PowerGrip® GT® Belt Drives
PowerGrip® GT® Belt Drives
PowerGrip® GT® Belt Drives
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Micro-V ® <strong>Belt</strong> <strong>Drives</strong><br />
For information on additional Micro-V cross<br />
sections, see the Micro-V <strong>Belt</strong> Drive Design Manual<br />
15408.<br />
Gates Micro-V <strong>Belt</strong>s are superior to other V-ribbed<br />
belts. The reason is the shorter truncated V-rib<br />
design coupled with its premium construction.<br />
The truncated rib profile adds these performance<br />
qualities:<br />
■<br />
■<br />
■<br />
■<br />
■<br />
■<br />
Crack resistant ribs<br />
Higher load-carrying capacity<br />
Reduced flex fatigue<br />
Increased performance on small diameter sheaves<br />
allows smaller design packages<br />
Cool running<br />
Greater tolerance to sheave groove debris<br />
■ Improved resistance to back bending from<br />
tensioning idlers<br />
Gates Micro-V <strong>Belt</strong>s offer 80% higher horsepower<br />
capacity than RMA standards. Extra load-carrying<br />
capacity means extra long life.<br />
No other V-ribbed belts are built as well as Micro-V<br />
<strong>Belt</strong>s, and the Gates belts provide you with the long<br />
and improved service life required in the industry<br />
today.<br />
Micro-V ® <strong>Belt</strong>s<br />
Construction<br />
Gates Micro-V belts feature a smooth-running nylon<br />
cross-cord overcord and high modulus, low-stretch<br />
polyester tensile cord for added strength and<br />
dependability. An optional aramid tensile cord is<br />
available on a made-to-order basis.<br />
A specially formulated polychloroprene rubber<br />
compound resists oil, heat and cracking. Micro-V<br />
belts are static dissipating for added safety.<br />
S g<br />
b b<br />
Figure 20 – Micro-V Cross Section<br />
Nominal Rib Nominal<br />
Width Thickness<br />
Cross Section (S g ) (in) (h b ) (in)<br />
H 0.063 0.100<br />
J 0.092 0.128<br />
K 0.140 0.209<br />
h b<br />
Nominal Top Width, b b = Nr x Sg<br />
Where: N r = Number of ribs,<br />
S g = Pulley groove spacing<br />
Table 28 – Reference Standard Micro-V<br />
Dimensions<br />
Standard <strong>Belt</strong> Nomenclature<br />
The Micro-V <strong>Belt</strong> is correctly identified by a threepart<br />
symbol consisting of: (1) a standard length<br />
designation; (2) cross section, and (3) number of<br />
ribs.<br />
For example: The belt designation “420J6”<br />
represents:<br />
1. An effective length of 42.0 inches<br />
2. J Cross Section<br />
3. 6 ribs wide.<br />
Cross Sections<br />
Light Duty Industrial Micro-V <strong>Belt</strong>s are available<br />
from stock in a J Cross Section. H and K Cross<br />
Sections are available on a made-to-order basis.<br />
Fig. 20 shows a cross-sectional view and illustrates<br />
the nominal belt dimensions – rib width and belt<br />
thickness – for H, J and K cross sections. These<br />
belts will operate in pulleys that are manufactured to<br />
the RMA standard for the specific cross section.<br />
The World’s Most Trusted Name in <strong>Belt</strong>s, Hose & Hydraulics.<br />
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