Polyurethane Timing Belt

Polyurethane timing belts include gears such as: T2.5 - T5 - AT5 - T10 - AT10 - T20 - AT20, these polyurethane timing belts are used in both open-loop and closed-loop circuits.

These timing belts have very good resistance to wear. The hardness of polyurethane timing belts is usually 86A. Other features include their good resistance to acids, alcohol compounds, and various industrial oils.

The wires used in these timing belts are made of steel, aramid, polyester, and kevlar, which vary depending on their use in the relevant industry. For example, the steel wires used in polyurethane timing belts are made of thin and galvanized wire strands twisted together, and the flexibility and durability of these wires depend on their diameter and specifications.

Open-loop Polyurethane Timing Belts

An example of wire arrangement in polyurethane timing belts

V-shaped belts made of polyurethane

Polyurethane timing belts, also known as bone belts, are made of polyurethane and are produced with high strength in various forms such as A, B, C belts, sometimes with grip coating, sometimes with crown-like coating, and in some cases without coating.

Polyurethane timing belts are made of thermoplastic polyurethane with metal wires made of stainless steel and are suitable for power transmission systems. They are produced in various pitches and sizes and have the following properties:

Polyurethane belts are resistant to wear and ozone, oil, and grease. They operate in temperatures ranging from 25 to 80 degrees Celsius and in short intervals up to 110 degrees Celsius. Polyurethane belts do not require repair and maintenance.

Polyurethane Timing Belt

During the installation stages of timing belts, it is crucial that the belt is fully placed in the pulley grooves before applying the final tension. Marpech drives with multiple pulleys and drives with large pulleys, especially against the tension problems of timing belts where the belt teeth are only partially in the pulleys during installation, are vulnerable.

To prevent these issues, the installation tension of the timing belt must be evenly distributed by rotating the system in all belt slots. After confirming the correct placement of the belt teeth in the pulley grooves, the tension of the timing belt must be rechecked and confirmed. Failure to do so may lead to conditions under tension on the timing belt.

Closed-loop Timing Belt

Closed-loop timing belts are used in various machines with precise and controlled movements and high speeds, and they operate without any issues in temperature ranges of 25 to 80+ degrees Celsius. They have exceptional resistance to oil, grease, and fats. Closed-loop timing belts can be made of different materials such as plastic, polyurethane, kauchuk, and more.

Kauchuk closed-loop timing belts are made of rubber compound (rubber) and fiber threads. In closed-loop timing belts, kauchuk closed-loop timing belts with various inch and millimeter pitches are used for diversity in manufacturing and applications.

Polyurethane closed-loop timing belts are made of thermoplastic polyurethane with metal wires made of stainless steel and are suitable for power transmission systems. Polyurethane closed-loop timing belts do not require repair and maintenance. Additionally, these closed-loop timing belts are resistant to wear, oil, and grease.

Due to their heat resistance and greater flexibility compared to polyurethane closed-loop timing belts, rubber closed-loop timing belts are suitable for use in various industrial equipment. The components of rubber closed-loop timing belts are made of polyurethane, and the embedded wires are used to increase tensile strength.

Also, the standard production widths and various pitches of closed-loop timing belts increase the selection options.

Open-loop Timing Belt

Open-loop timing belts are made of kauchuk (rubber open-loop timing belt) or polyurethane open-loop timing belts with special compositions. Depending on their use, these timing belts are produced with different pitches, various tooth profiles, and different materials. The performance of open-loop timing belts is in machines where power transmission is done with precision and higher speed.

Precise movement of the open-loop timing belt will result in vibration-free and slip-free motion.

Open-loop timing belts can be made of rubber or thermoplastic polyurethane with glass fiber wires and threads. In machines that need to transfer materials to another stage, open-loop timing belts are used.

For example, in the food industry for transferring food materials, in the glass industry for transferring glass, and in the tile and ceramic industry for transferring to various parts, open-loop timing belts are used.

To install open-loop timing belts, clamps or clamps can be used to have linear motion and perform back and forth movement for material transfer, or both ends of the open-loop timing belt can be connected with a special method (joint) to rotate and transfer materials in a rotary manner.

Timing belt Polyurethane

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