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graphite plug bearing

solid-lubricating bearing

JDB
JDB650 solid-lubricating bearings operate without external lubrication. They contain embedded solid lubricants for continuous smooth operation. These bearings are ideal for industrial use, reducing maintenance and enhancing reliability.
Delivery
FOB,CIF,CFR
minimum order
50 pieces
Supply Ability
100000pieces / Month
Country of Origin
ZHEJIANG ,CHINA
Stock Time
30-45Day
Quantity:
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Product Overview
Product Name: JDB650 Solid-Lubricating Bearing
Model: JDB650
Brand: GD
Primary Materials: 650#+Graphite

Solid-Lubricant Engineering

Permanent anti-friction architecture

Diffusion Bonded Lubrication

Precisely spaced graphite plugs occupy 22% volumetric density in this solid bronze bearing, releasing self-generated lubricant films at >200°C. Hot rolling mill results:

  • Autonomous graphite replenishment at 650°C
  • 0.014mm wear after 14,000ₒₕ at 75rpm
  • Eliminates lubrication points in reheat furnace conveyors
    Continuous casters utilize this graphite plug bearing to avoid fire hazards from oil leaks.

Mechanical Bond Integrity

Intermetallic locking matrix retains plugs under 75G impacts - this self lubricating bearing outperforms sintered alternatives in steel descaling:

  • Zero plug ejection after 8M high-pressure water blasts
  • Plug retention force >280MPa
  • UL listed for explosive environments
    Forging equipment replaces babbit-lined sleeves with this solid bronze bearing solution.

Extreme Environment Durability

Uninterrupted production technology

Thermal Cycling Stability

650# bronze-graphite composite maintains stable clearance in this graphite plug bearing across -40°C to 480°C. Blooming mill verification:

  • ±0.013mm dimensional shift after 1,200 thermal cycles
  • 0.002mm²/hr metal transfer at 400°C
  • Prevents seizure in coiler mandrels
    Electroslag remelting equipment employs this self lubricating bearing to withstand 15°C/sec heating rates.

Chemical Immunity

Halogen-resistant microstructure protects this solid bronze bearing in pH 0.5-14 environments. Pickling line outcomes:

  • 0.0003mm/yr corrosion rate in 18% HCl
  • 15-year service in sulfur recovery units
  • Passes ASTM G31 immersion testing
    Copper electrolysis cells prevent anodic erosion using this graphite plug bearing assembly.

Metallurgical Implementation

Industry-specific validation

Hot Rolling Optimization

Verified in 1,250mm strip mills:

  • 94% reduction in scheduled downtime
  • Bearing temperature ≤220°C at 60m/min rolling speed
  • Outlasts aluminum bronze by 7x lifespan
    Work roll chocks utilize this self lubricating bearing to endure 1.4MN separating forces.

Continuous Caster Performance

ASTM A988 mockup testing:

  • Withstands 78,000 ton slab weight fluctuations
  • No lubrication needed between campaigns
  • Water spray survival at 900°C surface temp
    Oscillation frames achieve 5.5M cast tons using this solid bronze bearing system before replacement.

Tribological Efficiency

Engineering innovation

Wear Mathematics

Predictive PV algorithms confirm:

  • 0.009mm³/km wear rate @ 3.5MPa·m/s dry
  • Infinite life below 25% PV max
  • Surface hardness stabilization at 63 HRC
    Coke pusher rams achieve 1.9M cycles with this graphite plug bearing technology.

Friction Science

Boundary-layer optimization delivers μ≤0.08 in this self lubricating bearing. Validation:

  • 32% lower torque than centrifugally cast bushings
  • No stick-slip below 0.03m/s
  • Conforms to ISO 4378-5 for slow oscillation
    Sinter furnace belt drives utilize this solution for jerk-free starts.