Sleeve 15216908 | High-Strength Alloy Steel Sleeve for Hydraulic Rock Drills
Sleeve 15216908 | High-Strength Alloy Steel Sleeve for Hydraulic Rock Drills - Image 2
Sleeve 15216908 | High-Strength Alloy Steel Sleeve for Hydraulic Rock Drills - Image 3
Sleeve 15216908 | High-Strength Alloy Steel Sleeve for Hydraulic Rock Drills - Image 4
Sleeve 15216908 | High-Strength Alloy Steel Sleeve for Hydraulic Rock Drills - Image 5

Sleeve 15216908 | High-Strength Alloy Steel Sleeve for Hydraulic Rock Drills

Part Number: 15216908
  • Material: 20MnCr5 alloy steel (quenched & tempered, HB280 hardness)
  • Dimensions:
    • Inner Diameter:
    • Outer Diameter:
    • Length:
  • Weight: 0.053 kg (calculated based on 7.85 g/cm³ density)
  • Surface Coating: Zinc-plated (8 μm thickness) with salt spray resistance ≥96 hours (ISO 9227)
  • Load Capacity: 20 MPa dynamic / 30 MPa static
  • Installation: Press-fit design with recommended torque of 60 N·m
  • Compatibility: Direct fit for hydraulic rock drills requiring 16 mm bore diameter mounting
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High-Strength Alloy Steel Sleeve for Hydraulic Rock Drills
Engineered for extreme underground mining conditions, this sleeve ensures reliable load-bearing in high-vibration hydraulic rock drill applications. Constructed from 20MnCr5 alloy steel (quenched & tempered to HB280 hardness), it withstands continuous dynamic loads up to 20 MPa while resisting abrasion and corrosion in harsh environments .

 

Technical Specifications & Design
The sleeve features a 16 mm inner diameter (ISO 4385 tolerance ±0.05 mm) and 24 mm outer diameter, designed for secure mounting in hydraulic cylinder assemblies and drill rig components. Its milled lubrication grooves enhance oil retention, reducing friction during reciprocating motion. The zinc-plated coating (8 μm thickness) passes 96+ hours of salt spray testing (ISO 9227), ensuring long-term performance in wet or corrosive mining environments .

 

Performance Advantages
  • Vibration Resistance: Engineered to maintain dimensional stability in high-frequency oscillating systems, minimizing wear and tear in critical hydraulic connections.
  • Corrosion Protection: Zinc plating meets ISO 9227 standards, extending service life by 30% compared to uncoated steel sleeves .
  • Precision Fit: Thread dimensions adhere to ISO 4385 tolerances, ensuring compatibility with standard hydraulic system components.
  • Ease of Installation: Press-fit design with recommended 60 N·m torque simplifies assembly and reduces downtime .

 

Applications
  • Underground Mining: Critical for supporting rotating shafts in rock drills used in tunnel boring and ore extraction.
  • Heavy Machinery: Used in excavators and loaders to reduce friction in high-pressure hydraulic pivot points.
  • Industrial Hydraulics: Supports presses and material handling equipment, ensuring smooth operation in repetitive motion tasks.

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