A roller bearing ring having at least one raceway. The raceway provides a first and a second axial end and a diameter of the first axial end and a diameter of the second axial end are either both greater than the mean diameter of the raceway or both less than the mean diameter of the raceway. The roller bearing ring includes a projection, which is on the same side of the bearing ring as the raceway and which limits the raceway without being a part of the raceway.

A roller bearing ring having at least one raceway. The raceway provides a first and a second axial end and a diameter of the first axial end and a diameter of the second axial end are either both greater than the mean diameter of the raceway or both less than the mean diameter of the raceway. The roller bearing ring includes a projection, which is on the same side of the bearing ring as the raceway and which limits the raceway without being a part of the raceway.

A method and apparatus for bearing replacement in an electrical machine is provided. An electrical machine is provided, comprising a stator with at least one stator winding, the stator defining a centre axis, and a rotor comprising magnetic material and having a first end and a second end. The electrical machine further comprises at least one bearing including a first bearing and supporting the rotor in an operational position in relation to the stator allowing the rotor to rotate in relation to the stator about the centre axis, and at least one support element including a first support element and adapted to support the rotor in relation to the stator such that the at least one support element in a support position supports the rotor centred about the centre axis, thereby allowing replacement of the first bearing, the support element in the support position being at least partly positioned between the rotor and the stator in a direction perpendicular to the centre axis.

A method of assembling a bearing assembly includes fitting a first ring onto a first end of a gear shaft. A second ring is fed into a slot in the first ring. The second ring is driven through the slot in the first ring. The second ring is positioned within the first ring. The second ring is positioned about the gear shaft such that a first end and a second end of the second ring are covered by a solid portion of the first ring.

Installation of a bushing into the shift cable end of an automatic transmission, without replacing the entire shift cable end, is accomplished via methods and specialized tools that do not divert the force applied by compressive tools away from the non-load-bearing surfaces of the bushing and shift cable end, and maintain the axial alignment of the bushing with the shift cable end during installation, thus preventing deformation of the shift cable end and bushing during installation, and ensuring the proper coupling of the shift cable end and shift lever. In particular embodiments, a shift cable end protective member is secured to the shift cable end, a bushing installation member is inserted into the bushing, through the shift cable end and into the protective member, and a compressive force is applied simultaneously to the protective member and installation member, thus pressing the bushing into place within the shift cable end. The protective member and installation member work in tandem to divert the compressive force away from the shift cable end, average the compressive force across the bushing, and maintain the alignment of the bushing with the shift cable end as the bushing is pressed into the shift cable end.

An apparatus and method for removing or installing a bearing unit at the downwind end of the bedplate in wind turbine uses a frame erected at the downwind end of the bedplate. The frame has cradle members located such that the bearing unit can be slid out of the bedplate and supported on the cradle members, or supported on the cradle members and pushed into the bedplate.

Installation of a bushing into the shift cable end of an automatic transmission, without replacing the entire shift cable end, is accomplished via a method that does not require the use of compression tools and maintains the axial alignment of the bushing with the shift cable end during installation, thus preventing deformation of the shift cable end and bushing during installation, and ensuring the proper coupling of the shift cable end and shift lever. In one particular embodiment of the invention, the bushing may be installed by radially compressing the leading shoulder of the bushing and passing the bushing through the shift cable end, then releasing the leading shoulder of the bushing so that it engages the shift cable end and secures the bushing in place. This can be accomplished by pressing a bushing into the cavity of a tool having a cylindrical member with a first side and a second side, a cavity within the first side of the cylindrical member, and an elongated member extending perpendicularly from the second side of the cylindrical member, inserting said tool into one end of the shift cable end and passing the leading shoulder of the bushing beyond and through the shift cable end, thereby releasing the leading shoulder of the bushing to expand and secure the bushing.

The invention relates to a method for performing up-tower maintenance on a gearbox bearing of a wind turbine. In particular, a method for performing up-tower maintenance on a gearbox of a wind turbine is disclosed. The gearbox has at least one bearing with an outer race and an inner race that rotates with respect to the outer race. The method includes forming a through-hole in a front cover of the gearbox, the front cover being stationary with respect to an axis of rotation of the bearing. The method also includes forming a recess in the outer race of the bearing. Further, the method includes inserting a connecting member through the through-hole and the recess so as to prevent movement of the outer race of the bearing with respect to a torque arm of the gearbox.

An apparatus and method for removing or installing a bearing unit at the downwind end of the bedplate in wind turbine uses a frame erected at the downwind end of the bedplate. The frame has cradle members located such that the bearing unit can be slid out of the bedplate and supported on the cradle members, or supported on the cradle members and pushed into the bedplate.

A method for producing a shaft, in particular a balance shaft, crankshaft and the like, having at least one substantially annular bearing seat and at least one unbalance portion. The method includes the steps: provision of a shaft blank; formation of the at least one unbalance portion and of at least two opposite bearing seat side members by a forming process; and deformation of the at least two opposite bearing seat side members by a shell tool such that the bearing seat side members are bent together, whereby the at least one substantially annular bearing seat is formed.