MacDon R113 - Definitions

214713 220 Revision A
11.8 Definitions
The following terms and acronyms may be used in this instruction:
Term
Definition
API American Petroleum Institute
APT Articulated Power Turn
ASTM American Society of Testing and Materials
Bolt
A headed and externally threaded fastener that is designed to be paired with a nut
Center-link
A hydraulic cylinder link between header and machine used to change header angle
CGVW Combined gross vehicle weight
Disc mower A machine that cuts and conditions hay and is pulled by an agricultural tractor
Export disc mower
Machine configuration typical outside North America
FFFT
Flats from finger tight
Finger tight
Finger tight is a reference position where sealing surfaces or components are
making contact with each other, and fitting has been tightened to a point where
fitting is no longer loose
GVW Gross vehicle weight
Hard joint
A joint made with use of a fastener where joining materials are highly
incompressible
Header or Rotary Header
The part of the disc mower that cuts and conditions the crop
Hex key
A tool of hexagonal cross-section used to drive bolts and screws that have a
hexagonal socket in head (internal-wrenching hexagon drive); also known as an
Allen key and various other synonyms
hp Horsepower
JIC
Joint Industrial Council: A standards body that developed standard sizing and shape
for original 37° flared fitting
n/a
Not applicable
North American disc
mower
Disc mower configuration typical in North America
NPT
National Pipe Thread: A style of fitting used for low-pressure port openings. Threads
on NPT fittings are uniquely tapered for an interference fit
Nut
An internally threaded fastener that is designed to be paired with a bolt
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
PTO Power take-off
RoHS (Reduction of
Hazardous Substances)
A directive by the European Union to restrict use of certain hazardous substances
(such as hexavalent chromium used in some yellow zinc platings)
rpm
Revolutions per minute
REFERENCE