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Sitrak Front Hub Assembly
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Sitrak VGD71 Front Wheel End Assembly(Φ335)

Sitrak VGD71 Front Wheel End Assembly(Φ335)
Sitrak VGD71 Front Wheel End Assembly(Φ335)
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What is the Sitrak VGD71 Front Wheel End Assembly(Φ335)

  • Sitrak VGD71 Front Wheel End Assembly (Φ335): Heavy-Duty Performance for Commercial Vehicles​
  • The Sitrak VGD71 Front Wheel End Assembly (Φ335) is a precision-engineered solution designed to deliver superior load-bearing capacity, reliable braking, and minimal maintenance for heavy-duty trucks and buses. With a 335mm wheel end diameter, this assembly integrates high-quality components to ensure smooth operation, durability, and safety in the most demanding commercial applications.​
  • Core Components for Robust Wheel Support​
  • The Front hub assembly, forged from high-strength alloy steel, forms the structural foundation, providing a secure mounting point for the wheel and brake system. It houses Tapered roller bearings (double-row design), engineered to withstand radial and axial loads while reducing friction during high-speed rotation. These bearings, heat-treated for enhanced wear resistance, are lubricated with HP-R Grease to maintain optimal performance and extend service life, even under heavy payloads or uneven terrain.​
  • Reliable Braking with Brake Drums​
  • A Brake drum, cast from premium-grade gray iron, is integral to the assembly, offering consistent stopping power through its heat-resistant and wear-resistant surface. Its 335mm diameter matches OEM specifications for optimal contact with brake shoes, minimizing fade during prolonged braking. Cross recessed countersunk head screws and Hexagon head bolts M8 secure the drum to the hub, featuring corrosion-resistant coatings to prevent loosening due to vibration or moisture.​
  • Sealing and Protection for Longevity​
  • A Hub Oil Seal, constructed from oil-resistant NBR rubber with a steel reinforcement ring, creates a tight barrier against lubricant leakage and contaminant ingress, protecting the bearings from dust, water, and debris. Complementing the seal are Sealing washers, precision-cut to ensure leak-free connections at critical flange points. The Hub end caps, made from impact-resistant steel, shield the hub’s inner components from external damage while providing a clean, aerodynamic profile.​
  • Secure Fastening and Adjustment​
  • Lock nuts and Cotter pins work together to secure the wheel hub to the axle, ensuring zero axial play and preventing accidental disassembly. The lock nuts, heat-treated to 12.9-grade strength, feature a serrated flange for enhanced grip, while cotter pins act as a fail-safe mechanism, locking the nuts in place during extreme maneuvers. Thrust washers distribute clamping force evenly across the bearing races, reducing stress concentrations and improving load distribution.​
  • Design for Easy Maintenance and Safety​
  • The assembly’s modular design allows for straightforward installation and component replacement, with accessible grease nipples (compatible with HP-R Grease) enabling routine lubrication without disassembling the hub. The brake drum’s friction surface is precision-machined to OEM tolerances, ensuring smooth engagement with brake linings and reducing noise or vibration. These features make the VGD71 Front Wheel End Assembly ideal for fleet operators prioritizing minimal downtime and consistent performance.​
  • SEO-Optimized Features for Commercial Relevance​
  • Technical Specifics: Highlights “Φ335”, “Tapered roller bearings”, and part numbers (e.g., Hexagon head bolts M8) for precise keyword targeting in parts searches.​
  • Material Excellence: Emphasizes alloy steel construction, heat-treated bearings, and NBR seals to address durability concerns for heavy-duty use.​
  • Maintenance Ease: Mentions HP-R Grease compatibility and modular design to attract fleet managers seeking cost-effective upkeep solutions.​
  • In summary, the Sitrak VGD71 Front Wheel End Assembly (Φ335) combines rugged engineering with intelligent component design, delivering reliable wheel support, efficient braking, and long-term durability. Trust in its performance to keep your commercial vehicles safe, efficient, and on the road—mile after challenging mile.

Product Parameters of Sitrak VGD71 Front Wheel End Assembly(Φ335)

AC40414171933 VGD71 Front Wheel End Assembly(Φ335)
Serial No.  Drawing No. Name Quantity
1 Q2541025 Cross recessed countersunk head screws 2
2 WG4070450005 Brake drums 1
3 ZQ150B0816 Hexagon head bolts M8 6
4 WG4071410046 Hub end caps 1
5 WG4071410045 Sealing washers 1
6 Q5006370 Cotter pin 1
7 WG4095415012 Lock nuts 1
8 WG4071415037 Thrust washers 1
9 WG9100032311 Tapered roller bearings 1
10 AZ4071410032 Front hub assembly 1
11 WG9100032314 Tapered roller bearings 1
12 AZ4071410051 Hub Oil Seal 1
13 WG9007380001 HP-R Grease 30
 

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