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BK-2- 70 50

Bush BK-2 70x50 metal/POM
BK-2-7050

The product image may differ

BK-2-7050
BK-2-7050 BK-2-7050
d
70 mm
D
75 mm
L
50 mm
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Article

BK-2- 10 20 BK-2- 15 25 BK-2- 20 15 BK-2- 20 20 BK-2- 20 25 BK-2- 20 30 BK-2- 22 25 BK-2- 22 30 BK-2- 24 15 BK-2- 24 25 BK-2- 25 15 BK-2- 25 20 BK-2- 25 25 BK-2- 25 30 BK-2- 28 25 BK-2- 28 30 BK-2- 30 20 BK-2- 30 30 BK-2- 30 40 BK-2- 32 25 BK-2- 32 30 BK-2- 32 40 BK-2- 35 20 BK-2- 35 30 BK-2- 35 35 BK-2- 35 40 BK-2- 35 50 BK-2- 40 20 BK-2- 40 30 BK-2- 40 40 BK-2- 40 50 BK-2- 45 30 BK-2- 45 40 BK-2- 45 45 BK-2- 45 50 BK-2- 50 30 BK-2- 50 35 BK-2- 50 40 BK-2- 50 50 BK-2- 50 60 BK-2- 55 40 BK-2- 55 60 BK-2- 60 30 BK-2- 60 40 BK-2- 60 50 BK-2- 60 60 BK-2- 60 70 BK-2- 65 60 BK-2- 70 30 BK-2- 70 40 BK-2- 70 50 BK-2- 70 70 BK-2- 70 80 BK-2- 75 40 BK-2- 80 40 BK-2- 80 50 BK-2- 80 60 BK-2- 80 80 BK-2- 85 60 BK-2- 90 40 BK-2- 90 60 BK-2- 90 80 BK-2- 90 90 BK-2- 95 60 BK-2- 100 60 BK-2- 110 60 BK-2- 120 60 BK-2- 125 60 BK-2- 130 60 BK-2- 130 80
Product details for

BK-2- 70 50

d
70 mm
D
75 mm
L
50 mm
f1
1.2 mm
f2
0.6 mm
g
8 mm
All characteristics

Characteristics

pv
  • operation with lubrication: 5 N/mm² x m/s 
Permissible load
  • static: 140 N/mm² 
  • rotation, oscillation: 70 N/mm² 
Sliding velocity
  • dry run = 2 m/s 
  • hydro-dynamic operation: 5 m/s 
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)
Surface pressure
  • 140 (≤ N/mm²) 
Application
  • attachment lugs of pneumatic and hydraulic cylinders 
  • Conveyor systems, textile machinery, automobiles ... 
  • BK-2 bushings are suitable for rotational and oscillating movements. 
Construction type
  • multi-lubrication, POM coated plain bearing 
Construction type addition
  • with lubrication pockets 
Friction coefficient
  • dry: 0.15 to 0.25 
  • lubricated: 0.05 to 0.15 
Material
  • steel back onto which a porous bronze layer is sintered 
  • the POM acetal resin is subsequently rolled into the bronze layer 
Standard
  • ISO 3547 
  • DIN 1494 
Surface
  • zinc or copper plated 
Temp. max.
  • 100 Â°C
Temp. min.
  • -20 Â°C
Customs tariff number
  • 84833080 
All characteristics

Product description

Notes
An initial lubrication with grease is recommended and continual lubrication significantly increases the service life of the plain bearing.
To be observed: peak to valley height of shaft Ra < 0.8 µm.
Observed hardness of shaft > 150 HB
Description
Maintenance-free operation.
Geräusch- und Schwingungsabsorption.
Relubricable.
Hydrodynamischer Betrieb möglich.
High permitted load.
Good friction characteristics.
Hohe Gleitgeschwindigkeit.
No water absorption.
Bei schwer realisierbarem Ölfilm zu verwenden.
Low backlash during operation.
Extremely space-saving.

Product variants

70 Results
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Show dimensional drawing
Identifier
d (mm)
D (mm)
L (mm)
f1 (mm)
Details / items
BK-2- 10 20
10 mm
12 mm
20 mm
0.5 mm
Learn more
BK-2- 15 25
15 mm
17 mm
25 mm
0.5 mm
Learn more
BK-2- 20 15
20 mm
23 mm
15 mm
0.8 mm
Learn more
BK-2- 20 20
20 mm
23 mm
20 mm
0.8 mm
Learn more
BK-2- 20 25
20 mm
23 mm
25 mm
0.8 mm
Learn more
BK-2- 20 30
20 mm
23 mm
30 mm
0.8 mm
Learn more
BK-2- 22 25
22 mm
25 mm
25 mm
0.8 mm
Learn more
BK-2- 22 30
22 mm
25 mm
30 mm
0.8 mm
Learn more
BK-2- 24 15
24 mm
27 mm
15 mm
0.8 mm
Learn more
BK-2- 24 25
24 mm
27 mm
25 mm
0.8 mm
Learn more

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