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Couplings to Connect Motor Shafts to Lead Screws

Couple your shafts end to end! We sell couplings in a variety of sizes and styles. Couplings are simply used to enable a motor to turn a lead screw, or other type of shaft. There are two types of couplings, rigid (one piece), and flexible (an assembly of pieces). Flexible couplings are composed of two hubs and a central spider. One hub is fastened to a motor shaft with a set screw. The other hub is fastened to the lead screw end. The rubber spider enables the two hubs to connect and turn while still allowing for a bit of flexibility in alignment and angle. Below, you will find rigid couplings and coupling sets that include two hubs and one spider for common uses, and you can purchase coupling hubs and spiders separately. Please read the conditions of purchase prior to purchasing any products offered by BuildYourCNC.com.

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3/8" Coupling Hub Large L070

$4.00
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These hubs will typically be used on motors with 3/8" shafts.

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1/2" to 1/4" Steel Rigid Coupling

$21.00
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Generally, the motor shaft with a 1/4" diameter will be inserted in one end, and a shaft, or lead screw measuring 1/2" in diameter will be inserted into the other end or vice versa.

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1/2" to 3/4" Steel Rigid Coupling

$21.00
Qty:

Generally, the motor shaft with a 1/2" diameter will be inserted in one end, and a shaft, or lead screw measuring 3/4" in diameter will be inserted into the other end or vice versa.

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1/4" to 1/4" Steel Rigid Coupling

$19.00
Qty:

Rigid couplings will keep backlash to a minimum, since the coupling is one single piece.

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1/2" to 1/2" Steel Rigid Coupling

$21.00
Qty:

Generally, the motor shaft with a 1/2" diameter will be inserted in one end, and a shaft, or lead screw also measuring 1/2" in diameter will be inserted into the other end. The screws that clamp the shafts will be tightened. These steel clamping coupling are for use with high torque motors and high inertia when the motor is changing directions.

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1/4" to 1/4" Delrin Rigid Coupling

$20.95
Qty:

Rigid couplings will keep backlash to a minimum, since the coupling is one single piece. Generally, the motor shaft with a 1/4" diameter will be inserted in one end, and a shaft, or lead screw also measuring 1/4" in diameter will be inserted into the other end. The screws that clamp the shafts will be tightened, but not too much. These types of clamping couplings will not damage the shafts.

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1/2" to 1/4" Delrin Rigid Coupling

$22.95
Qty:

With this coupling, the motor shaft with a 1/2" diameter will be inserted in one end, and a shaft, or lead screw also measuring 1/4" in diameter, or vice versa, will be inserted into the other end.

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1/4" to 1/4" Flexible Coupling Set

$11.00
Qty:

Flexible Coupling Sets - Connects a single motor to a lead screw end (Two Hubs and One Middle Spider)

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Single 1/4" Coupling Hub

$4.00
Qty:

This hub can be fastened to a 1/4" motor shaft or a 1/4" lead screw.

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Single 5/16" Coupling Hub

$4.00
Qty:

This hub can be fastened to a 1/4" motor shaft or a 1/4" lead screw.

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Single 3/8" Coupling Hub

$4.00
Qty:

These hubs will typically be used on motors with 3/8" shafts.

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Single 1/2" Coupling Hub

$4.00
Qty:

This hub is typical used to fasten to a 1/2" lead screw.

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Single 5/8" Coupling Hub

$4.00
Qty:

If you have a 5/8" lead screw, this is the hub for you.

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Single Coupling Spider

$3.00
Qty:

This is the middle section of the coupling set. You will only need one of these to complete a set for one motor and one lead screw.

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