OKS LogoOKS Spezialschmierstoffe GmbH


Tribology

 
 
Select Keyword
Search
 
Tools:
  • print

Pastes

for easy assembly and dismantling

The structure of pastes corresponds in principle to that of greases. However, the share of solid lubricants is clearly higher. Thus a reliable lubricating, parting and corrosion protection effect is ensured even when used under extreme temperature and pressure conditions and aggressive media. Pastes are used at screw threaded connections as well as for pressing in pins and bolts, at gearwheels, chucks, hinges and plain bearings.

 

 Characteristics  Standard Description
 Press-fit-test   Provides information on the lubricating effect of pastes at a very high pressure and low sliding speed (relevant for assembly pastes)
 Thread friction coefficient  DIN 946 The coefficient of sliding friction μ when tightening screws and nuts is determined on a screw test bench (relevant for screw pastes)
 Breakaway torque

 DIN 267-27

Ratio of the breakaway torque required when loosening the screwed connection to the tightening torque
 Operating temperature  

Lubrication: Oil and solid lubricants are effective
Separation: After volatising of the oil separation effect through solid lubricants

 

The range of applications of pastes depends considerably on the solid lubricants contained.

 

Solid lubricant

Maximum operating
temperature [°C]
 Field of application
 PTFE  < 300 Assembly, media influence

 MoS2

 < 450 Assembly, press-on processes
 Aluminium  < 1100 High-temperature screwed connections
 Copper  < 1100 High-temperature screwed connections, "anti-seize" paste, electrical conductivity
 Nickel  < 1400 Extreme-temperature screwed connections
 "Oxides"
ceramics
 < 1400 Extreme-temperature screwed connections, special-steel screwed
connections