Conveyor belt top & bottom cover thickness varies | Martin Engineering (2024)

Whereas some belts have the same cover thickness on both sides, most belts are fabricated with the pulley-side cover somewhat thinner (lighter in gauge) than the carrying side of the belt, because of the difference in wear resistance needed. The difference in thickness between the top and bottom covers is referred to as a belt’s aspect ratio. However, the difference in thickness between the two covers cannot be too great, or the belt may cup.

The problem with belts with poorly-designed aspect ratios is that the larger mass of rubber will shrink more than the smaller. Consequently, if a belt has an inordinately large top-to-bottom cover ratio, and the top cover shrinks due to age, exposure to ultraviolet light, or other factors, the belt will cup up, reducing the area of the bottom cover in contact with the idlers. This will make it more difficult to keep the belt running in alignment. This problem is most likely to occur when, in the interest of getting a thick top cover to extend service life, a plant orders belting with a top cover that is too thick for the bottom cover.

To provide consistent shrinkage and more consistent tracking, an aspect ratio of 1.5-to-1 is recommended for belts up to 900 millimeters (36 in.), with a 2-to-1 aspect ratio recommended for belts from 1000 to 1600 millimeters (42 to 60 in.). For belts above 1600 millimeters (60 in.) a 3-to-1 aspect ratio is recommended. Belting with a 3-to-1 aspect ratio is suitable for many purposes and is the ratio mostly commonly stocked at belting distributors.

Topics:Conveyor Belt Mistracking,Conveyor Belt Component Damage

Conveyor belt top & bottom cover thickness varies | Martin Engineering (2024)


What is the thickness of conveyor belt top and bottom? ›

The thickness of the top cover of the heat-resistant, cold-resistant, oil-resistant, and acid-resistant conveyor belt should not be less than 4.5mm, and the thickness of the upper and bottom covers should be multiples of 1.5, especially for heat-resistant conveyor belts If the rubber surface is too thin, the heat of ...

What will be the top cover thickness of rubber? ›

Generally, minimum thickness of rubber cover chosen is 3 mm Top x 1.5 mm Bottom, and above. Higher tensile rating within same number of plies and greater thickness of top rubber cover choice implies increased conveyor belting wear life due to abrasion and frequent joints failure.

What are the factors or design considerations when designing a belt conveyor system? ›

To ensure safe and efficient conveying, it is essential to consider the size, shape, weight, fragility, and orientation of the product being transported. These factors play a crucial role in determining the type of conveyor and its specifications.

What are the factors affecting the selection of belt conveyor? ›

Conveyor Belt Selection Guide Factors:
  • Material Compatibility: The conveyed material's characteristics greatly influence conveyor belt selection. ...
  • Load Capacity: Determining the maximum load the conveyor will handle is vital. ...
  • Operating Environment: ...
  • Conveyor Speed: ...
  • Belt Width and Length:

What is the thickness of a belt drive? ›

The standard belt widths are 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, and 45 mm, totaling eight types. The standard belt thickness is 2.6 mm (belt standard lengths: 1000 to 3000 mm) and 3.0 mm (belt standard lengths: 4000 to 5200 mm), totaling two types.

How thick is a good belt? ›

A belt that is too thick might be good as a gun belt, but it will not be very comfortable to wear all day. In our experience, the ideal thickness for most people ends up being 8.5 - 9.5 ounces, or about 1/8 - 9/64 inches thick.

What is cover thickness? ›

The minimum required cover thickness of the foundation reinforcement is around 40 mm for foundation lying on a lean concrete layer and around 70 mm for foundation in direct contact with the soil. The required covering may be created by point or even better by linear spacers.

What is the standard belt width of a conveyor? ›

REGULAR standard conveyor belts width sizes in different thickness produced (mm) : 500, 600, 650, 800, 1000, 1200, 1400, 1600, 1800, 2000. Conveying Carrying Capacity of 800 mm width conveyor-rubber-belt is approximately 140 tons per hour at belt speed of 45 meter / minutes.

What is the mechanical design of a conveyor belt? ›

A belt conveyor consists of an endless and flexible belt of high strength with two end pulleys (driver and driven) at fixed positions supported by rollers. In this work, 3 roll idlers are required for adequate support of materials transported and protection of the belt along its length.

What must be considered when choosing a conveyor system? ›

To ensure you get a high return on investment, conveyor selection must be made with key considerations in mind. For example, you need to think of the product type, the weight of your products, available facility space, environmental conditions, and cleaning and maintenance resources.

What is the basic conveyor belt design? ›

The belt conveyor design includes two motorized pulleys with the conveyor material looped over them. To initiate the belt conveyor's motion, the pulleys move at the same speed and in the same direction. All of the different types are used to convey materials and commodities along a continuous path.

What should be checked on conveyor belt? ›

Check the conveyor belt for cuts, cracks, or damages. Take note of any belt slippage or material spillage. Check for any conveyor belt abrasions. Check the upper and lower cover rubber for damage and excessive wear.

What makes a good conveyor belt? ›

Material: Your conveyor belt should be constructed from materials suitable to its application. These materials have different properties such as durability, flexibility and resistance to chemicals, heat and abrasion.

What determines conveyor belt carrying capacity? ›

Even if all other things are equal, the capacity will vary depending on the kind of material conveyed. Many materials and product characteristics can affect how much product conveyors can move, such as size, shape, bulk density or weight per cubic foot, tendency to pack or bridge, and more.

How thick is a 2 ply conveyor belt? ›

2 Ply Rubber Conveyor Belt, Thickness: 5 Mm-16 Mm.

What are the standard dimensions of a belt conveyor? ›

REGULAR standard conveyor belts width sizes in different thickness produced (mm) : 500, 600, 650, 800, 1000, 1200, 1400, 1600, 1800, 2000. Conveying Carrying Capacity of 800 mm width conveyor-rubber-belt is approximately 140 tons per hour at belt speed of 45 meter / minutes.

How thick is a V-belt? ›

VC is a classical, cogged V-belt where single belts have a nominal thickness of 5/32" and a nominal top width of 15/64". L is a micro-ribbed V-belt with multiple ribs that are each 19/64" thick. M is a micro-ribbed V-belt with multiple ribs that are each 15/32" thick.

What is 3 ply conveyor belt thickness? ›

3 Ply Rubber Conveyor Belt, Belt Thickness: 5 - 10 mm.


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