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Switchguard Surelock Points Drive System

Improve reliability and decrease maintenance time with Surelock Points Drive System

No matter how digital the rail way becomes, there will always be the need to physically switch the direction of the rail. A Digital Railway can’t exist without Points machines.

Together the unique technology of Siemens Surelock points drive system and Linear Back Drive provides greater efficiency, reliability and safety, at lower cost – benefits that can be enjoyed by railways around the world.

Reliability of switching the rail is an absolute must to ensure that passengers are safely transported to their chosen destination. The railway infrastructure is constantly becoming busier meaning that points machines are expected to operate more regularly. Furthermore the variations in turnouts have increased and need to be switched in a secure manner.

A winning combination

Surelock & Linear Back Drive

The standalone Surelock points drive is suitable for A to C turnouts. For longer D to G turnouts, there’s Siemens Surelock plug-coupled Linear Back Drive. This combines the same fail-safe dual drive and detection, with a unique linear drive that has significant advantages.


The Surelock system only requires independent adjustment of each back drive. The Linear Back Drive also replaces traditional stretcher bars with a dual drive, and provides detection on both rails.


With the Linear Back Drive, adjustments to the gauge and drive are carried out using just two spanners within a dust-free enclosure, improving reliability and reducing set up time.


All mechanical connections between the Surelock points drive, the Linear Back Drive and the running rail are articulated, to allow for linear rail expansion and horizontal deflection.

What makes the Surelock Points Drive System different?

The Surelock has a double drive directly connected to the switch rail, which adds reliability as there is more points of contact with the rail than other points machines

The dual drive eliminates the need of a stretcher bar as the drives move the rail blades, 

The detection rods operate contacts within Surelock providing independent fail-safe physical detection. 

All the modules are plug coupled, and can be removed and replaced in under nine minutes and has a 15 minute “Meantime to repair”. Combined with a motor that’s maintenance-free within its lifetime, this means Surelock provides optimum availability at minimum cost. 

Provides attachment interfaces for a condition monitoring system

Surelock is IP67 rated and can be installed in the 4 foot or 6 foot application. The low-profile casing contains four individually replaceable modules: the motor, drive, control and escapement.

Setting Points Reliably

Switchguard SURELOCK Point Drive System