A set of metal door lock mechanisms, including different parts and sub-assemblies, displayed on a white background.
Gearbox lock measurement guide: Backset and PZ distances.
A set of metal door lock mechanisms, including different parts and sub-assemblies, displayed on a white background.
Gearbox lock measurement guide: Backset and PZ distances.
Technal

Technal Gearbox – Replacement Multipoint Lock Mechanism for Aluminium Doors – 33mm Backset 92mm PZTechnal Gearbox - 33mm Backset - 92mm PZ

£99.99 SKU: HS3947
Order by 2pm for same-day dispatch
Klarna

Pay in 4 installments of [klarna_payment]

Learn more
Eye visibility icon in black, representing monitoring, visibility, or visual deterrence, displayed on a transparent background.

Same-day dispatch on orders before 2pm

The gearbox is the most common part to fail on a Technal multipoint lock — replace just this centre case, not the full strip, and save.Check your backset is 33mm before ordering.

Key benefits
  • For aluminium doors - 33mm backset, 92mm PZ
  • Direct Technal replacement - no door modification needed
  • Restores multipoint operation - check existing model before ordering
Product overview

Technal Replacement Door Lock Gearbox

The Technal door lock mechanism gearbox is designed for aluminium doors commonly found on commercial properties and apartment blocks.

If your Technal multipoint lock has failed, replacing just the gearbox is the most cost effective solution. The centre case re-attaches to your existing locking strip.

Key Measurements

PZ Centres: 92mm

Backset: 33mm

Case height: 240mm

Overall length: 305mm
Delivery & Returns

How much is delivery?

UK Mainland Delivery is £2.99 on all items no matter how many you order!

Northern Ireland, Scottish Highlands, Channel Islands £6.00.

We do not offer International Delivery (Ireland, France, Spain etc).

When will my order be dispatched?

Orders before 3pm (Monday to Friday) are usually dispatched same day but may take up to 24 hours.

When will I receive my item?

We ship on 2 working day courier. Fully Tracked. Tracking will be emailed on dispatch. 

Special order items such as keyed alike locks will take longer to dispatch. Please refer to product description for lead times. 

I haven't received my item?

Please email us your name, order number and date of purchase.

We prefer email as it allows us time to research and respond.

Returns Information

We operate a 30 day refunds and return policy. 

If you change your mind you must return the product back to us within 30 days of delivery

Please include a copy of your invoice and a note stating reason for return. 

Additional keys, locks keyed alike or built to code are non refundable as they are personalised made to order goods.

Any refund, which is due to a fault or other defect, will include a refund of the applicable delivery charges otherwise not. 

It is the buyers responsibility to arrange the return of goods to us. We do not offer a collection service for returning items. 

Items must be returned including original product packaging and accessories.

We reserve the right to refuse any returns that do not comply with this policy.

Please post returns to the following address:

Home Secure (Online)

Unit 5, Brookfield Drive

Liverpool, L9 7AJ

United Kingdom

Frequently Asked Questions

The Technal door lock mechanism gearbox is the central component of a multipoint locking system, responsible for controlling the handle and key operation. It ensures all locking points engage correctly, keeping your door secure and functioning smoothly.

Common signs include a stiff or loose handle, difficulty turning the key, or the door not locking properly. These issues often indicate internal wear and should be addressed promptly. Learn more in Check This Before Your Next Let-In: Is the Door Gearbox Still Fit for Purpose.

No, compatibility depends on measurements such as backset, PZ centres, and the specific design of your existing lock. Always check your current gearbox specifications to ensure the correct replacement.

Yes, if you have basic DIY skills, replacing a gearbox is usually manageable. However, correct alignment is essential for smooth operation, so professional installation may be recommended if you are unsure.

A worn gearbox can lead to complete lock failure, making your door difficult to open or secure. Replacing it early helps maintain security and prevents more serious and costly issues.