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BK-2

Sliding bush BK-2

Characteristics

Design
  • Multi-lubrication, POM coated friction bearing 
Construction type
  • with lubrication pockets 
pv
  • Operation with lubrication: 5 N/mm² x m/s 
Permissible load
  • static: 140 N/mm² 
  • Rotation, oscillation: 70 N/mm² 
Sliding rate
  • Dry running = 2 m/s 
  • hydrodynamic operation: 5 m/s 
Friction coefficient
  • dry: 0.15 to 0.25 
  • lubricated: 0.05 to 0.15 
Thermal expansion coefficient
  • parallel to ring surface: 11 x 10-6 K-1 
  • perpendicular to ring surface: 48 x 10-6 K-1 
Coefficient of thermal conductivity
  • 32 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 200 < HB < 600. 
Temp. min.
  • -20 °C
Temp. max.
  • 100 °C
Surface pressure
  • 140 (≤ N/mm²) 
Material
  • Steel back onto which a porous bronze layer is sintered 
  • subsequently the acetal resin POM is rolled into the bronze layer 
Surface
  • zinc or copper plated 
Application
  • Attachment lugs of pneumatic and hydraulic cylinders 
  • Conveyor-belt systems, textile machinery, automobiles ... 
  • BK-2 bushes are suitable for rotational and oscillating movements 
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 200 <; HB <; 600.
Description
Maintenance-free operation.
Noise and frequency absorption.
Multi-lubricationable.
hydrodynamic operation possible
High permitted load.
Good friction characteristics.
High slide speed.
No water absorption.
To be used when oil film formation difficult.
low play during operation.
Extremely space-saving.

Product variants

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