The glass 151.37.216 is used in the gearbox of HTZ tractors and serves as a supporting element for mounting bearing 311 (or 6311). Its interior has a precision-made recess into which the bearing fits tightly. To securely fix it, a retaining ring B120 is used (dimensions: outer diameter 126 mm, width 7 mm, thickness 2.5 mm), which prevents the bearing from moving during operation.
This cup is mounted on the secondary shaft of the gearbox, ensuring stable and durable operation of the transmission. It is used in gearboxes of HTZ tractors, such as T-150, HTZ-17221, HTZ-242K and other models that use classical mechanics with this type of bearing mounting.