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Application example Mounting head for circuit board production

Requirements

Bearing for a high-performance placement head for printed circuit board production with a clock frequency of 18 start/stop movements per second and up to 120 million revolutions within five years. The service life is set at ten years. The bearing arrangement must be preloaded at 70 °C in all directions without clearance so that the components can be assembled precisely.


Solution

Franke special bearing assembly LDB0110. Aluminium (Dispal) is used as material for the inner and outer ring. It has almost the same coefficient of thermal expansion as steel and thus enables constant unit settings over the entire temperature range.


Bearing solution used

Bearing Element Typ LVB (customized)


Advantages

Customer-specific design that meets all requirements with regard to dimensions, material and connection dimensions. The integrated bearing element has a small cross section and enables the customer to achieve a compact, light but nevertheless rigid design. Franke is the only manufacturer worldwide that can meet such requirements.

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