Abstract: A roller for a roller bearing has a first end surface and a second end surface and a rolling surface between the first and second end surfaces. The first end surface has an at least partially ground profile having a non-constant curvature such as a logarithmic profile. Also, an assembly including a grinding tool and a roller with an end surface having a ground non-constant curvature.

Abstract: A cage segment is for a rolling-element bearing cage, particularly for large rolling-element bearings. The cage segment includes a first side element and a second side element that are connected by a first bridge and a second bridge. At least one pocket is formed between the first and second bridges which is suitable for receiving at least one rolling element. The cage segment is manufactured from sheet metal.

Abstract: A roller for a roller bearing has a first end surface and a second end surface and a rolling surface between the first and second end surfaces. The first end surface has an at least partially ground profile having a non-constant curvature such as a logarithmic profile. Also, an assembly including a grinding tool and a roller with an end surface having a ground non-constant curvature.

Abstract: A cage segment is for a rolling-element bearing cage, particularly for large rolling-element bearings. The cage segment includes a first side element and a second side element that are connected by a first bridge and a second bridge. At least one pocket is formed between the first and second bridges which is suitable for receiving at least one rolling element. The cage segment is manufactured from sheet metal.

Abstract: A bearing assembly includes first and second rolling-element bearings each having first and second bearing rings, a raceway and a flange element at both ends of the raceways. Two of the flange elements are formed on a common flange body, and the flange body is axially pressed onto cylindrical mounting surfaces of the first bearing rings of the first and second rolling-element bearings and held in place by a press fit.

Abstract: A bearing assembly includes first and second rolling-element bearings each having first and second bearing rings, a raceway and a flange element at both ends of the raceways. Two of the flange elements are formed on a common flange body, and the flange body is axially pressed onto cylindrical mounting surfaces of the first bearing rings of the first and second rolling-element bearings and held in place by a press fit.

Abstract: A bearing ring for a rolling-element bearing including an axially extending outer surface, two radially extending side surfaces, an inner surface configured to at least partially contact a rolling element and at least one radially extending recess in the inner surface that is configured to work together with a lifting tool to allow the bearing ring to be lifted by the lifting tool. Also a method of lifting a bearing ring having such a recess.

Abstract: A lubricating system for a bearing includes a lubricant supplying system having a first pumping device configured to introduce a first quantity of lubricant into the bearing, a lubricant disposal system including a second pumping device configured to remove a second quantity of lubricant from the bearing, and a controlling device configured to activate the first pumping device and the second pumping device interdependently with each other.

Abstract: A bearing ring for a rolling-element bearing including an axially extending outer surface, two radially extending side surfaces, an inner surface configured to at least partially contact a rolling element and at least one radially extending recess in the inner surface that is configured to work together with a lifting tool to allow the bearing ring to be lifted by the lifting tool. Also a method of lifting a bearing ring having such a recess.

Abstract: A lubricating system for a bearing includes a lubricant supplying system having a first pumping device configured to introduce a first quantity of lubricant into the bearing, a lubricant disposal system including a second pumping device configured to remove a second quantity of lubricant from the bearing, and a controlling device configured to activate the first pumping device and the second pumping device interdependently with each other.

Abstract: In a method for managing access control with locking units, particularly locks, and electronic keys, wherein access authorizations are stored and managed in a central processor, the keys are programmed with authorization information for a pregiven selection of locking units as a function of the respective access authorization, the authorization information is wirelessly sent from a key to a locking unit in the event of an access request, and the access authorization is determined in the locking unit as a function of the received authorization information, the programming of a key comprises the sending of the authorization information via a wireless telecommunication network to a wireless mobile telecommunication device and the transmitting of the authorization information received by the mobile telecommunication device to a memory of the key.

Abstract: In a method for managing access control with locking units, particularly locks, and electronic keys, wherein access authorizations are stored and managed in a central processor, the keys are programmed with authorization information for a pregiven selection of locking units as a function of the respective access authorization, the authorization information is wirelessly sent from a key to a locking unit in the event of an access request, and the access authorization is determined in the locking unit as a function of the received authorization information, the programming of a key comprises the sending of the authorization information via a wireless telecommunication network to a wireless mobile telecommunication device and the transmitting of the authorization information received by the mobile telecommunication device to a memory of the key.