Abstract: A device for the explosion protection of electric motors or similar electrical devices such as pumps, in which the motor has a protective housing and works together with an interconnected sensor accommodated in a separate protective housing. A favorable construction is achieved in that the motor protection housing and the sensor protection housing are configured for protection classes of different levels, the lower protection class being provided for the motor protection housing, and the higher protection class being provided for the sensor protection housing, and the protective device being provided for the lower protection class.

Abstract: The invention relates to a bearing assembly of a drive shaft, comprising: an anti-friction bearing, which supports the drive shaft in a housing; an inner ring that is fixed to the shaft; and an outer ring that is mounted so that it can slide in relation to the housing. The adjustment between the outer ring and the slide bearing is selected in such a way that the outer ring revolves more slowly than the shaft in relation to the housing when the shaft bearing is subjected to a revolving radial load.

Abstract: A device for the explosion protection of electric motors or similar electrical devices such as pumps, in which the motor has a protective housing and works together with an interconnected sensor accommodated in a separate protective housing. A favorable construction is achieved in that the motor protection housing and the sensor protection housing are configured for protection classes of different levels, the lower protection class being provided for the motor protection housing, and the higher protection class being provided for the sensor protection housing, and the protective device being provided for the lower protection class.

Abstract: The invention relates to a rolling bearing arrangement for an electromotor having a rotationally symmetrical rotor arranged rotatably inside a stator, there being provided for rotationally bearing the rotor. At least one standard rolling bearing that has an outer race which is arranged in a bearing seat in a fixed position relative to the stator and which cooperates via a rolling body arrangement with an inner race arranged on a shaft of the rotor. The bearing seat is lined with an insulation arrangement in order to avoid a flow of current between stator and rotor, the insulation arrangement having a thin, sheet-type semifinished product having insulation material resistant to the radial pressure force of the bearing.

Abstract: The invention relates to a rolling bearing arrangement for an electrometer that essentially comprises a rotationally symmetrical rotor (2) arranged rotatably inside a stator (1), there being provided for rotationally bearing the rotor (2) at least one standard rolling bearing (3) that has an outer ring (5) which is arranged in a bearing seat (4) in a fixed position relative to the stator (1) and which cooperates via a rolling body arrangement (6) with an inner ring (8) arranged on a shaft (7) of the rotor (2), the bearing seat being lined with an insulation arrangement in order to avoid a flow of current between stator and rotor, specifically the bearing seat (4) of the outer ring (5) is lined with the insulation arrangement (9, 10a, 10b), the insulation arrangement having a thin, sheet-type semifinished product having insulation material resistant to the pressure of the radial force of the bearing.