Hard disk motors
Everyone is familiar with computer hard disks, but only very few people know that the heart of a hard disk is a small electronically commutated DC motor known as a spindle motor (hard disk motor). This motor carries the storage disks, which it rotates directly around its own axis (spindle). The read/write heads flying above the disks can then retrieve the digital information.
The spindle motor offers superior performance in terms of:
- extremely quiet running and high running accuracy
- high rotational speed, up to 15000 rpm
- low acoustic noise level
- long working life due to lack of mechanical wear
- low electric power consumption
Spindle motors are used in all kinds of HDDs, such as:
- 3.5" HDDs for PCs, servers (professional storage systems), consumer electronics, e.g. video games consoles, digital video recorders
- 2.5" HDDs for laptops, servers, notebooks, consumer electronics, e.g. mp3 music players, digital video recorders, navigation systems
