Hybrid greases of the SYN-setral-SINT series - New Grease Generation

Due to the ever-increasing development of new types of production processes, materials and service lives, industry is constantly placing new demands on lubricants. It is not uncommon for these applications to present the lubricant with extreme conditions in terms of temperature, environment (dusty, aggressive chemicals, etc.) and physical stress. 

Accordingly, setral® offers a new innovative PFPE lubricant generation (SYN-setral-SINT series) that meets these demands and is available in different variants. In contrast to conventional PFPE products, the new grease generation is a more cost-effective hybrid solution, especially for the temperature range between +150°C to +200°C. However, conventional PFPE products are unbeaten in the high-temperature range above 200°C. 

Initial situation

• PFPE are not miscible
• Problems with corrosion protection residues in PFPE solid products
• Price/benefit ratio at low temperatures
• high specific weight (density) of approx. 1.9 g/cm³

PFPE properties

Evaporation test at °C

Advantages of SINTs

Successfully used in...

• ... Rotational moulds

  Branch: Plastics industry for large plastic parts

  Lubrication point: Bearing

  Challenges:

  • up to 250°C
  • high loads
  • partly aggressive vapours
• ... Film stretching

  Branch: Plastic industry (BOPP/BOPET)

  Lubrication point: Bearing

  Challenges:

  • high temperatures
  • long re-lubrication intervals
• ... Chocolate production

  Branch: Food/confectionery industry

  Lubrication point: Mechanical seal with bearing

  Challenges:

  • 120°C
  • Contact medium palm oil
  • H1
• ... Transport wagons

  Branch: Engineering, Foundry, Precision machining, Electrical engineering and machine tool building

  Lubrication point: Bearings in large wagons

  Challenges:

  • 200°C – 220°C
  • extended re-lubrication intervals
• ... Door manufacturing

  Branch: Construction industry

  Lubrication point: Bearing in the transport system of the tunnel kiln

  Challenges:

  • silicone-free
  • T: 24 min @ 200°C
  • low v: 8 m/min
• ... Overpaintability

  initial situation:

  • a PFPE/PTFE product is used in paint shops at 210°C
  • Production24/7
  • Karter problems on the painted parts
  • silicone-free, temperature-stable product required that can be painted over

   

  Conclusion:

  • Coating test -> respectable results
  • excellent long-term thermal stability -> still very good lubrication after 200h @ 220°C
  • innovative grease structure
  • very good load carrying (EP) and wear reducing (AW) properties