MacDon D65 Operator's Manual page 38

Term
NPT
ORB
ORFS
PTO
RoHS (Reduction of
Hazardous Substances)
SAE
Screw
SDD
Self-Propelled (SP)
Windrower
SK
SKD
Soft joint
spm
SR
Tractor
Truck
Timed knife drive
Tension
TFFT
Torque
Torque angle
Torque-tension
UCA
Untimed knife drive
Washer
Windrower
169899
REFERENCE
Definition
National Pipe Thread: a style of fitting used for low pressure port openings. Threads
on NPT fittings are uniquely tapered for an interference fit
O-ring boss: a style of fitting commonly used in port opening on manifolds, pumps
and motors
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
Power Take-Off
A directive by the European Union to restrict the use of certain hazardous
substances (such as hexavalent chromium used in some yellow zinc platings)
Society of Automotive Engineers
A headed and externally threaded fastener that threads into preformed threads or
forms its own thread in one of the mating parts
Single-draper drive
Self-propelled machine consisting of a power unit with a header
Single knife
Single-knife drive
A joint made with the use of a fastener where the joining materials are compressible
or experience relaxation over a period of time
Strokes per minute
Single reel
Agricultural type tractor
A four-wheel highway/road vehicle weighing no less than 7500 lbs (3400 kg)
Synchronized motion applied at the cutterbar to two separately driven knives from a
single hydraulic motor
Axial load placed on a bolt or screw, usually measured in pounds (lb) or Newtons (N)
Turns from finger tight
The product of a force X lever arm length, usually measured in foot-pounds (ft·lbf)
or Newton-meters (N·m)
A tightening procedure where the fitting is assembled to a precondition (finger
tight) and then the nut is turned further a number of degrees or a number of flats to
achieve its final position
The relationship between the assembly torque applied to a piece of hardware and
the axial load it induces in the bolt or screw
Upper cross auger
Unsynchronized motion applied at the cutterbar to two separately driven knives
from a single hydraulic motor or two hydraulic motors
A thin cylinder with a hole or slot located in the center and is to be used as a spacer,
load distribution element, or a locking mechanism
Power unit of a self-propelled header
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Revision A