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BK-1 F

Sliding bush BK-1-F

Design
Maintenance-free PTFE coated friction bearing 
pv
Continuous operation: 1.8 N/mm² x m/s 
Short-term operation: 3.6 N/mm² x m/s 
Permissible load
static: 250 N/mm² 
low slide speed: 140 N/mm² 
Rotation, oscillation: 55 N/mm² 
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Characteristics

Design
  • Maintenance-free PTFE coated friction bearing 
pv
  • Continuous operation: 1.8 N/mm² x m/s 
  • Short-term operation: 3.6 N/mm² x m/s 
Permissible load
  • static: 250 N/mm² 
  • low slide speed: 140 N/mm² 
  • Rotation, oscillation: 55 N/mm² 
Sliding rate
  • Dry running = 2 m/s 
  • hydrodynamic operation: >2 m/s 
Thermal expansion coefficient
  • parallel to ring surface: 11 x 10-6 K-1 
  • perpendicular to ring surface: 30 x 10-6 K-1 
Coefficient of thermal conductivity
  • 40 W/(m·K)
Temp. min.
  • -200 °C
Temp. max.
  • 270 °C
Surface pressure
  • 250 (≤ N/mm²) 
Material
  • Steel back onto which a porous bronze layer is sintered 
  • subsequently a PTFE lead mixture is rolled into the bronze layer 
Surface
  • zinc or copper plated 
Application
  • BK-1 bushes are suitable for transmission, rotational and oscillating movements 
  • Rod guide for pneumatic and hydraulic cylinders 
  • Attachment lugs of pneumatic and hydraulic cylinders 
  • Conveyor-belt systems, textile machinery, automobiles ... 
Standard
  • ISO 3547 
  • DIN 1494 
All characteristics

Product description

Notes
Peak to valley height of shaft to be observed Ra <; 0.4 μm.
Hardness of shaft to be observed 350 <; HB <; 600.
Description
Suitable for dry running and maintenance-free.
Noise and frequency absorption.
hydrodynamic operation possible
High permitted load.
Good chemical resistance.
Good friction characteristics.
No stick-slip.
Broad temperature range.
High slide speed.
No water absorption.
low play during operation.
Extremely space-saving.

Overview of variants

17 Variants
Show table information
title
Identifier
d (mm)
d (mm)
L (mm)
D (mm)
e (mm)
F (mm)
f2 (mm)
f1 (mm)
L (mm)
d (mm)
L (mm)
D (mm)
e (mm)
F (mm)
f2 (mm)
f1 (mm)
D (mm)
d (mm)
L (mm)
D (mm)
e (mm)
F (mm)
f2 (mm)
f1 (mm)
e (mm)
d (mm)
L (mm)
D (mm)
e (mm)
F (mm)
f2 (mm)
f1 (mm)
Price / items
20 mm
11.5 mm
23 mm
1.5 mm
20 mm
16.5 mm
23 mm
1.5 mm
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