3 Tips for Locating the Step on Linear Guides

Getting the right fit for linear guides and mounting blocks is crucial. Without the right fit, the slide guide can deteriorate over time, causing large-scale operational problems.

At MISUMI, customers often ask us how to find the step for their linear guides, as chamfer sizes are not directly specified in the product descriptions. There are a couple of ways to locate the step so everything fits and moves together without undertaking the seemingly-impossible task of trying to actually measure chamfer size yourself.

 
locating step
Locating Step Image from MISUMI

1. Using Height Adjust Blocks
Take a look at the height adjust block that you ordered alongside your linear guide rail. Each height adjust block comes with a reference step feature for the size of its partner linear guide. Along with this information, you’ll also find the maximum radius and step height measurements that this particular height adjust block can work with.

It’s safe to assume that you can use these exact same measurements, given in 1mm increments, to help you find the step of the linear guide.

2. Using the Chamfer Size
Alternatively, you can go the long route in finding the chamfer size to give you the correct numbers to locate the step. We have put together a guide on how to find chamfer size, which you may find useful.

Check out the two dimensions labeled “Ca” and “Cb” in the upper left-hand corner of the guide. This tells you what the size of the chamfer is so you can decide the maximum limits of your machining radius, ensuring that everything fits and works together without breaking due to friction.

3. Eliminate the Need for the Step with Mounting Dowel Holes
It’s also worth noting that you may not even have to know the step for your linear guide at all.

Normally, you only need to know the size of the step so you can mount the guide. You can construct and operate your machine effectively by drilling a hole in the mounting surface, inserting a dowel pin, and then mounting the guide by putting the guide on top of the pins, inserting them through the pre-made mounting holes.

 

Misumi Linear Guide Product Line
Check out our linear guides page to see our full range of products and sizes, or call one of our expert engineers at 1-800-681-7475 to discuss which pieces would work best for your current and upcoming projects.

 

 

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