Measure from the centre of the fixing screw to each end of the cylinder and record the two figures separately.
Euro Cylinders and Compatible Lockcases
Cylinders provide the key-operated part of a compatible lockcase and can often be replaced without changing the full mechanism. The correct pairing depends on cylinder profile, door thickness, lockcase function and the required key or thumbturn operation.
Measure a euro cylinder from the centre fixing screw to each end, recording both dimensions. The external face should not project unnecessarily beyond the door furniture. Compare the complete door lock and latch range when the case is worn as well as the barrel.
Confirm the spindle and cylinder centres before cutting or replacing a lockcase. Match the opening with suitable security door handles, and use correctly rated hinges for the doorset so the latch and bolt meet the keep squarely.
Cylinder Lockcases FAQ's
Yes, when the lockcase works correctly and the replacement cylinder has the same profile and dimensions.
A double cylinder uses a key on both sides. A thumbturn model can be locked and released from inside without a key.
Excessive projection can create a gripping point and looks untidy. Select a split length that sits close to the furniture.
No. The case must have the correct cylinder profile, centres and function for the chosen cylinder.