Alpha A2307 50mm Keyless & Vertilux 55mm Crown & Drive

The Alpha A2307 Crown & Drive is a tubular motor accessory designed for compatible Alpha 40mm motor installations using either 50mm straight gauge tubing or Vertilux 55mm tubing.

Alpha categorises the A2307 within its Crowns & Drives for 40mm Motors range and specifically identifies these two tube applications.

This makes the A2307 a useful option for both new motor installations and replacement applications where the existing roller tube matches one of the specified configurations.

Suits 50mm Straight Gauge Tubing

The A2307 is designed to suit compatible 50mm straight gauge roller tubing.

When installing a tubular motor, the motor itself sits inside the roller tube. The crown and drive provide the mechanical interface needed between the motor and tube.

Correctly matching these components to the tube is therefore an important part of the installation.

Suits Vertilux 55mm Tubing

Alpha also specifically identifies the A2307 as suitable for Vertilux 55mm tubing.

There is, however, an important fitting requirement.

Alpha advises that when the A2307 is being used with Vertilux 55mm tubing, some tiny peaks on the drive wheel need to be filed off.

According to Alpha, this minor modification should take no more than approximately 30 seconds.

This requirement is specific enough that it should be considered before installation rather than assuming the A2307 installs into the Vertilux tube completely unmodified.

Crown & Drive Function

The crown and drive perform essential mechanical functions within a tubular motor installation.

The drive wheel transfers rotational movement from the motor to the roller tube. As the motor operates, the drive engages with the internal profile of the tube and causes the tube to rotate.

The crown forms another part of the interface between the tubular motor and roller tube.

Together, these components allow the motor to operate correctly within a compatible tube.

For Alpha 40mm Motors

Although this product references 50mm and 55mm tubing, those measurements don’t describe the motor diameter.

Alpha categorises the A2307 as a Crown & Drive for 40mm Motors.

The larger measurements relate to the roller tubes surrounding the motor.

This distinction is important when choosing components because motor size and roller tube size are two separate parts of the compatibility equation.

Replacing an Existing Motor

If you’re replacing an existing blind motor, retain the original crown, drive and any other motor adaptors until you’ve confirmed the replacement components.

The existing components can help identify the tube system and determine which replacement parts are required.

Photographs of the tube end and existing crown and drive can also be useful when matching an installation.

Check Your Roller Tube

Don’t select the A2307 purely because your existing roller tube measures approximately 50mm or 55mm.

Alpha specifically identifies the compatible applications as 50mm straight gauge and Vertilux 55mm tubing.

The tube profile matters as well as its nominal diameter.

If you’re unsure what tube is installed in your blind, use our Match Your Existing Blind Tube to the Correct Crown & Drive guide to compare the dimensions and internal profile.

Key Features

• Genuine Alpha motor accessory
• Product Code: A2307
• Crown and drive for compatible 40mm Alpha motors
• Suits 50mm straight gauge tubing
• Suits Vertilux 55mm tubing
• Minor drive-wheel modification required for Vertilux 55mm
• Suitable for compatible replacement motor installations
• Suitable for compatible new motor installations

Specifications

Brand: Alpha Motors
Model: A2307
Product Code: A2307
Product Type: Crown & Drive
Motor Range: 40mm Motors
Compatible Tube: 50mm Straight Gauge
Compatible Tube: Vertilux 55mm
Vertilux Installation: Tiny peaks on drive wheel require filing
Special Care: N/A
Warranty: N/A

Vertilux 55mm Installation Note

When using the Alpha A2307 with Vertilux 55mm tubing, Alpha specifies that you will need to file some tiny peaks off the drive wheel.

Alpha states that this modification should take no more than approximately 30 seconds.

This modification isn’t specified for the standard 50mm straight gauge tube application.

Important Compatibility Information

The A2307 is specifically listed by Alpha as suitable for 50mm straight gauge and Vertilux 55mm tubing and as part of its Crown & Drive range for 40mm motors.

Don’t assume that every 50mm or 55mm tube uses the same internal profile. Confirm your existing tube before ordering.

FAQs

What is the Alpha A2307?

The A2307 is an Alpha crown and drive for compatible 40mm tubular motor installations.

What tubing does the A2307 suit?

Alpha specifies 50mm straight gauge tubing and Vertilux 55mm tubing.

Does the A2307 fit Vertilux 55mm tubing?

Yes. Alpha specifically lists Vertilux 55mm tubing as compatible.

Does anything need to be modified for Vertilux 55mm?

Yes. Alpha advises filing some tiny peaks from the drive wheel when using it with Vertilux 55mm tubing.

How long does the Vertilux modification take?

Alpha states that filing the small peaks from the drive wheel should take no more than approximately 30 seconds.

Is the A2307 for a 50mm motor?

No. Alpha categorises the A2307 as a crown and drive for 40mm motors. The 50mm measurement refers to the roller tube.

What is the product code?

The Alpha product code is A2307.