Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Key Benefits
- Lower coefficient of friction compared to Kestamid®
- High wear resistance
- High vibration resistance
- Highly crystallized structure
- Good performance with corrosive environment
- Higher dimensional stability
- Lower water absorption compared to Kestamid®
- High impact strength
- Low heat accumulation on the surface
- Resistance to corrosion
- Perfect resistance to many chemicals
- Easy to machine
- Works silently and without impacts
- Self lubricating
- Natural color where in contact with food and medicine
- Increase component lifespan
- Excellent wear and abrasion resistance
- Ideal for environments where lubrication is difficult or impossible
- Provides a lubricated environment as a result of internal lubrication
- Products Features
Implicit in its nature, it has many properties that no other material has in combination. It is ideal for bearings without lubrication and for guides. Lubricants and impact and wear resistance increasing additives are added during production to turn Kestamid® into Kestoil®. As bearing material, Kestoil® has a wear resistance 4 times the standard cast polyamide. This considerable result comes from the fact that the self-lubricating characteristic of the material keeps the coefficient of friction low during operation and thus prevents formation of heat between components that rub against each other. In the absence of self-lubrication, friction is reduced by external lubrication. Yet heat that is formed when lubricant is diminished or totally cleared away shortens material life due to increasing wear.
Applications & Uses
- Markets
- Applications
- Plastics & Elastomers End Uses
- Applications
- Wear pads
- Sheaves
- Support rails
- Rollers
- Guide plates
- Bearings
- Spacers
- Bushes etc
- Applications & Uses
Kestoil® should be preferred in applications where dimensional stability and weatherability of Kestamid® are questionable. As additives fill up pores, humidity and water absorption are reduced; sustaining dimensional stability. As the lubricant additive in Kestoil® is liquid, in high pressure and bearing applications liquid oil may leak out. In such applications, solid lubricant does not leak out, making Kestlub® a better choice.
Properties
- Color
- Physical Form
- Mechanical Properties
Value Units Test Method / Conditions Tensile Strength at Break 750 Kg/cm² 527 Tensile Modulus of Elasticity 4000 Mpa 527 Elongation at Break min. 30 % 527 Impact Strength (Charpy, Unnotched) No break Kj/m² 179 Compressive Stress 950 Kg/cm² 604 Impact Strength (Izod, Notched) 6 Kj/m² 180 Compressive Modulus 2500 MPa 604 K Factor 1.2x10^-6 mm³/Nm - Coefficient of Friction (Dynamic) 0.15 - - Hardness 83 Shore D 868 Wear Resistance 0.11 mg/km - - Thermal Properties
Value Units Test Method / Conditions Coefficient of Linear Thermal Expansion 8x10^-5 °C-1 11359 Maximum Allowable Service Temperature in Air - Short Term 170 °C - Melting Temperature 220 °C - Maximum Allowable Service Continuous Temperature in Air – Continuous 110 °C - - Typical Properties
Value Units Test Method / Conditions Density 1.14 g/cm³ 1183 Water Absorption (Saturation in Water of 23°C) 5 % 62 - Electrical Properties
Value Units Test Method / Conditions Dielectric Coefficient 3.7 - 60250 Electric Strength 25 Kv/mm 60243 Volume Resistivity min. 10^14 Ohm-cm 60093 Surface Resistivity min. 10^13 Ohms 60093 Surface Resistivity min. 10^13 Ohm 60093