An elastomeric bushing for a bearing. The bushing can, even after installation in the bearing, be pretensioned or calibrated, by displacement of elastomeric material in the interior of the bushing, where the displacement is carried out by different pressing mechanism and tensioning mechanism in the bushing and/or in the surrounding bearing.

A vacuum pump comprises: a ball bearing which supports a rotor; a holding section which elastically holds an outer ring of the ball bearing; and a grease which is filled between the outer ring and the holding section, the grease having a consistency of NLGI No. 1.5 or less.

A guard tube assembly for a drive shaft of a power tool has a guard tube with a tube cross section deviating from a circular shape and having an inner contour and a center. An inner support tube inside the guard tube supports the drive shaft. The inner support tube has a bearing sleeve supported by support elements on the inner contour. The inner contour has a first and a second circumferential section. The first circumferential section has a smallest spacing to the center and the second circumferential section has a largest spacing to the center. The elastic support elements have a contact surface contacting the inner contour and spaced at a contact surface spacing to the center. The contact surface spacing is longer than the smallest spacing of the first circumferential section and shorter than or identical to the largest spacing of the second circumferential section.

A supercharging device, for example an exhaust gas turbocharger, may include a rotor mounted in a housing via an axial bearing. The axial bearing may include an axial bearing disc, a membrane, and a screw connection that secures the axial bearing disc to the membrane through an opening in the membrane. The axial bearing may further include a bush connected to the housing. The membrane may be clamped in between the bush and the housing. An adjusting screw may be inserted into an opening of the bush. The adjusting screw may delimit and/or facilitate an axial movement of the screw connection and the axial bearing disc.

A supercharging device, for example an exhaust gas turbocharger, may include a rotor mounted in a housing via an axial bearing. The axial bearing may include an axial bearing disc, a membrane, and a screw connection that secures the axial bearing disc to the membrane through an opening in the membrane. The axial bearing may further include a bush connected to the housing. The membrane may be clamped in between the bush and the housing. An adjusting screw may be inserted into an opening of the bush. The adjusting screw may delimit and/or facilitate an axial movement of the screw connection and the axial bearing disc.

A center bearing bush unit for a propeller shaft can effectively decrease the amount of large/small displacement that occurs in the propeller shaft during driving of a vehicle. A center bearing bush unit for a propeller shaft includes an inner pipe; an outer pipe disposed on a common axis as the inner pipe at the outside of the inner pipe; a cushion rubber attached between the inner and outer pipes, and having a plurality of voids disposed on the common axis; and a plurality of stoppers attached to the outer circumferential surface of the inner pipe while being spaced apart from the cushion rubber at a predetermined interval.

A center bearing bush unit for a propeller shaft can effectively decrease the amount of large/small displacement that occurs in the propeller shaft during driving of a vehicle. A center bearing bush unit for a propeller shaft includes an inner pipe; an outer pipe disposed on a common axis as the inner pipe at the outside of the inner pipe; a cushion rubber attached between the inner and outer pipes, and having a plurality of voids disposed on the common axis; and a plurality of stoppers attached to the outer circumferential surface of the inner pipe while being spaced apart from the cushion rubber at a predetermined interval.

The present invention relates to a bearing assembly (10) for a drives haft system comprising a frame (12) surrounding an opening (16); a flexible vibration isolator (20) disposed in the opening (16) and a ball bearing (50) is mounted at a central opening (24) of the vibration isolator (20). The ball bearing assembly (10) comprises a spherical cup (40) is nested to a central opening (24) of the vibration isolator (20) and spherically pivoted such that in an adjustment position changing the rotational axis (x) of the ball bearing (50) by a deviation angle (a) when a rotational force is applied.

A bearing structure includes a bearing that supports a propeller shaft, an annular vibration isolating member fitted over the bearing, an outer ring attached to the vibration isolating member and having an outer-peripheral fitting surface, and a bracket attached to a vehicle body and having an inner-peripheral fitting surface that is fitted to the outer-peripheral fitting surface. Both the bracket and the outer ring are formed of an aluminum material. An anodized aluminum layer is formed on at least one of the inner-peripheral fitting surface and the outer-peripheral fitting surface. Because of the above mentioned features, the bearing structure that has a light weight and is inexpensive and productive.

A device for manufacturing bushings faster and for allowing a continuous manufacture process is provided. An elastic material with a bigger cross section area can be assembled between outer and inner sleeves with smaller cross section area. Many bushings can be assembled at the same time in each production cycle. The elastic material can be pressed together in one gripping element and stretched over a second gripping element before gripping and stretching take place.