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Aramid Fiber Cord is the family name of nylons that include Kevlar®. OREGON® Aramid Fiber Cord belts are the best quality, longest lasting belts available in the market place.
OREGON® Aramid cord belts are measured by the outside circumference and can easily replace an A or B belt. Simply add 2 inches to the length for “A” belts and 3 inches to the length for “B” belts.
Measuring top width of Aramid belts
Examples 75-340 = 3/8" x 40" belt 75-468 = 1/2" x 68" belt 75-598 = 5/8" x 98" belt
Examples A48 = 75-450 B40 = 75-543
Aramid Belt Part Numbers Part numbers for the Premium Aramid Fiber Cord belts are coded to save look-up time, are five digits and are determined as followed:
A. First two digits are always 75- B. Third digit is the width of the belt 3 = 3/8" 4 = 1/2" 5 = 5/8"
C. Forth and fifth digit show the length
TECH TIP — USING BELT MEASURER 75-910 TO MEASURE A BELT
1. Define type of belt : •
• •
3L = 3/8" or 9.5 mm 4L = 1/2" or 12.7 mm 5L = 5/8" or 15.9 mm
2. Fit the belt over the blue plastic split pulley and pull the bottom half down tight.
2 3
3.
If you are measuring an industrial belt (bulgy top) look at the left-hand slot in the half pulley.
The size (section) of the belt is indicated by the intersection of the belt top with one of the white blocks, either A or B.
If you have an FHP belt (flat top), the same procedure applies to the right-hand slot. The belt in the photo is a 4L belt (the section).
4. Now that you know the belt’s profile (section), look at the window below the split pulley and find the section number for your belt (3L, 4L, 5L, A or B) printed in white on the left side of the window. The number opposite or closest is the length in inches of the belt you are measuring.