Full Series Wheel Hub Bearings

Product Model	Material	Inner Diameter (mm)	Outer Diameter (mm)	Thickness (mm)	Seal Type	Precision Grade
DAC30600037	GCr15	30	60	37	2RS	P6
DAC40740042	GCr15	40	74	42	2RS	P6
DAC25520037	GCr15	25	52	37	2RS	P6
DAC34640037	GCr15	34	64	37	2RS	P6
DAC40720037	GCr15	40	72	37	2RS	P6
DAC38740050	GCr15	38	74	50	2RS	P6
DAC39740037	GCr15	39	74	37	2RS	P6
DAC35640037	GCr15	35	64	37	2RS	P6
DAC37740045	GCr15	37	74	45	2RS	P6
DAC42800045	GCr15	42	80	45	2RS	P6
DAC43800050	GCr15	43	80	50	2RS	P6
DAC30620038	GCr15	30	62	38	2RS	P6
DAC32720045	GCr15	32	72	45	2RS	P6
DAC34660037	GCr15	34	66	37	2RS	P6
DAC40760033	GCr15	40	76	33	2RS	P6
DAC42760038	GCr15	42	76	38	2RS	P6
DAC42770038	GCr15	42	77	38	2RS	P6
DAC45800045	GCr15	45	80	45	2RS	P6
DAC50800039	GCr15	50	80	39	2RS	P6
DAC25550043	GCr15	25	55	43	2RS	P6
DAC28580042	GCr15	28	58	42	2RS	P6
DAC38720034	GCr15	38	72	34	2RS	P6
DAC40750037	GCr15	40	75	37	2RS	P6
DAC43790041	GCr15	43	79	41	2RS	P6
DAC44820037	GCr15	44	82	37	2RS	P6
DAC49880046	GCr15	49	88	46	2RS	P6
DAC50900034	GCr15	50	90	34	2RS	P6
DAC55900060	GCr15	55	90	60	2RS	P6
DAC30630042	GCr15	30	63	42	2RS	P6
DAC32730038	GCr15	32	73	38	2RS	P6
DAC35720033	GCr15	35	72	33	2RS	P6
DAC36760037	GCr15	36	76	37	2RS	P6
DAC37720037	GCr15	37	72	37	2RS	P6
DAC38700037	GCr15	38	70	37	2RS	P6
DAC39680037	GCr15	39	68	37	2RS	P6
DAC40700043	GCr15	40	70	43	2RS	P6

Manufactured in China’s professional bearing industrial base, our wheel hub bearings are ISO and CE certified. Featuring integrated design, high precision and exceptional reliability, they are engineered to meet the strict safety and performance requirements of automotive and light commercial vehicle applications.

We offer a complete series of wheel hub bearings, covering mainstream specifications including double-row ball bearings, unitized hub assemblies and integrated wheel bearings, designed for applications ranging from passenger cars and SUVs to light trucks and vans. Every bearing undergoes strict production processes and comprehensive quality inspections to ensure stable, long-lasting performance on the road.

Our wheel hub bearings deliver outstanding load capacity and impact resistance. Crafted from premium high-purity GCr15 bearing steel, each component is processed through high-temperature quenching and low-temperature tempering, achieving a final hardness of HRC60 ± 2. This forms a high-hardness, wear-resistant martensitic structure that significantly enhances surface strength and fatigue resistance. The precision-engineered double-row raceway design evenly distributes radial and axial loads, eliminating localized overloading. This design allows the bearing to withstand extreme road shocks, cornering forces and heavy vehicle weights with minimal wear, ensuring stable handling even under challenging driving conditions.

High rotational stability and low noise are ensured through multi-stage precision grinding and superfinishing of every raceway and rolling element, achieving a surface roughness of Ra ≤ 0.2 μm. The ultra-smooth contact surface eliminates micro-jitter caused by uneven friction, ensuring quiet, smooth wheel rotation. Internal clearances and preloads are precisely controlled during production, effectively reducing thermal expansion-induced changes under varying speeds and loads. This maintains consistent rotational accuracy, minimizes energy loss and improves overall vehicle fuel efficiency.

Enhanced durability and extended service life are achieved through multiple design and material optimizations. The optimized seal structure provides robust protection against water, dust, mud and corrosive road contaminants, preventing premature failure. High-performance anti-rust and high-temperature lubricating grease is used to form a durable protective oil film between contact surfaces, reducing metal-to-metal friction even under extreme operating temperatures. Even in harsh environments or continuous high-mileage use, the bearing maintains stable performance for extended periods.

Our wheel hub bearings also offer wide temperature adaptability. Constructed with special heat-stabilized bearing steel and temperature-resistant seals, they maintain consistent performance across a temperature range of -40℃ to 150℃. Low-temperature stabilization treatment ensures minimal dimensional and clearance changes at high temperatures, preventing increased vibration, noise or failure caused by thermal expansion. This guarantees reliable operation in variable climates, from cold winter conditions to hot summer road trips.

Widely applied in passenger cars, SUVs, light trucks and commercial vehicles, they serve as ideal high-cost-performance replacements for original equipment parts. We maintain adequate stock of standard models and support custom sizes and OEM services. Competitive factory-direct pricing, professional technical guidance and reliable after-sales service have earned us recognition from customers worldwide.