GATES
Glossary
Oil and Heat Resistance (OHR) —
Property
of the belt that allows it to withstand the
effects of oil, heat, sunlight, ozone, weather
and aging.
Outside Circumference (O.C.) —
The circumference (total length) measured
around the outside of the belt, typically
with a tape, while the belt is still on the drive.
This measurement can be used to determine
the closest belt length when a part number
is not available.
Poly Chain
GT
Belt —
Gates trade name
for a premium, high torque, polyurethane,
synchronous belt with aramid tensile cord.
Poly Chain
GT
Carbon
™
Belt —
Gates trade
name for the ultimate, high-torque, polyurethane,
synchronous belt utilizing carbon cord as the
tensile member.
Polyfex
Belt —
a Gates trademark for a
polyurethane V-belt that is often used in high
precision drives, such as machine tools and
small appliances.
Polyfex
JB
Belt —
a Gates trademark for two
or more joined polyurethane V-belts.
PoweRated
Belt —
Gates trade name for a line
of premium fractional horsepower belts.
PowerBack
Belt —
Gates trade name for a
specialty construction V-belt with a fat back ±or
driving roll-to-roll conveyor applications.
PowerBand
Belt —
Gates trade name for
two or more belts joined together at the top
of the belt. It is also referred to as a joined
or banded belt.
Power Curve
Belt —
Gates trade name for
a special fexible construction V-belt ±or curved
conveyor applications.
PowerGrip
Belt —
Gates trade name for
several synchronous product lines including tim-
ing, HTD
, GT
2, GT
3, and Twin Power
.
PowerGrip
HTD
/GT
2/GT
3 Belts —
Gates
trade name for a high-torque drive system
with a curvilinear tooth proFle. These belts are
often referred to as Gilmer, timing, positive or
synchronous belts. They are sometimes referred
to, in error, as cogged or notched belts.
Predator
Belts —
Gates trade name for
the highest performing V-belts. Predator
belt construction is available in narrow
and classical proFles and single and
PowerBand
conFgurations.
Radius Relief —
Construction that minimizes
corner wear and works with concave sides to
assure proper support of the belt.
Super HC
/Super HC
Molded Notch Belt —
Gates trade name for a drive system
commonly known as narrow or deep wedge.
Superior Length Stability —
Assures V-belts
require less re-tensioning and take-up during
their service.
Synchro-Power
—
Gates trade name for
endless polyurethane construction belts,
also known as Gates Mectrol
belts. Also
available as long length belting in specialized
constructions such as food grade, heavy
backing, textured backing, and utilizing
various tensile cord materials.
Synchronous —
Generic term used for
power transmission drive systems utilizing
toothed belts in mesh with grooved pulleys
or sprockets. These systems are also
referred to as Gilmer or timing.
Tensile Cord —
V-belts typically use special
polyester cords, with aramid used in some
specialty belts, such as Predator
and
PoweRated
belts. Synchronous belts
generally have Fberglass cords, except ±or the
carbon Fber used in Poly Chain
GT
Carbon
™
belts. Steel is rarely used, except in some
special or Made-to-Order synchronous belts.
Tooth Facing —
Specially woven and treated
nylon fabric that reduces friction of the belt
in the sprocket and resists abrasion and
other tooth damage.
Tri-Power
Belts —
Gates trade name
for molded notch classical section or
conventional belts.
Trufex
Belts —
Gates trade name for
Fractional Horsepower (FHP) light duty belts.
PowerGrip
TruMotion
Belts —
Gates trade
name for white rubber belts for use on light
power and precision applications with
cleanliness requirements.
Truncated Rib —
Construction proFle that
provides improved crack resistance, higher
load-carrying capacity and improved fex
fatigue resistance.
Twin Power
Belts —
Gates trade name for
PowerGrip
rubber synchronous belts ideal
for serpentine applications. Twin Power belts
are specially made to handle the same load
capacity on either side of the belt.
V80
—
Gates trade name for V-belt matching
system that meets ARPM tolerances. Any V80
belt will match and per±orm with any other V80
belt of the same size and type.
Wrapped —
see
Banded
.
Power Transmission
Metal Terminology
Bushings —
A hub system that allows
adaptation of sheaves, pulleys and sprockets
to varying shaft sizes. Common bushing
systems offered by Gates are QD
and
Taper-Lock
.
Idler —
an adjustable free-wheeling pulley
used to apply pre-tension to belts and take
up slack.
Pulley —
A common term that usually refers
to sheaves, sprockets or pulleys. The term
correctly used applies to metal used for
PowerGrip
timing belts.
Sheaves —
Metal products with “V”
shaped grooves specially designed for
various types of V-belts.
Sprockets —
Metal products for high-torque
synchronous power transmission systems,
such as PowerGrip
GT
3 and Poly Chain
GT
Carbon
™
. Sprockets are speciFcally designed
to transmit power with only the corresponding
belt product line.
Molded Notch Construction Single V-Belts
3VX250-3VX1400
XPA630-XPA3000
5VX350-5VX2000
XPB1250-XPB3000
8VX1000-8VX2000
XPC1800-XPC3000
AX21-AX173
10X530LI-10X1750LI
BX24-BX300
13X715LI-13X4000LI
CX51-CX360
17X875LI-17X8636LI
XPZ604-XPZ3000
Banded Construction Single V-Belts
3V250-3V1400
D98-D660
5V500-5V3550
E144-E660
8V1000-8V6000
SPZ3150-SPZ3550
A24-A200
SPA3070-SPA4500
B28-B472
SPB3150-SPB8000
C44-C450
SPC3150-SPC10600
Molded Notch Construction
PowerBand
V-Belts
3VX250-3VX1400
BX42-BX158
5VX500-5VX2000
CX75-CX173
Banded Construction PowerBand
V-Belts
3V800-3V1400
A62-A180
5V670-5V3550
B62-B315
8V1000-8V6000
C60-C420
D144-D660
The following Super HC
, Hi-Power
II
and Tri-Power
belts are V80
belts:
a3