Answer
Jul 23, 2026 - 06:57 AM
Bore (arbor) size must match your saw’s spindle for safe and accurate operation. Most portable saws use a 5/8" arbor, but some blades offer multi-fit options, such as the Amana Tool RM-550 with 1/2", 5/8", and 10mm bores, or a diamond knockout as on the Timberline 215-240. Selecting the correct bore ensures a secure fit and smooth operation. The range of bore sizes and knock-out options across products makes it easy to find a blade compatible with your machine.
