GLOSSARY OF BEARINGS

A | B | C | D | F | G | H | I | M | O | P | R | S | T | V

A

Aramid Tensile Members

They are also referred to as Kevlar or Flexten.

Arched Top

Construction feature which provides superior strength to prevent distortion of the tensile section.
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B

Banded Belts

Belts with a fabric cover over the belt body. They are also referred to as wrapped or covered belts.

Bandless Belts

Belts with no fabric cover. They are also referred to as cut edge, raw edge or machined edge.

Bareback Belts

Belts manufactured without rubber material being applied to the outside surface of the banded belt. They are also known as low friction, dry cover or clutching cover.

Belt Body

The main part of any belt that generally surrounds, supports and protects the load-carrying tensile cords.
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C

Compounds

Mixtures of rubber, plastics and other materials which are used to form the body of the belt.

Concave Sides(U.S. Patent 1813698)

Construction which allows belt to make uniform contact with sheave groove, thus distrubuting wear uniformly.

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D

Datum Diameter

A systems which defines specific sheave and belt dimensions, previously known as the pitch system(diameter or length) for classical belts and sheaves.
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F

Flex-Bonded Cords

Strong chemical bond between rubber body and tensile cord. Allows for absorption of bending stress and long service life. Avoids premature failure due to cord separation.

Flex-Weave Cover

Patented nylon and cotton blended fabric consturction which increases flexibility and reduces cover stress providing longer cover life and longer protection of belt core.
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G

Gates Curves

Belts with this feature compensate for effects that occur when a v-belt bends in a sheave. Curved belts feature concave sides, radius relief and arched tops.
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H

Hi-Power II Belt

Commonly referred to as classical, wedge or conventional.
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I

Idler

1) A non-powered pulley, sheave, sprocket or wheel around and classical section V-Belts in metric sizes.
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M

Metric Power Belt

V-Belts in metric sizes.

Micro-V Belt

Commonly referred to as v-ribbed, multi-rib and Poly-V.

Molded Notch Belts

Often referred to as cogged, notched or cut notch belts. Notches reduce bending stress.

Multi Speed

Commonly referred to as variable speed, wide range variable speed, adjustable speed and variable pitch.
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O

Oil and Heat Resistance(OHR)

Property of the belt which allows it to withsatnd the affects of oil, heat, sunlight, ozone, weather and aging.
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P

Poly Chain GT Belt

A premium, high torque, polyurethane, synchronous belt with aramid tensile cord.

Polyflex Belt

A polyurethane v-belt which is often used in high precision dirves, such as machine tools and small appliances.

Polyflex JB Belt

Two or more joined polyurethane v-belts.

PowerBand Belt

] Two or more belts joined together at the top of the belt. It is also referred to as a joined or banded belt.

Power Grip Belt

Are several synchronouss such as timing, HTD, GT and twin power.

PoweRated Belt

A line of premium fractional horsepower belts.

PowerGrip HTD/GT Belt

High torque drive system with a curvilinear tooth profile. 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 Belt

The most agressive PowerBand V-Belt made for shockloaded applications. Predator belt construction is available in narrow and classical profiles.
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R

Radius Relief

Construction which minimizes corner wear and works with concave sides to assure proper support of the belt.
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S

Static Conductive Belts

Specially constructed for potentially hazardous (explosive) environments. They are often referred to as static safe or static resistant.

Super HC/Super HC Molded Notch

A drive system commonly known as narrow or deep wedge.

Superior Length Stability

Assures V-Belts require less retensioning and take-up during their service.

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.
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T

Tensile Cord

V-Belts typically use special polyester cords, with aramid used in some specialty belts, such as Poer Cable and PoweRated Belts. Synchronous belts generally have fiberglass cords, except for the ramid fiber used in Poly Chain GT belts. Steel is rarely used, exept in some special 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

For molded notch calssical section or conventional belts.

Truflex

For Fractional Horsepower (FHP) light duty belts.

Truncated Rib

Construction
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W

V80

For V-Belt matching system that meets RMA tolerances. Any V-80 belt will match and perform with any other V-80 belt of the same size and type.
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