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BK 090

Sliding bush BK090

Characteristics

Design
  • Multi-lubrication friction bearing in rolled bronze 
Construction type
  • The bushes are suitable for rotational and oscillating movements 
pv
  • for grease lubrication: 2.8 N/mm² x m/s 
  • for oil lubrication: 10 N/mm² x m/s 
Permissible load
  • static: 140 N/mm² 
  • Rotation, oscillation: 70 N/mm² 
Sliding speed max.
  • 1 m/s
Friction coefficient
  • lubricated: 0.05 to 0.15 
Thermal expansion coefficient
  • 11 x 10-6 K-1 
Coefficient of thermal conductivity
  • 60 W/(m·K)
Note
  • Eine Erstschmierung mit Fett ist ratsam und eine durchgehende Schmierstoffbeigabe verlängert beträchtlich die Lebensdauer des Gleitlagers. 
  • Zu beachtende Rauhtiefe der Welle Ra < 0,8 µm. 
  • Zu beachtende Härte der Welle 150 < HB < 600. 
Temp. min.
  • -50 °C
Temp. max.
  • 150 °C
Surface pressure
  • 140 (≤ N/mm²) 
Material
  • CuSn8 bronze 
Application
  • Hydraulics 
Standard
  • ISO 3547 
  • DIN 1494 
All characteristics

Product description

Notes
An initial lubrication with grease is recommended and continual lubrication significantly increases the service life of the friction bearing.
Peak to valley height of shaft to be observed Ra <; 0.8 μm.
Hardness of shaft to be observed 150 <; HB <; 600.
Description
Maintenance-free operation.
Multi-lubricationable.
Not suitable for dirty conditions.
Shock and vibration resistant.
High permitted load.
Good friction characteristics.
No water absorption.
low play during operation.
Extremely space-saving.

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