Lubricating nipple

A lubricating nipple for being pressed into a bore of a thin-walled component, such as a bearing bush of a universal joint, comprising:

• a housing with a flow-through channel for enabling passage of a lubricant;
• a check valve arranged in the flow-through channel;
• a seat portion, the seat portion positioning the lubricating nipple in the bore in a mounted condition;
• a coupling portion for coupling the lubricating nipple to a lubricating device, the coupling portion includes a first abutment face, the first abutment face faces the seat portion, the mounted lubricating nipple, in the pressing-in direction, is axially supported by the first abutment face against the thin-walled component;
• a collar portion includes a second abutment face, the second abutment face is arranged opposite to the first abutment face, the collar portion expands the bore in the thin wall component as the collar passes through the thin wall, after passage of the collar portion, the collar portion has a diameter larger than a diameter of the bore in the thin wall component, and the thin wall component elastically returns abutting against the seat portion and the mounted lubricant nipple can be axially supported by the second abutment face against an inside surface of the thin-walled component;
• a taper is on the collar portion at an end remote from the seat portion, the taper includes a chamfer extending towards the end;
• and
• the chamfer includes a first chamfer portion and a second chamfer portion, both chamfer portions are provided in the form of a truncated cone and a cone angle of the first chamfer portion is smaller than a cone angle of the second chamfer portion.