Frequently Asked Questions (FAQs)
1. What are ring shims used for?
Ring shims are used in shim stacks to achieve preload. They are paired with a thinner centering shim to maintain their position. The difference in thickness between the ring shim and the centering shim determines the amount of preload in the stack.
2. What are arbor shims used for?
Arbor shims are used for precise spacing in machinery such as milling cutters, saws, and grinding tools. They help ensure accurate alignment and performance of the machinery.
3. What are the different types of shims?
There are various types of shims, including arbor shims, variable shims, slotted shims, shim rings, and shim stock. Each type serves a specific purpose and offers unique advantages for different applications. They are all used to compensate for tolerances and achieve proper fit and alignment.
4. What are the benefits of shims?
Shims provide several benefits, such as filling gaps or spaces between objects, supporting and adjusting for a better fit, and providing a level surface. They are commonly used to ensure proper alignment, compensate for tolerances, and improve the performance of various components and machinery.
5. How do I know what size shims I need?
To determine the size of shims needed, you can use the equation: New shim size = (measured valve clearance – specified valve clearance) + old shim size. This calculation helps determine the appropriate shim size for achieving the desired clearance.
6. Are plastic shims better than wood?
Plastic shims have advantages over wood shims. They require less shaping, are available in consistent shapes and thicknesses, and have consistent material properties. Plastic shims are also stronger, more durable, lighter, and more cost-effective compared to wood shims.