Genuine Multipoint Gearbox - Key Wind

Product Information

This Fuhr gearbox features a keywind mechanism. Be sure to remove the yellow plastic travel protector before fitting.

Fuhr multipoint door lock gearboxes feature a deadbolt that throws 20mm, except on 25mm and 30mm backset locks, where it throws 14mm. The gearbox measures 220mm x width + 18mm. The latch and deadbolt are both 31mm high, and there is 61mm between the bottom of the latch and the top of the deadbolt. Gearboxes are fixed to faceplates with 3 screws. The distance from the top screw to the middle screw is 91mm, and the distance from the middle to the bottom screw is 108mm.

Fuhr locks feature a ball bearing and spring pre-fitted. There is a tiny notch on the sliding internal strip that the ball bearing engages (under spring tension) and gives a more positive locking feel when the handle is operated. If you try a lock without this spring and ball bearing fitted, you'll notice the difference. Some replacement gearboxes on the market are sold without the ball bearing and spring, but all of Duffells' replacement Fuhr gearboxes come with these pre-fitted for a direct swap.

When replacing an existing Fuhr multipoint lock or gearbox, you may find that the latch differs. This can cause problems when the latch locates in the keep. Old versions of Fuhr multipoint lock gearboxes had a latch that was 28mm high, whereas newer versions are 33mm high. If the latch on the old lock is not damaged, it is possible to remove it by undoing the allen key bolt in the old gearbox, removing it, and re-using it in the new lock.

We stock a range of associated products for Fuhr 855 - Key Wind gearboxes, including multipoint door locks, keeps, spindles, handles, and accessories.

Key Features:

• Deadbolt Throw: 20mm (14mm for 25mm and 30mm backset)
• Gearbox Dimensions: 220mm x width + 18mm
• Latch and Deadbolt Height: 31mm
• Screw Fixing: 3 screws with specific measurements for installation
• Pre-fitted Components: Ball bearing and spring for enhanced locking feel

Replacement Notes:

• Ensure compatibility of latch height when replacing gearboxes.
• Old latches (28mm) can be reused in newer models (33mm) if undamaged.

Explore our complete range of Fuhr 855 - Key Wind gearboxes and related products to enhance your security solutions!

Product Specification

Manufacturer: Fuhr

Backset: Select from drop-down - How do I measure the backset?

Centres PZ: 92mm - How do I measure the centres?

Case Height: 194mm

Case Width: Backset + 19mm

Copy/Genuine: Genuine

Cylinder Type: Euro

Handing: Not Handed

Main Gearbox: Latch & deadbolt

Spindle: Single 8mm

Operation: Key Wind - What is the operation?

Packaging: Supplied in singles

Measuring Guidelines:

To ensure accurate measurements for your Fuhr gearbox, follow these guidelines:

Backset Measurement:

1. Measure from the edge of the door to the center of the keyhole.
2. This distance is your backset measurement.

Centres PZ Measurement:

1. Measure from the top of the keyhole to the center of the handle hole.
2. This distance is your PZ measurement.

Operation Explanation:

The Key Wind operation refers to the mechanism that allows the lock to be engaged or disengaged using a key. This type of operation is designed for enhanced security and ease of use, providing a reliable locking solution for your doors.

Explore our range of Fuhr products to find the perfect fit for your security needs!