BALL BEARING

摘要

The invention relates to movable bearing devices which can be used for transport and mechanical engineering and for furniture production etc. The scope of the inventive ball bearing is substantially extended by using a unit for fixing and adjusting said bearing with respect to a floor with the aid of an annular plug which is displaceable with respect to a body. Different methods for connecting and fixing said plug to the body, namely threaded joint and in the form of a pneumatic cylinder and the use of a bearing rotatable thrust having spherical surface contacting with the plug make it possible to carry out various efficient variants of the embodiment of said ball bearing and the operation thereof.