The spring can be mounted above or below the axle (the sheath of the driving axle). In both cases it is attached to it with yokes. The front eye of the spring is secured by a pin through the ear sleeve, directly in the frame bracket, and the second - through the hanger, which allows the spring to expand when driving on a bumpy road. Each spring pin is equipped with a grease nipple, allowing grease to be fed to the bushing. Often on trucks, e.g. Star, the rear end of the main blade is flat and rests against the glider in the rear bracket, on which it slides when bending and straightening the spring. Usually, however, the rear part of the spring is connected to the frame with a hanger. In some cars, flexible spring seats are used to eliminate lubrication-required spring pins, which also absorb shocks. Flexible seating consists in the use of a rubber sleeve surrounding the spring pin or placing a flat spring leaf in a rubber cushion.