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NWH-SURELOCK-35MM
Surelock multipoint centre door lock case only
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Surelock multipoint centre door lock case only
In stock
Delivery Information
| Delivery Time Frame | Delivery Information |
| Next Working Day By 1PM | When an order is placed by 3pm for next working day on certain items |
| Standard Delivery | Usually delivered in 2 to 4 working days |
| Delivery Charges | |
| UK Mainland | Prices start at £3.95 for very small items, £6.50 for small, £9.50 for medium and £20 for large/long items |
| Scottish Highlands & Islands, Northern Ireland & Ireland | Prices from £30, please see our delivery page for more info. |
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£30.00
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£25.00
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Description
Surelock multipoint centre door lock case only
Maintaining the security and smooth operation of your external doors is a primary concern for any homeowner or property manager. When a door mechanism begins to fail, the most common point of wear is the central gear box that drives the locking bolts. The Surelock multipoint centre door lock case only provides the ideal solution for restoration projects. By replacing only the faulty centre case instead of the entire multipoint strip, you save significant time and money while restoring your door to its original factory standards.
This replacement component is engineered to fit seamlessly into existing door hardware configurations. It addresses the common issues associated with stiff handles, failed springs, or worn internal gears. With its precision construction, it ensures that your door remains secure against intruders while providing a satisfying, smooth action every time you enter or exit your property.
Understanding the mechanical physics of your door hardware
The internal mechanics of a multipoint lock are subjected to significant physical forces every day. When you lift the door handle to engage the locking bolts, you are applying rotational torque that is converted into linear motion. This force travels through the cam of the Surelock multipoint centre door lock case only to push the hooks or bolts into their respective keeps.
Internal springs within the case are designed to absorb and distribute this tension, ensuring that the handle returns to its horizontal position without sagging over time. If these springs lose their tension, the entire handle assembly may droop, causing unnecessary friction and faster wear of the metal components. Our replacement unit uses high quality, heat treated steel to resist the fatigue that typically occurs after years of constant operation.
Structural integrity is further enhanced by the heavy duty casing that houses these precision parts. By maintaining a rigid housing, the device prevents component flex under the pressure of the handle. This means the gear teeth remain perfectly aligned, preventing the slippage that often leads to a locked or jammed door in cheaper, lower quality alternatives.
Step by step operational workflow for installation
Replacing this component is a straightforward process for anyone comfortable with basic home maintenance. To begin, you must first remove the cylinder screw from the side of the door and withdraw the euro profile cylinder. Once the cylinder is removed, unscrew the handles and set them aside carefully.
Next, remove the screws holding the entire multipoint locking strip to the edge of the door. Carefully pull the strip out of the door channel. You will typically find a set of screws on the faceplate or the side of the gearbox that holds the centre unit in place. By removing these, you can detach the old gearbox from the strip.
After you have removed the failed part, slide the replacement Surelock multipoint centre door lock case only onto the existing locking strip. Ensure that the drive gear connects correctly with the teeth on the strip. Finally, secure the gearbox with the provided fixings, reinstall the strip into the door, and replace the handles and cylinder to complete the job.
Ergonomic health and safety considerations
The design of your door hardware has a direct impact on the ease of use for all occupants. A poorly functioning lock that requires excessive force to operate can lead to repetitive strain for the user. By installing a new, high performance centre case, you ensure that the handle action remains light and responsive.
This is particularly important in commercial or multi occupancy environments where the door is accessed dozens of times per day. Smooth hardware reduces the physical fatigue associated with opening heavy external doors. Furthermore, a properly functioning multipoint lock is essential for fire safety and emergency egress. It ensures that the door does not become a trap during a panic situation, allowing for a swift and safe exit if required.
Commercial ROI and the value of premium hardware
Investing in quality replacement parts is a strategic decision for any property owner. Many people make the mistake of choosing generic, low cost parts that wear out within eighteen months. This leads to a cycle of constant maintenance, wasted labour hours, and repeated material costs.
Choosing this robust model represents a smart long term investment in the security of your premises. By extending the service life of your existing door frame and multipoint strip, you avoid the need for expensive whole door replacements. Reliable hardware acts as a primary deterrent for opportunist intruders. By ensuring your locking mechanism operates perfectly, you safeguard your assets and potentially reduce your insurance premiums due to the enhanced security profile of your home.
Expert tip for buyers: Always measure your backset and centre distance twice before ordering. The backset is the distance from the edge of the door to the centre of the handle spindle. An incorrect measurement will prevent the lock from fitting inside your existing door mortise.
Technical specifications
The following table outlines the critical dimensions for this unit. Please compare these against your existing hardware to ensure full compatibility.
| Feature | Specification |
|---|---|
| Product Type | Multipoint Centre Case Only |
| Lock Centre Distance | 92mm |
| Backset Measurement | 35mm |
| Material | Corrosion resistant steel |
| Operation | Lever operated |
| Compatibility | Universal euro profile cylinders |
| Installation Type | Surface or mortise mounted |
Ensuring compatibility with your existing door
Before proceeding with your order, please verify that your door system is designed for a 92mm centre measurement. This measurement is the distance from the centre of the keyhole to the centre of the square handle spindle. If your current lock has a different measurement, the handle and cylinder will not align with the holes in your door leaf.
Additionally, the 35mm backset is a crucial dimension for the physical location of the lock within the door profile. A backset that is too deep or too shallow will prevent the gearbox from sliding into the prepared cavity. Our team at Doorfit is always here to assist if you have questions regarding the compatibility of this item with your specific brand of multipoint door strip.
We believe that high quality hardware should be accessible and easy to install. By providing a direct replacement for the most common failure point in modern doors, we enable you to manage your home security with confidence. Trust in the durability of this hardware to keep your property protected throughout the seasons. Order your replacement gear box today and enjoy the peace of mind that comes with a perfectly functioning entry system.
Specification
| Guarantee | 12 Months |
|---|---|
| Lock Type | Multipoint |
| Lock Operation | Euro Cylinder |
| Lock Backset | 35 |
| Lock Centres | 92mm |
| Follower Size (mm) | 8 |
| Mechanism | Case Only |
| Door Material Suitability | UPVC / Timber |
| Max Door Thickness (mm) | 65 |
| Forend Finish | Stainless Steel |