, which stands for O-Ring Seal
PARK
The slot opposite the NEUTRAL position on operator
’
s console of M1 and M2 Series
Windrowers
rpm
Revolutions per minute
SAE
Society of Automotive Engineers
SCR
Selective catalytic reduction
Screw
A headed and externally threaded fastener that threads into preformed threads or forms
its own thread when it is inserted into a mating part.
spm
Strokes per minute
Tension
An axial load placed on a bolt or screw, usually measured in Newtons (N) or pounds (lb.).
This term can also be used to describe the force a belt exerts on a pulley or sprocket
TFFT Turns from finger tight
Timed (knife drive)
Synchronized motion applied at cutterbar to two separately driven knives from a single
hydraulic motor
Torque
The product of a force * the length of a lever arm, usually measured in Newton-meters
(Nm), foot-pounds (lbf
∙
ft), or inch-pounds (lbf
∙
in)
Torque angle
A tightening procedure in which a fitting is assembled to a specified tightness (usually
finger tight) and then the nut is turned farther by a specified number of degrees until it
achieves its final position
Torque-tension
The relationship between the assembly torque applied to a piece of hardware and the
axial load it induces in a bolt or screw
ULSD
Ultra-low sulphur diesel
Untimed (knife drive)
Unsynchronized motion applied at the cutterbar to two separately driven knives from a
single hydraulic motor or from two hydraulic motors
Washer
A thin cylinder with a hole or a slot located in the center, used as a spacer, a load
distribution element, or a locking mechanism
Windrower
The power unit for a header
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