V-Belts Families
Classic belts
This is the most common type of V belts. They are commonly used in agricultural applications and industrial machinery.
They have a good temperature resistance (-31F to 158F) but a limited resistance to oil.
The way they are measured is with the top width and the internal length (in inches). Depending on the width there are 5 types of classic v belts:
Classic A : ½” top width
Classic B: 21/32” top width
Classic C: 7/8” top width
Classic D: 1 ¼” top width
Classic E: 1 ½” top width
Double sided Belts
They are used on applications where power transmission is needed in both sides of the belt. They are commonly used in textile and industrial applications.
They have a good temperature resistance (-31F to 158F) but a limited resistance to oil.
The way they are measured is with the width of the cross section center (midpoint) and the internal length (in inches). Depending on the width there are 3 types of double sided belts:
Double Side AA: ½” center width
Double Side BB: 21/32” center width
Double Side CC: 7/8” center width.
Banded Belts
They are used by original equipment manufacturers in applications where the pulley design requires two or more v belts joined together to connect multiple pulley drives avoiding load fluctuations or belt turn over.
They have a good temperature resistance (-31F to 158F) but a limited resistance to oil.
The way they are measured is by the number of bands, the width of each band and the internal length. Depending on the width ad if they are cogged there are 9 types of banded belts:
Banded A: ½” width
Banded B: 21/32” width
Banded C: 7/8” width
Banded D: 1 1/4” width
Banded 3V: 3/8” width
Banded 5V: 5/8” width
Banded 8V: 1” width
Banded Cogged 3VX: 3/8” width
Banded Cogged 5VX: 5/8” width
Cogged Belts
They are used in applications with small pulley diameters and high speeds. The slots on the belt reduce the bending resistance and keep operation temperatures lower.
They have a good temperature resistance (-31F to 158F) but a limited resistance to oil.
The way they are measured is by the top width of the belt and the internal length. Depending on the width there are 6 types of cogged belts:
Cogged AX: ½” width
Cogged BX: 21/32” width
Cogged CX: 7/8” width
Raw edge Cogged 3VX: 3/8” width
Raw edge Cogged 5VX: 5/8” width
Raw edge Cogged 3VX: 1” width
Metric Belts
They are used in industrial applications like fan belts, vacuums, and printing industry. They can transmit 1.5 to 2 times more power than classical belts.
They have a good temperature resistance (-31F to 158F)
The way they are measured is by the top width of the belt and the internal length. Depending on the width there are 4 types of metric belts:
Metric SPZ: 10 mm width
Metric SPA: 13 mm width
Metric SPB: 17 mm width
Metric SPC: 22 mm width
Automotive Belts
They are designed mainly for the automotive industry where pulley diameters are very small, belt speeds are very high, power transmission demand very high and there are elevated operation temperatures.
They have a good temperature resistance (-31F to 158F) and resistance to oil.
The way they are measured is by the top width of the belt and the internal length. Depending on the width there are 4 types of automotive belts:
Automotive 15: 15/32” top width
Automotive 17: 17/32” top width
Automotive 22: 22/32” top width
Automotive 28: 28/32” top width
Fractional Wrapped Belts
They are designed mainly for low horse power applications that require a lower maintenance because of the operation conditions like oil, dust and high temperature. Some of the most common applications are low HP diesel engines, processing machines, pumps, mining, compressors saw and milling.
They have a good temperature resistance (-31F to 158F) and resistance to oil.
The way they are measured is by the top width of the belt and the internal length. Depending on the width there are 3 types of fractional wrapped belts:
Fractional 3L: 3/8” width
Fractional 4L: ½” width
Fractional 5L: 21/32” width
Wedge Wrapped Belts
They are ideal for applications with high HP demand in presence of oil and high temperatures.
They have a good temperature resistance (-31F to 158F) and resistance to oil.
The way they are measured is by the top width of the belt and the internal length. Depending on the width there are 3 types of wrapped belts:
Wrapped 3V: 3/8” width
Wrapped 5V: 5/8” width
Wrapped 8V: 1” width
Kevlar / Aramid Belts
Aramid belts are designed for some of the most demanding applications where high resistance against oil, grease, dirt and moisture is requires. The most common applications are mowers, aerospace and military applications.
They have a good temperature resistance (-31F to 158F) and resistance to oil, grease and moisture.
The way they are measured is by the top width of the belt and the internal length. Depending on the width there are 7 types of Kevlar belts:
Fractional Kevlar 3L: 3/8” width
Fractional Kevlar 4L: 1/2” width
Fractional Kevlar 5L: 21/32” width
Kevlar A: 1/2” width
Kevlar B: 21/32” width
Kevlar C: 7/8” width
Kevlar 3V: 3/8: width
If you need help identifying the type of belt you need you can always call us and one of our power transmission specialist will help you.