Needle Bearing 80196379 High-Precision Chrome Steel Needle Bearing for Hydraulic Rock Drills
Needle Bearing 80196379 High-Precision Chrome Steel Needle Bearing for Hydraulic Rock Drills - Image 2
Needle Bearing 80196379 High-Precision Chrome Steel Needle Bearing for Hydraulic Rock Drills - Image 3
Needle Bearing 80196379 High-Precision Chrome Steel Needle Bearing for Hydraulic Rock Drills - Image 4

Needle Bearing 80196379 High-Precision Chrome Steel Needle Bearing for Hydraulic Rock Drills

Part Number: 80196379
  • Material: High-carbon chromium steel (SUJ2) with quenched & tempered finish (hardness HRC 58-62)311
  • Dimensions:
    • Inner Diameter:
    • Outer Diameter:
    • Width:
  • Weight: 0.4 kg (calculated based on SUJ2 density of 7.85 g/cm³ and dimensions)11
  • Precision Class: ABEC-5 (ISO 492 compliant, radial runout ≤ 0.005 mm)5
  • Load Capacity:
    • Dynamic: 25 kN
    • Static: 15 kN
  • Temperature Range: -30°C to 180°C
  • Compatibility: Direct fit for hydraulic rock drills requiring 40 mm bore diameter mounting
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High-Precision Chrome Steel Needle Bearing for Hydraulic Rock Drills
Engineered for extreme underground mining conditions, this needle bearing ensures smooth operation in high-vibration hydraulic rock drill applications. Constructed from high-carbon chromium steel (SUJ2), it withstands continuous dynamic loads up to 25 kN while resisting wear and fatigue in abrasive environments .

 

Technical Specifications & Design
The bearing features a 40 mm inner diameter (ISO 15 tolerance) and ABEC-5 precision, minimizing radial runout to ≤0.005 mm for consistent performance. Its quenched & tempered finish (HRC 58-62) enhances surface hardness, reducing friction and extending service life by 30% compared to standard carbon steel bearings . The 72 mm outer diameter and 17 mm width are optimized for direct replacement in Sandvik UD391 hydraulic rock drills, ensuring seamless integration with existing systems .

 

Performance Advantages
  • Vibration Resistance: Double-lip seals (NBR material) protect against mineral oil ingress and contaminants, maintaining lubrication integrity under cyclic loading.
  • Temperature Stability: Operates reliably from -30°C to 180°C, suitable for both cold climates and high-heat drilling environments.
  • Longevity: SUJ2 material and ABEC-5 precision reduce wear by 20% compared to conventional bearings, minimizing downtime in critical mining operations.

 

Applications
  • Underground Mining: Essential for hydraulic rock drills in tunnel boring and ore extraction, where precision and durability are critical.
  • Heavy Machinery: Used in excavators and loaders to support high-speed rotating components during high-impact operations.
  • Industrial Hydraulics: Supports presses and material handling systems, ensuring precision in repetitive motion tasks.

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