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3/8" ID Bearings 6-pack
$15.00

Includes free technical support.Learn More
Single 3/8" ID Bearing
$2.60

Includes free technical support.Learn More
Introduction:

These bearings can be used for any shaft or screw that measures 3/8". We used these to allow 3/8" lead screws to be rotated.

Description:

Use these bearings to stabilize your 3/8" lead screw next to the coupling. Two of these bearings are typically used for each lead screw, one bearing at each end of each lead screw.

Inside diameter: 3/8"Outside Diameter: 7/8"Width: 9/32"

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Related Tutorials
Technique to Minimize Backlash by Gérard C.
Getting rid of backlash seems to be the biggest concern for the CNC hobbyist, especially when milling PCBs since copper traces for surface mount devices are used. Surface mount devices are very small electronic parts that contain leads that are extremely close together, or the leads are found on the bottom of the component and the part usually lays flat on the PCB (Printed Circuit Board).
Thumbnail: Lead Screws of Differing Types Single Starts, 2 Starts, 5 Starts, TPI, Lead, HUH?!?
I think it's about time to talk about lead screws. So, what is this lead screw that is always mentioned throughout this website. Lead screws also have all of these terminologies and esoteric language that I will demystify. Maybe you will also start to understand the math behind the linear motion and how different lead screws will provide various linear motion characteristics.
Step 15: Y-Axis Lead Screw
This tutorial is dated, if you are considering a CNC for your personal use, we would highly recommend purchasing a kit that is very stable from our wide range of machines available. Instead of using allthread for the lead screw and a standard nut, consider using a 5 start lead screw and anti-backlash nut. It will keep you from pulling out your hair by running much smoother and faster. You've completed the nut in the last step. What is power transmission without a screw? In this video, I will demonstrate the holes needed for the bearing and nuts for each end and driving the screw. The process is similar to the z-axis lead screw assembly; but the screw is attached at each end. In my opinion, it's not that important to secure both ends of the screw, but you do want to make sure the free end of the screw will not flap around, so some type of mechanism to keep it in place helps.
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