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Tolerances can be as tight as five microns and around 80% of its turned parts require some sort of milling operation. Typical components include armatures, bearing races, spindles, connectors and parts for power steering units and diesel pumps. These are machined in batch sizes between 100 and 30,000.

The new Citizen M20 sliding head machine adds heavier milling capability to the sliding head section of 10 CNC lathes which run roundthe-clock, seven days a week.

One new component on the M20 is an electrical cable connector for a Formula One motor-sport client.

Required in a batch of 100,000, these 15mm diameter by 10mm long components are produced from solid aluminium bar and have a 10mm diameter through bore. The connectors require a relief form machined around the periphery of the three main bayonet fixings.

These features can only be machined using tools located in the M20's lower turret.

Tel. 020 8905 6933