In this case these rails and bearings where purchased for a lift table. In the past i have bought similar rails for CNC machines i custom make for customers. To answer your question, it comes with no holes on the base, and the base measures close to 2 inches across the bottom with about a 1/2 inch of land on both side…
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In this case these rails and bearings where purchased for a lift table. In the past i have bought similar rails for CNC machines i custom make for customers. To answer your question, it comes with no holes on the base, and the base measures close to 2 inches across the bottom with about a 1/2 inch of land on both sides approximately 3/16 thick. Your going to look at either a 4 or 5 mm bolt to work with your 80/20 so a hex head bolt works fine, but it does come close to the aluminum bearing block. So to recap "all of your drilling comes from you" good luck on your project. By the way i did not find a lot of misalignment from a to b over 47 inches with the original bearing mounts perhaps 0.0018 of a an inch.. But did find the holes on the bearing block out of square.
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In this case these rails and bearings where purchased for a lift table. In the past i have bought similar rails for CNC machines i custom make for customers. To answer your question, it comes with no holes on the base, and the base measures close to 2 inches across the bottom with about a 1/2 inch of land on both sides approximately 3/16 thick. Your going to look at either a 4 or 5 mm bolt to work with your 80/20 so a hex head bolt works fine, but it does come close to the aluminum bearing block. So to recap "all of your drilling comes from you" good luck on your project. By the way i did not find a lot of misalignment from a to b over 47 inches with the original bearing mounts perhaps 0.0018 of a an inch.. But did find the holes on the bearing block out of square.
By Mortimer Beck
