Crossed roller bearing steel stages offer all of the advantages of ball bearings with higher load capacity and higher stiffness. This is a consequence of replacing the point contact of a ball with the line contact of a roller. Due to the averaging characteristics of line contacts, angular and linear deviations are generally below those found in ball bearings. However, crossed-roller bearings require more care during manufacture and assembly, resulting in higher costs. Crossed-roller bearings are also more sensitive to contamination because they are less effective at pushing foreign particles away from contact with the guideways.

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3207. Any city, county, or city and county charter or, in the absence of a charter provision, the governing body of any local agency and any agency not subject to Section 19251 by establishing rules and regulations, may prohibit or otherwise restrict the following:

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(a) Officers and employees engaging in political activity during working hours.(b) Political activities on the premises of the local agency.(Added by Stats. 1976, Ch. 1422.)

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Crossed roller bearing steel stages offer all of the advantages of ball bearings with higher load capacity and higher stiffness. This is a consequence of replacing the point contact of a ball with the line contact of a roller. Due to the averaging characteristics of line contacts, angular and linear deviations are generally below those found in ball bearings. However, crossed-roller bearings require more care during manufacture and assembly, resulting in higher costs. Crossed-roller bearings are also more sensitive to contamination because they are less effective at pushing foreign particles away from contact with the guideways.