0102030405
China Suppliers Factory XTB Bushings Taper Lock Split Bearing Bush for Wheel Hub Applications
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.
1st Generation Hub Unit
Composed of double row angular contact bearings. Historically, most car wheel hub bearings used single-row tapered roller or ball bearings in pairs.
2nd Generation Hub Unit
Features a flange on the outer raceway for fixing the bearing. The bearing can be simply put on the axle and fixed with nuts, making car maintenance easier.
3rd Generation Hub Unit
Integrates a bearing unit and an anti-lock brake system (ABS). Designed with an inner flange fixed on the drive shaft and an outer flange that installs the entire bearing.
1. Gravity Casting
Uses gravity to pour aluminum alloy into the mold. Simple and cost-effective with high efficiency, but prone to bubbles, uneven density, and lower surface smoothness.
2. Forging Method
Directly extrudes aluminum ingots with a thousand-ton press. Offers uniform density, delicate surfaces, lightweight walls, and 30% higher strength than casting, despite higher costs.
3. Low-pressure Precision Casting
Precision casting at 0.1Mpa. Delivers good formability, uniform density, and smooth surfaces. It balances high strength, lightweight, and cost-efficiency with over 90% yield.
What are the common names for a wheel hub?
Wheel hubs are also commonly referred to as rims, steel rims, wheels, and tire bells. They are cylindrical metal components mounted on an axle to support the tire.
How does the second-generation hub unit simplify maintenance?
The second generation features a flange on the outer raceway, allowing the bearing to be easily placed on the axle and secured with nuts, which significantly simplifies the repair process.
What is the main advantage of the third-generation wheel hub?
The third generation integrates the bearing unit with an anti-lock brake system (ABS) and uses a dual-flange design for secure mounting on both the drive shaft and the overall assembly.
What are the drawbacks of gravity casting for wheels?
While cost-effective, gravity casting is prone to internal bubbles (blastic holes), uneven material density, and insufficient surface smoothness compared to other methods.
Why is forging considered the strongest manufacturing method?
Forging uses a thousand-ton press to extrude aluminum ingots, resulting in the highest material strength (30% higher than casting) and a very uniform density.
Which method is the mainstream for high-quality aluminum wheels?
Low-pressure precision casting is the mainstream choice because it provides high strength and lightweight properties while maintaining a high yield rate of over 90%.