Standard v belts are single v belts that fit in single-groove pulleys. They can also be used side-by-side in wide belt drives that are designed for multiple single belts. They are easy to install and remove, resistant to oil and heat, and require little maintenance. Standard v belts are a common choice to power equipment in a range of industrial, automotive, and commercial applications.

Cassical v belts are oil- and heat-resistant, and static-conductive. Use in medium HP industrial applications requiring single or multiple v belt drives. T

This article comes from grainger edit released

Classical v belt:

Conventional v belt is the most common v belt type and has been around the longest. The Initial classical V design replaced leather belts by taking over their applications in a wide range of industries, such as agriculture, ventilation, and industrial machinery. Classical v belts are capable of covering a load range from fractional(less than 1 HP) to 500 horsepower. They are less efficient than narrow v belt and generally contribute to higher bearing loads. However, classical v belts have high tolerance for poor operating conditions.

The general part number format is the cross section size and the inside length in inches ( e.g. B50 is a B section of 50 inches inside length ).

General cross sectional dimensions that are used in the US are shown below.

Narrow V series:

Narrow belts are optimum for load transfer and force distribution because of their greater depth to width ratio. That’s their advantage over classical V belts. Narrow belts are also suitable for drives with high belt speeds, again, for their powerfully compact size. Narrow belts have the ability to transmit up to three times the horsepower of classical v belt in the same drive space. They can handle drives from 1 to 1000 horsepower.

Part number designation for wedge belts are shown in terms of belt top width followed by nominal outside length in inches. The numerical prefix indicates the belt top width in one eighth of an inch. For example 5V500 part number indicates 5/8” top width with 50.0” outside length.

General cross sectional dimensions that are used in the US are shown below.

Fractional Horsepower Belt:

FHP light duty v belts are used most often as single belt on drives of 1 horsepower or less. Its design is for relatively light loads. The common applications for this v belt type are domestic washing machines, small fans, refrigerators, and garage equipment. Light v belts should never be used on any heavy-duty industrial applications, even if they seem to fit the classical or narrow v belt pulley grooves.

Part number designation for FHP belts are similar to wedge. They are identified with a 2L, 3L, 4L or 5L prefix. The numerical prefix indicates the belt top width in one eighth of an inch followed by nominal outside length in inches. For example 3L300 part number indicates 3/8” top width with 30.0” outside length.

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V belts are friction-based torque transmitters that derive their name from the cross section trapezoidal outlook. The belts were designed to help solve the problems misalignment and slippage found in the common flat and round belts. The belts provide one of the best combinations of speed of movement and traction in industrial settings.

The v belts are designed from three core components. One, they have endless steel wires that help to provide enforcement and strength when transmitting torque. The belt also includes a rubber compound that surrounds the wires and takes the characteristic V-shape. The rubber compound also serves as a compression medium to absorb shock. The last component used to make v belts is a protective cover. This layer is made of plastic and helps to enhance the belt’s endurance against high temperatures during movements. Note that even with the protection, it is important to ensure that your motor and operating environment are at the right temperatures to increase the efficiency of the belt.

V belts are classified into five sections that (sections); A, B, C, D, and E. This grouping is based on the cross-sectional size and the power that can be transmitted by the belt. Here is a closer look at these dimensions. Section ‘A’ Type – 0.1 kW to 3 kW, Section ‘B’ Type – 0.5 kW to 6 kW, Section ‘C’ Type – 1 kW to 12 kW, Section ‘D’ Type – 3 kW to 32 kW, Section ‘E’ Type – 5 kW to 50 kW. The above values point at the capacity of a single belt. Therefore, if you want to achieve higher torque rates, you can simply use more belts. Note that if your device is designed to only use one V-belt, you might need to seek expert assistance to make appropriate modifications before additional belts can be used.

This article comes from mrosupply edit released

V BELTS & PULLEYS HAVE SEVERAL USES

• To increase or reduce speed
• To increase or reduce torque
• To transfer power from one shaft to another

V BELT TYPES PREFIX DEFINED

Understanding the prefix of any v belt part number is important. The prefix offers dimensional standards, and somewhat defines the purpose of the v belt. This knowledge allows you to understand which v belts can be substituted, and which cannot.

2L, 3L, 4L, and 5L prefix – The “L” stands for light duty, and is designed for use with fractional horsepower motors. Meaning less than 1 HP. “L” style v belts are often designated as light duty industrial, or lawn & garden.

A, B, C, D, E, And AX, BX, CX, and DX size v belts are more industrial. They’re sometimes referred to as “Conventional” v belts. The “X” is a standard specification for inside perforations also known as notched or cogged v belts. Although “Conventional” v belts can be substituted for “L” style v belts which appear to be the same, “L” style v belts should never be used as replacements for “Conventional” v belts.

My experience with “X” designation v belts is that they last longer than those without it. Meaning a “BX” belts last longer than a “B” Belt. Especially in cases where one or more of the pulleys are small in diameter. Smaller diameter pulleys offer less stress on “X” style v belts due to the notched under-bottom.

3V, 5V, 8V, AVX, BVX, CVX, DVX – IMPORTANT: Don’t Confuse “V” In The Part Number Prefix! I run this warning because common sense would lead you to believe a 3V belt is a comparable substitute for a 3L, or that an AVX v belt is a suitable substitute for an AX v belt. Common sense would be wrong. The “V” designation in the prefix is a difference in the profile of the v belt. Never substitute or mix these v belts. They do not fit properly into pulleys designed for 3L and AX v belts. They do not make full contact against the bottom and walls, and therefore will fail to perform.

This article comes from micrometl edit released