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Main view of the 1/4 View from the 1/2 View of the 1/4 View of the 1/2 Caliper measurement of the 1/4 Caliper measurement of the 1/2 Caliper measurement of the length at 1.19 inches of the 1/4 Caliper measurement of the outside diameter at 1 inch of the 1/4
Main view of the 1/4 View from the 1/2 View of the 1/4 View of the 1/2 Caliper measurement of the 1/4 Caliper measurement of the 1/2 Caliper measurement of the length at 1.19 inches of the 1/4 Caliper measurement of the outside diameter at 1 inch of the 1/4
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1/4" to 1/2" One Piece Flexible Coupler
$21.00
Introduction:

Couple your shafts or lead screws with this one piece 1/2" (12.7mm) to 1/4" (6.35mm) flexible clamping coupling. These flexible couplings will allow a bit of misalignment.

Description:

1/2" to 1/4" - one piece flexible clamping coupling (also called coupler). Typical flexible couplings will contain two hubs and a rubber spider in the middle. This coupling is a one piece coupling so there is no need to stabilize the lead screw, or shaft since this coupling will maintain its structure.

There are two bores in this coupler so a 1/4" motor shaft can be coupled to a 1/2" shaft or lead screw.

The outside diameter is 1" (25.4mm). The length of the coupler is 1.19 inches (30mm).

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Related Tutorials
DIY Coupling: A coupler for the motor and lead screw (from Marc K.)
This creative coupling solution comes from another generous user of the site. He has devised a way to couple the motor to the leadscrew with standard aluminum tubing. Marc has graciously allowed me to show you this creative idea.
Step 21: Driver Caps, Resistor Networks and Mosfets
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. The resistors are in, right? Ah, I know, you want to see the complete assembly before you dig in. Ok, on to this part of the assembly. Please don't ask me what Mosfets are, but the word sound cool! I can tell you that they stand for Metal Oxide Semiconductor Field Effect Transistor. I have personally read about fifty descriptions of this electronic animal and I still can't figure it out. It doesn't say much for a Berkeley grad! Well, I'm open to some plain English interpretations without the word "drain" in them. Are you still with me?
Step 20: Stepper Driver Part 1 - Resistors
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. Well... here we are, finally getting started with the electronics portion of the video series. The entire structure of the CNC machine is complete with the exception of the router mount. We will get to that a little later. For now, we will start on the assembly of the HobbyCNC 3 axis chopper unipolar stepper driver.
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