Automation Parts

S Series Shaft Motor Has Combined Linear Encoders The S series shaft motors from Micromech has combined linear encoders, encoder guides and mechanical systems. Shaft motors are direct-drive linear servomotors that consist of a shaft with laminated magnets and cylindrically wound coils controlled by the flow of current. They are a simple construction that use magnetic circuits consisting of permanent magnets and coils. Characteristics of the motors include precision positioning, high and low constant speed performance. The standard versions of most motors including linear motors is that the circuits are made of magnetic iron, while shaft motors are not. This means that there is no adsorption force between the shaft and forcer (coil), thereby totally eliminating cogging. Shaft motors are capable of high thrust, for example 2340N with a single forcer and 9360N using four forcers (parallel plus tandem drive). The 'S' series is very quiet due to the absence of friction and the...

Combined Starter-Alternator Reduces Petrol Use Dow Corning is helping auto manufacturers and suppliers boost gas mileage and reduce emissions. Dow Corning's technical centres are delivering process engineering, testing and even prototyping to help customers accelerate product development and reduce time to market. Among recent fuel-saving advances is a design for a combination starter-alternator that outperforms the conventional starter and alternator as separate components. The device is at the heart of the 'start-stop' system, which conserves fuel and reduces pollution by automatically shutting off the engine when a vehicle is stationary. The system immediately and silently restarts the motor as soon as a gear is engaged; or in the case of a car with automatic transmission, whenever the driver releases the brake. In starter mode, the belt drive and low inertia of the device mean it starts three-times faster than a conventional starter and with a fraction of the noise....