40BD12A Wheel Hub Bearings 40X74X42mm Angular Contact Ball Bearings

Product Introduction

40BD12A Automotive Wheel Bearing – 40×74×42mm Double Row Angular Contact Ball Bearing

The 40BD12A is a precision‑engineered double‑row angular contact ball bearing, specifically designed for automotive wheel hub applications where compact design, high rotational accuracy, and reliable load support are essential. With its dimensions of 40 mm inner diameter × 74 mm outer diameter × 42 mm width, this bearing offers an excellent balance of load capacity and space efficiency for modern passenger car suspension and steering systems.

Manufactured to P0 precision class, the 40BD12Aensures smooth rotation, precise alignment, and consistent performance across a wide range of speeds and operating temperatures. It features 2RS‑type rubber seals on both sides, which provide effective protection against water, dust, and contaminants while retaining the factory‑applied grease for reduced maintenance and extended service life. The bearing is constructed from high‑grade GCr15 chrome steel for both rings and balls, delivering exceptional hardness, wear resistance, and fatigue strength. A durable nylon cage minimizes friction, reduces operating noise, and ensures stable performance even under high‑speed conditions.

As a single‑row angular contact design, this bearing efficiently supports combined radial and axial loads, making it particularly suitable for wheel hub positions where space is limited but precise load handling is required. It is an ideal replacement choice for front wheel hub assemblies in a wide range of sedans, compact cars, and light vehicles, contributing to improved steering responsiveness, reduced vibration, and enhanced overall driving safety and comfort.

Key Specifications:

• Model: 40BD12A

• Type: Single‑row angular contact ball bearing

• Dimensions: 40 × 74 × 42 mm

• Weight: Approx. **** kg (subject to actual measurement)

• Precision Rating: P0

• Internal Clearance: Standard (meets OEM specifications)

• Seals: ZZ (steel seals both sides)

• Cage Material: Nylon

• Ball Material: GCr15 chrome steel

• HS Code: 8482102000

Services & Logistics:

• Service: OEM service available upon request

• Packaging: Standard export packing

• Payment: PayPal / Western Union / T/T (100% in advance)

• Delivery: 3–4 workdays after payment

• Shipping: DHL / FedEx / UPS / TNT

• Ports: Shanghai / Guangzhou

Backed by strict quality control, competitive factory pricing, and fast order processing, the 40BD12A wheel bearing delivers dependable performance and excellent value for automotive aftermarket distributors, repair workshops, and fleet operators worldwide.

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