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The DAC40800045 Wheel Hub Bearing is a high-integration automotive wheel-end component, widely used in passenger cars and light vehicles. As a standardized DAC-series bearing, its model encodes key dimensions: 40mm inner diameter (mounting shaft), 80mm outer diameter (housing fit), and 45mm overall width. It adopts an integrated design, pre-assembling inner/outer rings, rolling elements, seals, and mounting flanges, serving as a core part for wheel rotation. Engineered to withstand combined loads from vehicle weight, road impacts, and braking forces, it ensures driving safety, smooth operation, and low noise, being a staple in automotive OEM production and aftermarket replacement.
Integrates bearing, flange, and seal into one pre-assembled unit, simplifying installation, reducing wheel-end space occupation, and avoiding assembly errors.
Optimized angular contact structure bears heavy radial loads (vehicle weight) and bidirectional axial loads (cornering/braking), withstanding sudden road impacts stably.
Equipped with multi-layer rubber lip seals and metal dust covers, it effectively blocks water, dust, and road salts, preventing lubricant leakage and internal corrosion.
Precision-machined raceways and high-quality steel rolling elements minimize friction; advanced lubrication technology ensures low rotational noise and long service life (up to 150,000+ km).
Matched to compact and mid-size passenger cars (e.g., hatchbacks, sedans), serving as front/rear wheel hub bearings, ensuring smooth driving and ride comfort.
Applied in light vans, mini-trucks, and MPVs, adapting to frequent start-stop and moderate load changes in urban logistics or passenger transport.
Suitable for small electric cars and plug-in hybrids, with low-friction design reducing energy consumption and matching electric drivetrain requirements.
Used in light modified vehicles like urban electric logistics vehicles and small recreational vehicles, meeting wheel-end reliability needs in specialized scenarios.
The bearing features an inner diameter (shaft size) of 40mm, an outer diameter (housing fit) of 80mm, and an overall width of 45mm.
The integrated design pre-assembles the inner/outer rings, rolling elements, seals, and mounting flanges into a single compact unit. This minimizes space requirements, simplifies the installation process, and prevents common mounting errors.
It is widely used in compact and mid-size passenger cars, light commercial vehicles (such as vans, mini-trucks, and MPVs), small electric and hybrid vehicles (NEVs), and special light urban logistics vehicles.
Equipped with advanced multi-layer rubber lip seals and metal dust covers, it effectively seals against water, road salts, and dust, safeguarding the internal grease and preventing corrosion.
Thanks to precision-machined raceways, high-grade steel rolling elements, and advanced lubrication technology, it delivers low-noise rotation and can reach a service life of up to 150,000+ km under normal operating conditions.
Yes, its optimized angular contact structure is designed to simultaneously bear heavy radial loads (vehicle weight) and bidirectional axial loads, such as those caused by cornering and braking forces.
