What are the typical sizes of roller catches and how do I choose the right one?

Castors are available in a variety of sizes to meet the different needs of DIY projects. Standard sizes usually range from 50mm to 250mm in diameter. Some common sizes are 50mm, 75mm, 100mm, 125mm, 150mm, 200mm, and 250mm.

Choosing the right size for castors depends on several factors:

• Load weight: The heavier the object to be transported, the larger the castor should be. Larger wheels can distribute the weight better, thereby minimizing stress on the floor.
• Type of use: For light-duty applications, such as moving furniture, smaller castors are usually sufficient. For heavier industrial applications, larger wheels are required.
• Floor surface: On uneven surfaces, larger wheels are more effective in ensuring stability.
• Frequency of use: If the castors are used regularly and intensively, it is advisable to use larger wheels, as they have a longer service life.

It is always advisable to consider the specific requirements and conditions of your project before making a decision.