Alpha A2315 49mm Hollands Crown & Drive

The Alpha A2315 Crown & Drive is a tubular motor accessory designed for compatible installations using 49mm Hollands roller tube.

Alpha categorises the A2315 within its Crowns & Drives for 40mm Motors range and specifically identifies the corresponding tube application as 49mm Hollands.

This provides a clearly identified crown and drive option for customers installing or replacing a compatible Alpha 40mm tubular motor in an existing Hollands roller tube system.

Designed for 49mm Hollands Tube

Alpha’s specified application for the A2315 is:

Suits 49mm Hollands.

This means the A2315 is intended to provide the mechanical interface between a compatible Alpha 40mm tubular motor and the corresponding 49mm Hollands roller tube.

Correctly matching the crown and drive to the tube is important because roller tubes can use different internal profiles even where their nominal diameters are similar.

For Alpha 40mm Motors

Alpha lists the A2315 under Crowns & Drives for 40mm Motors.

The measurements associated with the product refer to two different components.

The 40mm designation refers to the compatible Alpha motor range, while 49mm refers to the Hollands roller tube.

The tubular motor sits inside the larger roller tube, with the crown and drive forming the mechanical interface between them.

What Does the Crown & Drive Do?

A tubular motor needs to transfer its rotational movement to the surrounding roller tube.

The drive engages with the internal profile of the tube and transfers the motor’s rotation. When the motor turns, the correctly matched drive causes the roller tube to rotate.

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

Together, these components allow the compatible motor and tube to operate as a complete blind drive system.

Replacing an Existing Motor

The A2315 may be required when replacing a motor in an existing blind fitted with 49mm Hollands tubing.

When removing an existing tubular motor, retain the original crown and drive until you’ve confirmed the correct replacement configuration.

Existing components can provide useful information when identifying the original installation. Look for moulded product codes, numbers or other identifying marks.

It’s also useful to take a clear photograph looking directly into the end of the roller tube while the motor has been removed.

Confirm the Hollands Tube Profile

Don’t select an A2315 solely because an existing tube measures approximately 49mm.

Alpha specifically identifies this crown and drive as suitable for 49mm Hollands.

Another roller tube with a similar nominal diameter could have a different internal profile and require a different crown and drive.

Correct identification should therefore consider the tube dimensions, internal profile and tube system.

Matching Your Existing Blind Tube

If you’re unsure whether your existing blind uses the compatible Hollands tube, use our Match Your Existing Blind Tube to the Correct Crown & Drive guide.

For the most useful comparison, collect:

• Inside diameter of the roller tube
• Clear photograph looking directly into the tube
• Photograph of the existing crown
• Photograph of the existing drive
• Existing motor model or product code
• Any identifying markings on the components

This provides much better information for matching replacement components than relying on the approximate tube diameter alone.

Key Features

• Genuine Alpha motor accessory
• Product Code: A2315
• Crown and drive combination
• Designed for compatible Alpha 40mm tubular motors
• Suits 49mm Hollands roller tube
• Provides the mechanical motor-to-tube interface
• Suitable for compatible replacement installations
• Suitable for compatible new motor installations

Specifications

Brand: Alpha Motors
Model: A2315
Product Code: A2315
Product Type: Crown & Drive
Motor Range: 40mm Motors
Compatible Tube: 49mm Hollands
Special Care: N/A
Warranty: N/A

Important Compatibility Information

Alpha specifically identifies the A2315 as suitable for 49mm Hollands and categorises the product within its Crown & Drive range for 40mm motors.

The 49mm measurement refers to the roller tube, not the motor diameter.

Don’t assume compatibility with another nominal 49mm tube unless its profile and application have been confirmed.

FAQs

What is the Alpha A2315?

The A2315 is an Alpha crown and drive for compatible 40mm tubular motor installations.

Which roller tube does the A2315 suit?

Alpha specifically identifies it as suitable for 49mm Hollands.

Is the A2315 for Alpha 40mm motors?

Yes. Alpha categorises it under Crowns & Drives for 40mm Motors.

Is the A2315 for a 49mm motor?

No. The 49mm measurement refers to the Hollands roller tube. The motor range is 40mm.

Will the A2315 fit every 49mm roller tube?

Don’t assume so. Alpha specifically identifies the application as 49mm Hollands.

How can I check my existing roller tube?

Measure the tube and take a clear photograph looking directly into the end so its internal profile can be compared with the required fitting.

What is the product code?

The Alpha product code is A2315.