8
Glossary of Common Terms
Glossary of
Common Terms
8-1
1/2 DUAL SPACING - One half the distance between the two center lines
of dualed wheels. The dimension is the same as the OUTSET dimension.
2-PIECE FLANGE NUT - A two-piece washer and nut combination used to secure
hub piloted wheels.
AIR CHAMBER - The space enclosed by a tire and wheel rim or inner tube.
BEAD SEAT - The area along the outer edges of the rim where the mounted tire
and rim are in contact.
BOLT CIRCLE - The circle defined by the centers of the bolt holes (stud holes)
of a wheel, dimensions stated in diameter inches or millimeters.
BOLT HOLE - Hole found in the disc of the wheel through which the bolt (stud) passes.
BORE - See “HUB BORE.”
CENTER BORE - See “HUB BORE.”
CONE LOCK CAP NUT - See “2-PIECE FLANGE NUT.”
DC - Abbreviation for drop center.
DISC AREA - The vertical wheel face which supports the rim.
DISC WHEEL - A one-piece (forged) or two-piece (welded) assembly of a disc and a rim.
DROP CENTER - The well or center portion of the wheel rim.
FLAT BASE WHEEL - A multi-piece wheel with a removable side ring.
FOOT-POUNDS - The measure of the amount of torque applied to a cap nut or other
part. May be measured with a torque wrench.
GUTTER FLANGE - A groove which supports the removable portion of a multi-piece
wheel.
HUB BORE - The center hole of a disc wheel, dimensions stated in diameter inches
or millimeters.
HUB PILOTED MOUNTING - A wheel mounting system which uses the hub to center
the wheel and two-piece flange nuts to secure it.
in. - Abbreviation for inches.
INNER CAP NUT - Cap nut used to mount the inner wheel in a dualed stud located
wheel system.
INSET - The distance from the wheel mounting surface to the rim centerline when
the centerline is placed inboard of the mounting surface.
kg - Abbreviation for kilogram (weight measurement), equal to 1000 grams.
kPa - Abbreviation for kilo Pascals (pressure measurement).
49
8
To Next Page
Loading...
Need help?
General
