Nitrogen is the first member in Group 15 (VA) of the periodic table. The periodic table is a chart that shows how chemical elements are related to one another. Nitrogen is in a family group named after itself. Other elements in the nitrogen family arephosphorus, arsenic, antimony,andbismuth...
GREASE LUBRICATED ROLLING ELEMENT BEARING COMPRISING SOLID LUBRICANT-CONTAINING COATINGPROBLEM TO BE SOLVED: To prolong the service life of a bearing and grease by coating a solid lubricant-containing coating for reducing the operating temperature of the cage and/or bearing. ;SOLUTION: A cage is ...