DAC427840 Automotive Wheel Hub Bearing 42x78x40mm

Robust 40mm Width: The extra-wide profile ensures enhanced axial stability, drastically reducing wheel wobble and improving steering response on heavier vehicles.
Rigorous Manual Verification: By relying strictly on manual assembly and individual human inspection, we verify the smooth rotational feel and precise seal seating of every unit, ensuring zero out-of-box defects.
Super-Finished Raceways: Precision grinding drastically reduces rolling resistance, ensuring minimal heat generation during highway driving or towing.
All-Weather Resilience: High-quality rubber contact seals efficiently lock in lubrication while repelling rainwater, grit, and corrosive road salts.

Technical Data

Technical Parameter	Metric Value
Inner Bore Diameter (d)	42.00 mm
Outer Diameter (D)	78.00 mm
Total Width (B)	40.00 mm
Structure	Angular Contact Double Row Ball

Product Specifications

Specification	Details
Item Type	Double-Row Angular Contact Wheel Bearing
Model Number	DAC427840
Material	Vacuum-Degassed GCr15 Chrome Steel
Dimensions (Metric)	42.00 mm x 78.00 mm x 40.00 mm
Lubrication	High-Temp Synthetic Chassis Grease

Product Introduction

The DAC427840 is a heavy-duty wheel hub bearing widely utilized in the global automotive aftermarket for heavier chassis platforms. Measuring 42 mm internally, 78 mm externally, and 40 mm wide, it provides critical structural support and vibration dampening for vehicle axles. Forged from vacuum-degassed GCr15 chrome steel, this bearing is designed to absorb harsh multi-directional shock loads generated by off-road or poor road conditions. It represents a highly profitable replacement unit for international B2B auto parts importers focused on SUV and light truck segments.

Applications

Automotive wheel hub and knuckle assemblies for large SUVs and off-road vehicles.
Commercial fleet suspension maintenance overhauls.
Comprehensive aftermarket heavy-duty wheel bearing replacement kits.

FAQ

Q: Are these large bearings ready for direct installation?
A: Yes, the DAC427840 is a fully sealed, pre-lubricated Gen 1 unit, engineered for direct press-in installation into the steering knuckle without any need for additional greasing.
Q: How does your manual assembly process benefit us as an importer?
A: Our focused manual assembly eliminates the systemic errors of automated lines. You receive 100% manually inspected bearings, drastically reducing your warranty return rates and protecting your brand's local reputation.

OEM & Custom Service

Complete B2B private label support, customized color carton design, laser etching on the outer casing, and containerized shipment preparation.

Packing & Delivery

Protected with anti-rust oil, sealed in protective barrier bags, individually packaged in heavy-duty customized boxes, and consolidated on export-ready pallets.