Genuine Multipoint Gearbox - Automatic Locking

Product Overview: Fuhr Gearbox with Keywind Mechanism

This Fuhr gearbox is designed with a keywind mechanism, ensuring secure and reliable operation. Before installation, remember to remove the yellow plastic travel protector.

Specifications:

• Deadbolt Throw: 20mm (14mm for 25mm and 30mm backset locks)
• Gearbox Dimensions: 220mm x (width + 18mm)
• Latch and Deadbolt Height: 31mm
• Distance Between Latch and Deadbolt: 61mm
• Screw Fixing: 3 screws; distances:
  • Top to middle screw: 91mm
  • Middle to bottom screw: 108mm

Features:

Fuhr locks come with a pre-fitted ball bearing and spring, enhancing the locking feel when operated. This feature is crucial for a positive locking experience. Be cautious of replacement gearboxes that may lack these components; all Duffells' replacement Fuhr gearboxes include them for seamless installation.

Latch Compatibility:

When replacing an existing Fuhr multipoint lock or gearbox, note that latch heights may vary. Older models feature a 28mm high latch, while newer versions have a 33mm high latch. If the old latch is intact, it can be reused by unscrewing the allen key bolt in the old gearbox.

Associated Products:

We offer a comprehensive range of products for Fuhr 855 - Key Wind gearboxes, including:

• Multipoint door locks
• Keeps
• Spindles
• Handles
• Accessories

Locking and Unlocking Instructions:

To Lock the Door:

1. Close the door to automatically engage the latch.
2. Turn the key to throw and engage the locking points.

To Unlock the Door:

1. Turn the key to unlock by "unwinding" the locking points.
2. A further quarter turn will retract the latch.

Latch Reversal:

To reverse the latch, simply undo the screw located on the side of the lock case adjacent to the latch. Remove the latch, reverse it, reinsert, and replace the screw.

This Fuhr gearbox is engineered for durability and ease of use, making it an excellent choice for your multipoint locking needs.

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 the Backset

To measure the backset, you need to determine the distance from the edge of the door to the center of the keyhole. Use a tape measure for accuracy. This measurement is crucial for ensuring that your lock fits properly within the door frame.

Measuring the Centres

The centres measurement refers to the distance between the keyhole and the handle hole. For a PZ measurement of 92mm, measure from the center of the keyhole to the center of the handle hole. This ensures that both components align correctly for optimal functionality.

Key Wind Operation

The key wind operation involves using a key to engage the locking mechanism. When the key is turned, it activates the latch and deadbolt, securing the door. This type of operation is known for its reliability and ease of use, making it a popular choice for multipoint locking systems.