油封系列, 产品中心

The Dongfeng Truck 485 Series Oil Seals represent the ultimate in sealing technology for Dongfeng’s most powerful 485 series heavy-duty trucks, engineered to excel in the most demanding industrial, mining, military, and ultra-heavy logistics applications. Designed to withstand extreme torque, relentless vibrations, abrasive environments, and thermal extremes, these oil seals deliver unmatched reliability, zero-leak performance, and extended service life. Built with cutting-edge materials and precision manufacturing, the 485 series oil seals ensure optimal component protection, reduce maintenance costs, and maximize uptime for Dongfeng’s most robust commercial vehicles.

Key Applications & Compatibility

• Vehicle Models:
  • Dongfeng 485 Series: EQ4850, EQ4800, EQ4750 (10×6, 12×8 configurations, mining dump trucks, military cargo vehicles, and specialized heavy-haul trailers).
  • Compatible Components:
    • Engine: High-performance crankshaft front/rear seals, turbocharger seals, and camshaft end seals for ultra-high-output engines.
    • Transmission: Heavy-duty input/output shaft seals, transfer case seals, and clutch hydraulic system seals for multi-speed automated manual transmissions (AMT).
    • Rear Axle: Planetary differential seals, inter-axle differential seals, and wheel hub seals for tandem/tri-axle configurations.
    • Front Axle: Heavy-duty steering gearbox seals, kingpin seals, and suspension pivot seals for off-road articulated trucks.

Technical Specifications

1. Material & Construction:
   • Seal Lip:
     • Nitrile Rubber (NBR): Standard option for general-purpose use (temperature range: -50°C to +120°C).
     • Fluorocarbon Rubber (FKM/Viton): High-temperature variant (up to +250°C) for turbocharged, high-boost diesel engines.
     • PTFE (Teflon)-Coated Lips: Ultra-low friction, high wear resistance, and dry-running capability for high-speed, high-pressure applications.
   • Metal Case:
     • Cold-Rolled Steel (SPCC): Cost-effective, corrosion-resistant for standard use.
     • Stainless Steel (SS316L): Marine-grade option for highly corrosive environments (e.g., coastal mining, salt-road operations).
   • Spring: High-tensile stainless steel spring with anti-corrosion coating for consistent lip pressure under extreme loads.
2. Common Dimensions (Example: Rear Axle Inter-Axle Differential Seal):
   • Inner Diameter (ID): ~110–130 mm (4.33–5.12 inches).
   • Outer Diameter (OD): ~140–160 mm (5.51–6.30 inches).
   • Width: ~22–28 mm (0.87–1.10 inches).
   • Design Type: Quintuple-lip with dual anti-extrusion rings, triple pressure relief grooves, and a reinforced dust exclusion lip for ultra-heavy-duty sealing.
3. Performance Characteristics:
   • Pressure Rating: Up to 2.5 MPa (363 psi) for high-pressure hydraulic, transmission, and differential systems.
   • Speed Rating: Up to 8,000 RPM (depending on seal type and lubrication).
   • Temperature Range:
     • NBR: -50°C to +120°C (-58°F to +248°F).
     • FKM: -35°C to +250°C (-31°F to +482°F).
   • Chemical Compatibility: Resistant to mineral oils, synthetic lubricants, diesel fuel, hydraulic fluids, mild acids, alkalis, and UV exposure.