Abstract: A method of forming a bearing ring having improved hardness is disclosed herein. The method generally includes a duplex hardening process in which the bearing ring is first subjected to a heat treatment. After the heat treatment process, the bearing ring undergoes a nitriding treatment in predetermined portions, including at least a raceway and a cage pilot surface.

Abstract: A method of forming a bearing ring having improved hardness is disclosed herein. The method generally includes a duplex hardening process in which the bearing ring is first subjected to a heat treatment. After the heat treatment process, the bearing ring undergoes a nitriding treatment in predetermined portions, including at least a raceway and a cage pilot surface.

Abstract: An oil pump having a pump housing with a suction-side inlet and with a pressure-side first outlet, which is coupled to a first pump chamber, and with a pressure-side second outlet, which is coupled to a second pump chamber having a first pump rotor which is situated in the first pump chamber so as to be rotatable about a first axis, and having a second pump rotor which is situated in the second pump chamber so as to be rotatable about a second axis, wherein the pump rotors are arranged in a plane, oriented substantially perpendicular to the axes of the pump housing and are coupled by way of an external circumferential toothing.

Abstract: An oil pump having a pump housing with a suction-side inlet and with a pressure-side first outlet, which is coupled to a first pump chamber, and with a pressure-side second outlet, which is coupled to a second pump chamber having a first pump rotor which is situated in the first pump chamber so as to be rotatable about a first axis, and having a second pump rotor which is situated in the second pump chamber so as to be rotatable about a second axis, wherein the pump rotors are arranged in a plane, oriented substantially perpendicular to the axes of the pump housing and are coupled by way of an external circumferential toothing.

Abstract: The angular ball bearing assembly for supporting a rotatable shaft with gears has two sets of ball bearing members where the ball bearing member located adjacent the gears has an inner raceway formed integrally with the shaft. By forming the inner raceway directly on the shaft a reduction in friction is achieved compared to conventional tapered roller bearings.

Abstract: A bearing arrangement for a shaft (1) in a sleeve (2) which concentrically surrounds said shaft (1) should preferably be used for a water pump, with the bearing arrangement having two cylindrical roller or needle rings (3) which roll directly on the inner periphery of the sleeve (2) and on the outer periphery of the shaft (1). Arranged between said two cylindrical roller or needle rings (3) is a ball ring which rolls in a running groove (13) on the sleeve (2) and a running groove (14) on the shaft (1). The spherical rolling bodies (12) of said ball ring (11) form, together with the running grooves (13 and 14) of the sleeve (2) and of the shaft (1), a four-point bearing.