Selecting the Right Tyre Coupling

Tyre couplings play a crucial role in connecting rotating shafts and transmitting power efficiently. Whether you are replacing existing couplings, choosing tyre couplings for new projects, or exploring new options, choosing the right tyre coupling is essential for maintaining optimal performance and preventing downtime. In this guide, we’ll explore two perspectives on selecting the right tyre coupling: one for replacement and the other for a brand new selection.

Replacing your Couplings: Ensuring Compatibility for Efficient Replacement

When replacing a tyre coupling, it is crucial to identify and match the specific model and components. The tyre coupling consists of five main parts: the tyre, the two hubs, and the two taper bushes. Here’s a step-by-step guide to selecting the correct replacement parts:

a. Identification of part number on Tyre couplings and Taper Bush: Start by examining the existing tyre. Look for any markings, model numbers, or specifications imprinted on the surface. These markings often include information about the material, size, and load capacity of the tyre. Take note of these details as they are crucial for finding a suitable replacement.

Image 1: The part number “F110H-3020” is printed on the hub. This is the full Tyre coupling part number. “3020” stands for the taper bush part number.

Note that if there’s special indications such as FRAS, which stands for “Fire Resistant Anti Static”.

b. Consult with Experts: If you encounter challenges in identifying the coupling model or finding suitable replacement parts, let Shafttech know and we will assist with this.

New Selection: Selecting Tyre couplings for new applications or projects or Changing a Pin & Bush Coupling to Tyre Coupling

Selecting a tyre coupling from a catalogue involves a systematic consideration of various parameters to ensure compatibility with your specific application. Here’s a step-by-step guide that takes into account motor power, output speed, output torque, shaft sizes, and DBSE (Distance Between Shaft Ends):

1. Gather System Information: Collect the following information about your system:
   • Motor Power (kW or HP)
   • Output Speed (RPM)
   • Output Torque (Nm or lb-ft)
   • Shaft Sizes (diameters and keyway dimensions)
   • DBSE Distance (Distance Between Shaft Ends)
2. Refer to the Catalog Index: Start by looking at the index of the Fenner Tyre coupling catalogue. Look for theection related to motor power, output speed, torque ratings, shaft sizes, and DBSE.
3. Filter by Motor Power: Find the section in the catalog that corresponds to the motor power of your application. This narrows down the options to couplings suitable for your motor.
4. Consider Output Speed Requirements: Within the selected motor power range, choose the range that matches your application’s based on the output speed requirements.
5. Evaluate Torque Ratings: Check the torque ratings provided for the couplings within the selected power and speed ranges. Ensure that the selected coupling can handle the torque generated by your application.
6. Verify Shaft Size Compatibility: Look for detailed specifications on shaft sizes for each coupling. Verify that the coupling’s maximum bore sizes match the diameters of your shafts. Pay attention to keyway dimensions as well.
7. Incorporate DBSE Requirements: Find the section in the catalog that provides information on DBSE or overall dimensions. Choose the range that accommodates your system’s DBSE requirements. Consider the flexibility of the coupling in dealing with DBSE limitations. Shafttech offers special Spacer-type Tyre couplings from Fenner that can accommodate longer gaps between machinery.
8. Examine Construction Materials: Evaluate the materials used in the construction of the coupling. Consider factors such as environmental conditions, temperature, and corrosion resistance. Is there a need for explosion proof or fire resistant anti static properties?

By following these steps and considering motor power, output speed, output torque, shaft sizes, and DBSE, you can make a comprehensive and informed selection of a tyre coupling that meets the specific needs of your application. Shafttech is an expert in couplings for all industries. If you are looking for any kind of couplings, contact us today at sales@shafttech.com and we will be able to discuss your specific needs.