Industrial bearings for industrial technology, automotive, utility vehicles, mechanical Engineering

Bearing element in shock absorbers

PRODUCT USED

KS Permaglide® plain bearing bushing, design PAP … P203/P141
Material: Permaglide® KS P203 and KS P141

FUNCTION

Shock absorbers absorb mechanical vibrational energy. Coupled with springs, they are installed on the chassis in order to ensure that vibrating masses are damped as quickly as possible. On motor vehicles, they represent a safety-relevant component in the form of hydraulic twin-tube dampers. Damping is carried by means of movement and internal friction of viscousfluids, usually oils, that ow from one working area to the other in the damper in accordance with the direction of movement of the vibration occurring. Mass-spring-damper systems are coordinated with one another, meaning that no undesired high amplitudes or uncontrollable vibrations are to result.

DEMANDS

From the asphalt road to the dirt track, from extremely low to very high temperatures, and, on top of that, load changes, wet conditions, dirt: shock absorber systems must prove themselves to be absolutely reliable under extremely various conditions. Space-saving and optimally coordinated plain bearings play a major role here. In order to not affect the damping characteristics, the friction values of the plain bearings have to be continuously low over the entire lifecycle. The plain bearings also have to be wear. resistant, insensitive to edge loads and resistant to flow erosion.

BEARING WITH KS PERMAGLIDE® P203 AND P141

KS Permaglide® P203 is a lead-free, environmentally friendly bearing material with a very high performance. The material is designed as a low-maintenance and lead-free material and is approved for a temperature range from –200°C to 130°C. It is compatible with all types of oils and does not have a tendency to undesired swelling. The material has proved itself to be extremely suitable in shock absorbers, even in the case of insufficient lubrication, as well as in use on road surfaces.

In the case of chassis where maximum performance is required, shock absorbers are used with plain bearing bushings made from KS Permaglide® P141. KS Permaglide® P141 is a highperformance material with a particularly high resistance to low erosion and an operating temperature of up to 250°C. KS Permaglide® P141 therefore impresses in systems with liquid lubrication as well as – thanks to its self-lubricating PTFE matrix – in dry-running applications.

ADVANTAGES OF KS PERMAGLIDE® P203 PLAIN BEARING BUSHES

  • Low wear
  • Very good emergency running properties
  • Insensitive to edge loads
  • Insensitive to impact loads
  • Good damping characteristics
  • Good chemical resistance

ADVANTAGES OF KS PERMAGLIDE® P141 PLAIN BEARINGS

  • Can be used universally
  • Low friction values
  • High wear resistance
  • Resistant to erosion
  • Extremely good performance in dry running as they are self-lubricating

DESCRIPTION OF MATERIAL

KS Permaglide® P203 is a lead-free, environmentally friendly bearing material with a very high performance. Thanks to a special combination of bulking agents, high wear resistance is achieved while simultaneously maintaining very good emergency running behaviour. Plain bearing bushings made from KS Permaglide® P203 are ready to be installed and have a smooth sliding surface.

KS Permaglide® P141 is a lead-free bearing material that is used particularly in systems with liquid lubrication and a high degree of mixed friction. Grease as a lubricant is only recommended conditionally. Furthermore, KS Permaglide® P141 can also be used in dry running. KS Permaglide ® P141 is characterised by a low friction value, very good emergency running properties and high resistance to low erosion. Thisvmaterial system meets the requirements of EU Directive 2000/53/EC (EU End of Life Vehicle Directive).

 

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