FAGI DAC 38-70-37 Angular Contact Ball Bearing
Have you ever noticed a humming or droning sound while driving that gets louder with speed? This is often a sign of a failing wheel bearing. The FAGI DAC 38-70-37 acts as the heart of your wheel assembly. Its primary job is to allow your wheels to spin smoothly with minimal friction while supporting the entire weight of the vehicle and its passengers.
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Product Detail
FAGI Angular Contact Wheel Bearing DAC 38-70-37 Smooth rotation, silent performance, and reliable durability for your vehicle.
Engineered for wheel hub assemblies to reduce friction, handle road impact, and support vehicle load in diverse driving conditions.
What is the FAGI DAC 38-70-37 and why is it crucial?
Have you ever noticed a humming or droning sound while driving that gets louder with speed? This is often a sign of a failing wheel bearing. The FAGI DAC 38-70-37 acts as the heart of your wheel assembly. Its primary job is to allow your wheels to spin smoothly with minimal friction while supporting the entire weight of the vehicle and its passengers.
When you drive, your tires encounter road imperfections, speed bumps, and potholes. Every vibration and impact is transferred through the wheel assembly. A high-quality bearing like the FAGI DAC 38-70-37 is designed to act as a sturdy support, absorbing these forces without compromising rotation or structural integrity.
Decoding the DAC 38-70-37 Part Number
These numbers are not arbitrary; they represent the precise dimensions required for your vehicle's hub. Even a one-millimeter discrepancy can cause severe mechanical failure or inability to install.
- DAC: Refers to a "Double Row Angular Contact" wheel bearing, specifically designed for automotive wheel applications to handle both radial and thrust loads.
- 38 (Bore): The inner diameter is 38mm. This is where the axle or hub shaft sits.
- 70 (Outer Diameter): The outer diameter is 70mm. This ensures a perfect fit into the wheel hub housing.
- 37 (Width): The overall width is 37mm, providing the necessary stability for the dual row of ball bearings.
Technical Specifications
- Inner Diameter (ID): 38mm
- Outer Diameter (OD): 70mm
- Width: 37mm
- Bearing Type: Double Row Angular Contact
- Sealing: Integrated protective seal against dust and moisture
Note: Some vehicle models vary by year. Please verify your old part's dimensions using a caliper before finalizing your purchase.
Why Angular Contact?
When cornering, your vehicle experiences lateral force (centrifugal force) trying to push the car outward, alongside the vertical force of the car's weight. A standard bearing would fail under these combined pressures. An "Angular Contact" bearing uses a specific internal design that allows the balls to handle both vertical weight and horizontal cornering pressure, ensuring stability during maneuvers.
Key Advantages of FAGI Bearings
Smooth & Silent Operation
Precision-engineered raceways ensure minimal noise and vibration for a quieter cabin.
Factory Pre-Lubricated
Packed with high-temperature, long-life grease to eliminate the need for maintenance.
Impact Resistance
Specialized heat-treated steel provides durability against potholes and road shocks.
Advanced Sealing
Robust seals prevent water, grit, and dirt contamination, preserving grease integrity.
Signs It’s Time to Replace
- Humming or Grinding Noise: A consistent droning sound that increases with vehicle speed.
- Noise Change During Turns: If the noise diminishes when turning the steering wheel in one direction, it indicates a failing bearing on that side.
- Vibration: Feelable vibrations in the steering wheel or brake pedal.
- Play in the Wheel: If you lift the car and can physically wiggle the tire, the bearing is severely compromised.
Installation Best Practices
Improper installation is the #1 cause of premature bearing failure. Follow these golden rules:
- Never use a hammer: Direct impact will damage the internal raceways. Always use a hydraulic press.
- Press on the Outer Race: Apply pressure only to the outer ring of the bearing during installation.
- Clean the Housing: Remove any debris or metal shavings from the hub housing before pressing.
- Don't tamper with the seals: Never remove the protective covers to add extra grease; it compromises the factory seal.
Frequently Asked Questions
1. What is the typical lifespan of a wheel bearing?
With correct installation, a quality bearing can last between 70,000 to 100,000 kilometers, depending on road conditions.
2. Should I replace bearings in pairs?
It is highly recommended. Since both bearings on an axle have experienced the same road stress, if one fails, the other is likely approaching its end of life.
3. How can I confirm authenticity?
Genuine FAGI bearings feature clear, laser-etched part numbers and high-quality, tamper-evident packaging. Purchase from trusted sources like KGICO.
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