Qd bushing taper lock split bearing bush XTB bushings

The wheel hub is a cylindrical metal component that is centrally mounted on an axle and supports the tire. Also called rims, steel rims, wheels, and tire bells. There are many types of wheel hubs depending on diameter, width, molding method, and material.

 In the past, most car wheel hub bearings used single-row tapered roller or ball bearings in pairs. With the development of technology, car wheel hub units have been widely used in cars. The scope and usage of wheel hub bearing units are growing day by day, and it has developed to the third generation: the first generation is composed of double row angular contact bearings. The second generation has a flange on the outer raceway for fixing the bearing. The bearing can be simply put on the axle and fixed with nuts. Makes car maintenance easier. The third generation wheel hub bearing unit uses a bearing unit and an anti-lock brake system. The hub unit is designed with an inner flange and an outer flange. The inner flange is fixed on the drive shaft with bolts, and the outer flange installs the entire bearing together.

 There are three manufacturing methods for aluminum alloy wheels: gravity casting, forging, and low-pressure precision casting. 1. The gravity casting method uses gravity to pour the aluminum alloy solution into the mold. After forming, it is processed and polished by a lathe to complete production. The manufacturing process is relatively simple, does not require precision casting technology, has low cost and high production efficiency, but it is prone to bubbles (blastic holes), uneven density, and insufficient surface smoothness. A considerable number of Geely's models are equipped with wheels produced by this method, mainly early-production models, and most new models have been replaced with new wheel hubs. 2. Forging method: the whole aluminum ingot is directly extruded on the mold by a thousand-ton press. The advantages are uniform density, smooth and delicate surface, thin wall and light weight of the wheel hub, and the highest material strength, which is more than 30% higher than the casting method, but Since it requires sophisticated production equipment and the yield is only 50% to 60%, the manufacturing cost is high. 3. Low-pressure precision casting method is precision casting under low pressure of 0.1Mpa. This casting method has good formability, clear outline, uniform density and smooth surface. It can not only achieve high strength and lightweight, but also control costs and improve the yield rate. At more than 90%, it is the mainstream manufacturing method for high-quality aluminum alloy wheels.