The present invention relates to a grease injection nipple coupled to a grease pipe such that the same can function as an opening/closing valve with regard to the corresponding grease pipe, the grease injection nipple being pushed against a nipple of a grease supply target and coupled thereto or separated therefrom. The grease injection nipple according to the present invention comprises a push body, a check valve, a nipple coupling portion, and a valve activation portion. The valve activation portion may operate such that, when the push body makes a primary movement in the forward direction, the check valve is opened and, when the push body makes a secondary movement in the forward direction after external force for the primary movement of the push body is released, the check valve is closed.

A guide rail oiling tool includes: a sliding body, which is capped on a guide rail and slidable along the guide rail, and has an inner side surface facing a surface to be oiled of the guide rail, a shape of the inner side surface being matched with a shape of the surface to be oiled of the guide rail; an oil inlet disposed on the sliding body; and an oiling groove in communication with the oil inlet, disposed on the inner side surface of the sliding body and surrounding the surface to be oiled of the guide rail, so that the oiling groove applies oil to the surface to be oiled of the guide rail when the sliding body is sliding.

A guide rail oiling tool includes: a sliding body, which is capped on a guide rail and slidable along the guide rail, and has an inner side surface facing a surface to be oiled of the guide rail, a shape of the inner side surface being matched with a shape of the surface to be oiled of the guide rail; an oil inlet disposed on the sliding body; and an oiling groove in communication with the oil inlet, disposed on the inner side surface of the sliding body and surrounding the surface to be oiled of the guide rail, so that the oiling groove applies oil to the surface to be oiled of the guide rail when the sliding body is sliding.

Disclosed is a quick-disassembly nipple connector structure, which is mainly composed of a hollow pipe, a pivoting assembly, a screwing member, a plurality of gripping jaws, a sleeve, a handle and a spring. The handle is additionally disposed on the sleeve and the pivoting assembly; when the handle is not pulled, the sleeve is located at a lock position to lock a grease nipple; and when the handle is pulled downwards, the sleeve is located at a release position to release the grease nipple. The quick-disassembly nipple connector structure can be rapidly switched to the lock position or the release position, thus, facilitating operation, shortening the work time, achieving accurate alignment, improving work efficiency, and avoiding damage to internal parts caused by excessive force application by users.

Disclosed is a quick-disassembly nipple connector structure, which is mainly composed of a hollow pipe, a pivoting assembly, a screwing member, a plurality of gripping jaws, a sleeve, a handle and a spring. The handle is additionally disposed on the sleeve and the pivoting assembly; when the handle is not pulled, the sleeve is located at a lock position to lock a grease nipple; and when the handle is pulled downwards, the sleeve is located at a release position to release the grease nipple. The quick-disassembly nipple connector structure can be rapidly switched to the lock position or the release position, thus, facilitating operation, shortening the work time, achieving accurate alignment, improving work efficiency, and avoiding damage to internal parts caused by excessive force application by users.

Disclosed is a quick-disassembly nipple connector structure, which is mainly composed of a pipe, a pivoting assembly, a screwing member, a plurality of gripping jaws, a sleeve and a handle. The handle can be pulled by users to enable the quick-disassembly nipple connector structure to be rapidly connected to or separated from a grease nipple. When the handle is pulled downwards, the sleeve is located at a lock position to lock the grease nipple; and when the handle is pulled upwards, the sleeve is located at a release position to release the grease nipple. Thus, the quick-disassembly nipple connector structure has the advantages of being capable of improving work efficiency, high in positioning speed, high in accuracy and good in fixing property and has a good overall constituent strength, so that the motion stability is improved, and the operation smoothness and service life are ensured.

Disclosed is a quick-disassembly nipple connector structure, which is mainly composed of a pipe, a pivoting assembly, a screwing member, a plurality of gripping jaws, a sleeve and a handle. The handle can be pulled by users to enable the quick-disassembly nipple connector structure to be rapidly connected to or separated from a grease nipple. When the handle is pulled downwards, the sleeve is located at a lock position to lock the grease nipple; and when the handle is pulled upwards, the sleeve is located at a release position to release the grease nipple. Thus, the quick-disassembly nipple connector structure has the advantages of being capable of improving work efficiency, high in positioning speed, high in accuracy and good in fixing property and has a good overall constituent strength, so that the motion stability is improved, and the operation smoothness and service life are ensured.

An additively manufactured component for a landing gear assembly may comprise a lug and a lubrication channel extending through the lug. The lubrication channel may comprise an inlet and an outlet. The outlet may be located at a pin orifice defined by the lug. A center axis of a first portion of the lubrication channel may be oriented at an angle relative to a center axis of a second portion of the lubrication channel.

A method for greasing a dual angular contact bearing where the grease tool is fabricated from a single unitary piece of material. The grease tool comprises a cylindrical hub, a flange supported adjacent only one end of the cylindrical hub, and a grease fitting attached to the grease tool to facilitate a supply of grease thereto. During use, a pair of spaced apart O-rings, accommodated by an exterior surface of the cylindrical hub, form a pair of grease seals with an inwardly facing surface of an inner race of the dual angular contact bearing. A supply passage conveys the supplied grease from the grease fitting to a grease outlet(s) located in an exterior cylindrical surface of the grease tool, between the pair of O-rings, for conveyance of the supplied grease radially to the inner race of the dual angular contact bearing and facilitate repacking thereof.

A method for greasing a dual angular contact bearing where the grease tool is fabricated from a single unitary piece of material. The grease tool comprises a cylindrical hub, a flange supported adjacent only one end of the cylindrical hub, and a grease fitting attached to the grease tool to facilitate a supply of grease thereto. During use, a pair of spaced apart O-rings, accommodated by an exterior surface of the cylindrical hub, form a pair of grease seals with an inwardly facing surface of an inner race of the dual angular contact bearing. A supply passage conveys the supplied grease from the grease fitting to a grease outlet(s) located in an exterior cylindrical surface of the grease tool, between the pair of O-rings, for conveyance of the supplied grease radially to the inner race of the dual angular contact bearing and facilitate repacking thereof.