Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are configured with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.

Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are configured with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.

Abstract: A cooling system includes a refrigerant compressor and a first operating medium, which provides a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium to a value between 15% by weight and 50% by weight.

Abstract: A Hybrid rolling bearing includes an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The outer raceway and the inner raceway are made from bearing steel, having a first surface RMS roughness Rq1. The rolling elements are made from a ceramic material and have second surface RMS roughnesses Rq2,i. At least one of the rolling elements has an increased surface RMS roughness Rq2,N, which is significantly higher than the RMS roughnesses Rq2,i, of the remaining rolling elements. The hybrid rolling bearing can be installed within a refrigerant compressor.

Abstract: A Hybrid ball bearing including an outer raceway, an inner raceway, and a plurality of balls arranged between the inner raceway and the outer raceway. The outer raceway and the inner raceway are made from bearing steel and have a first surface RMS roughness Rq1. At least one ball of the plurality of balls is made from a ceramic material and has a second surface RMS roughness Rq2. In a mint condition, the roughness of the raceways Rq1 is 2 to 5 times higher than the roughness Rq2 of the at least one ball, as well as a refrigerant compressor comprising such a hybrid ball bearing.

Abstract: Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are designed with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.

Abstract: A cooling system includes a refrigerant compressor and a first operating medium, which provides a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium to a value between 15% by weight and 60% by weight.

Abstract: A cooling system includes a refrigerant compressor and a first operating medium, which provides a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium to a value between 25% by weight and 80% by weight.

Abstract: A cooling system includes a refrigerant compressor and a first operating medium, which includes a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium so that a second lubrication oil enriched operating medium is provided by the oil separator, the provided second operating medium having at least in a second operating state a viscosity ratio of ?>1.

Abstract: A hybrid roller bearing having an inner raceway and an outer raceway and a plurality of rollers arranged therebetween. The inner raceway and the outer raceway are made from bearing steel and have a first surface RMS roughness Rq1. At least one roller is made from a ceramic material and has at least at the roller raceway a second surface RMS roughness Rq2. The roughness of the raceways Rq1 is 1.2 to 4 times higher than the roughness Rq2 of the at least one roller, as well as a refrigerant compressor with such a hybrid roller bearing.

Abstract: A cooling system includes a refrigerant compressor and a first operating medium, which provides a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium to a value between 25% by weight and 80% by weight.

Abstract: A cooling system includes a refrigerant compressor and a first operating medium, which includes a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium so that a second lubrication oil enriched operating medium is provided by the oil separator, the provided second operating medium having at least in a second operating state a viscosity ratio of K>1.

Abstract: A cooling system includes a refrigerant compressor and a first operating medium, which provides a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium to a value between 15% by weight and 50% by weight.

Abstract: A cooling system includes a refrigerant compressor and a first operating medium, which provides a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium to a value between 15% by weight and 60% by weight.

Abstract: An angular contact ball bearing includes an outer ring having an outer diameter D and a first rolling surface and an inner ring having an inner diameter d and a second rolling surface, and no more than one row of balls between the first rolling surface and the second rolling surface, each of the balls having a diameter Dw. The diameter Dw of the balls, the outer diameter D of the outer ring, and the inner diameter d of the inner ring satisfy the relationship: 2 ? D w D - d > 0.7 .

Abstract: Embodiments relate to a rolling-element bearing comprising at least one outer ring (2) and at least one inner ring (3). Between the same a plurality of rolling elements (4) are arranged to support the inner ring (3) rotatably with respect to the outer ring (2). The outer ring (3) comprises at least one raceway (5, 7) more for the plurality of rolling elements (4) than the inner ring (3).

Abstract: A lubricant supply system includes first and second tanks, each including an internal volume that is divided into a first portion and a second portion. The first portion of the internal volume of the first tank and the first portion of the internal volume of the second tank are configured to alternate supplying a liquid refrigerant to a machine. A pump is in fluid communication with the second portion of the internal volume of the first tank and the second portion of the internal volume of the second tank. The pump is configured to vary a pressure of a gas in the second portion of the internal volume of the first tank and the second portion of the internal volume of the second tank.