Lubricating ball heads - straight threaded grease nipples

Among the most commonly used types of lubricators is definitely the straight ball lubricator. The grease gun consists of a sleeve for the grease press in a spherical shape. This spherical grease nipple is called straight because the grease nipple is mounted on the head in a straight direction, i.e. in the axis of rotation of the thread of the grease nipple. The grease nipples are manufactured according to DIN 71412.