HANSA-FLEX AG
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Date: 2017-10-19

BK-1

BK-1

Sliding bush BK-1
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 x K)-1
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
BK-1 F

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
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 x K)-1
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
BK-2

BK-2

Sliding bush BK-2
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 x K)-1
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
BK-2 bushes are suitable for rotational and oscillating movements
Attachment lugs of pneumatic and hydraulic cylinders
Conveyor-belt systems, textile machinery, automobiles ...
Standard
ISO 3547
DIN 1494