Three metal door lock center cases with gearboxes, displayed horizontally, with visible screws and mechanisms.
Diagram illustrating how to measure a Mila uPVC door lock centre case gearbox, showing the "Backset" (A) and "PZ" (B) dimensions for correct fitting.
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Three metal door lock center cases with gearboxes, displayed horizontally, with visible screws and mechanisms.Diagram illustrating how to measure a Mila uPVC door lock centre case gearbox, showing the "Backset" (A) and "PZ" (B) dimensions for correct fitting.

ERA Gearbox with Hook – Replacement Centre Case for uPVC Multipoint Door Lock – Fits ERA Saracen Surelock – 35mm Backset 92mm PZ

Save £10.00
ERASKU: HS2832
Price:
£29.99 £39.99

Save £10.00 — limited stock at this price

Key benefits

  • Replaces ERA Saracen Surelock - 35mm backset, 92mm PZ
  • Hook bolt + deadbolt - restores multipoint lock function
  • Standard ERA dimensions - measure your case before ordering
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Description

ERA Replacement Gearbox with Hook

This ERA centre case gearbox features a hook mechanism and is a direct replacement for ERA, Saracen, Surelock, Laird and Fab & Fix multipoint door locks.

Replacing just the gearbox is far more cost effective than buying a complete new lock. The centre case re-attaches to your existing locking strip.

Key Measurements

The most important measurements are 35mm Backset and 92mm PZ.

This gearbox is non-handed, fitting both left and right-handed doors.

Compatible Brands

Suitable replacement for ERA, Saracen, Surelock, Laird and Fab & Fix multipoint door locks.

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Frequently Asked Questions

An ERA centre case gearbox with hook is the main mechanism in a multi-point locking system that controls the latch, deadbolt, and hook locking points. The hook adds extra security by engaging deeper into the frame when locked.

A 35mm backset refers to the distance from the edge of the door to the centre of the spindle hole. This measurement is essential to ensure the gearbox fits correctly within your existing door setup.

Common signs include a stiff or loose handle, difficulty locking or unlocking the door, or the locking points not engaging properly. Ignoring these issues can lead to complete lock failure. Learn more in The Silent Door Failure: How a Worn Gearbox Can Lead to Complete Lock Breakdown.

No, this gearbox is specifically designed for ERA multi-point locking systems. Always check key measurements such as backset, fixing points, and lock configuration before purchasing.

Yes, with basic DIY knowledge, you can replace the gearbox by removing the door handles and lock strip. However, if you're unsure, it’s best to consult a professional to ensure proper installation.

About the Brand - ERA

ERA is one of the most established and trusted names in UK home security, known for delivering high-performance locks, door hardware, and smart security products that combine reliability with modern innovation. With over 180 years of expertise, ERA has built a reputation for creating security solutions that meet the needs of today’s homeowners—offering exceptional protection, ease of use, and long-term durability.

From multi-point door locks and high-security cylinders to window hardware and smart home security devices, ERA products are rigorously tested and certified to meet leading UK standards. Many items in the ERA range offer features such as anti-snap, anti-bump, and anti-pick technology, ensuring robust defence against common forced-entry methods.

Choosing ERA means investing in proven British security engineering, trusted by professionals and homeowners nationwide. Every product is designed to improve home safety, enhance performance, and deliver peace of mind—making ERA one of the most reliable brands in the HomeSecure range.

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