Lockmaster Telephone
WhatsApp Lockmaster
e-mail Lockmaster
Your Cart

Don’t let a faulty door gearbox give you sleepless nights. With our wide selection of genuine lockmaster replacement gearboxes, we’ll make sure you get your door open without any hassle. The door gearboxes are limited to just the central mechanism on your lock. We can assist you in obtaining the correct part by either using our live chat, calling us, or sending an email to ensure that the gearbox is suitable for your door. At Lockmaster, we offer a wide range of replacement gearboxes, including uPVC door gearbox and composite door gearbox.

How Do I Replace the Lockmaster Gearbox?

A gearbox, known as a centre case, is the central locking component of a Multipoint Door Lock. Because this is the most used section of the lock, it is also the most likely part to fail. When people encounter problems with their door locks, they frequently assume that the entire lock has to be replaced. However, this is not the case, as the most typical problems with a Multi-point lock are caused by the gearbox being faulty. Therefore, opting for a gearbox replacement might be the only solution you truly need.

If your multi-point lock has any of the following issues, it is likely that your gearbox has or will have further issues in the future.

  • When moving the handle, the lock does not disengage or engage.
  • The lock’s cylinder appears to be caught on something or is difficult to lock or unlock.
  • The latch in your centre case is stuck open or closed.
  • Excessive movement on your centre case’s hook or deadbolt.
  • Handle feels loose or not sitting in its usual position.

All of the issues above can usually be resolved by moving 3–4 torx screws from the centre box and installing a new gearbox. You won’t even need to acquire a new set of keys because all your old door hardware may still be used.

What Type of Gearbox Do I Need?

The most important element to consider when shopping for a replacement Door Gearbox is the brand. This should be clearly marked on the inside of your door’s long metal strip, such as ERALockmasterGU Fero, or Fullex. Keep in mind that some Winkhaus gearboxes cannot be replaced as they are riveted in position.

The second most important aspect is the lock size, which is commonly a 35/92 or a 45/92. The first measurement is the backset, which is the distance between the front of the lock and the spindle’s centre. The second measurement is the “PZ Centre measurement,” which is the distance between the keyway (keyhole) and the centre of your spindle.

The final crucial point to mention is the types of spindles. If your door handle is in the same position inside and outside, then you have a single spindle (which will have a spring fitted to hold the handle in place). Then again, if you have a handle that is of different heights inside and out, you have a Dual Spindle Gearbox or split spindle gearbox. Because of the extra spindle in the lock due to the additional spindle, they are frequently unsprang (this means that the spring in your door handle keeps it in place).

Door Gearbox for uPVC and Composite Doors

Do you know what type of gearbox you need for your door? We have a range of products to suit your needs, including our uPVC Door Gearbox and Composite Door Gearbox. Although more expensive, composite doors provide a lot of advantages, including a wide selection of colours and high-quality materials. Delivery of our products is available nationwide, and we provide up to a ten-year manufacturer’s warranty on all our products.

uPVC Door Gearbox

Gearboxes for uPVC doors are an integral part of your door locking system. Our door gearboxes will ensure your door operates smoothly with tight, accurate and quite operation. We have a range of backset measurements, including 28mm, 35mm and 45mm. We offer a no-nonsense guarantee on all our products and services, so you can rest assured that your uPVC door gearbox is of the highest quality at the best possible price!

Composite Door Gearbox

If you have a composite door that needs a gearbox, we have just what you need! We offer gearboxes at amazing prices that will fit your composite doors perfectly. Composite doors offer better security, noise reduction, and durability than uPVC doors.

If you’re having trouble locating the correct gearbox for your door, please contact one of our exceptional team members who will gladly assist you.

We Love Feedback