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PEEK blank tubes

Hollow Bar in PEEK Mod 76.2 mm black

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PEEK Mod is PEEK rebuilt into a bearing grade. Mod means that the base plastic is blended with carbon fiber, graphite and PTFE, developed for bearings and sliding surfaces, and that mix gives a surface that slides easily and lasts a long time against steel without lubricating oil.

The base is the same tough PEEK, a high performance plastic for the toughest environments, semi-crystalline with a melting point at 341 degrees. The material runs continuously at 260 degrees and takes 300 degrees for short periods, picks up hardly any water and burns slowly with fire class V-0. That makes Mod a first choice for plain bearings and wear parts that have to run dry in a hot environment, where oil is not an option.

This hollow bar is in black PEEK Mod with a 76.2 mm outside diameter. A hollow bar has a ready hole in the middle, so you can turn out smaller plain bushings and bearing sleeves with minimal waste. The slimmer dimension is handy for plain bushings in normal sizes.

Technical specifications

Format
Ämnesrör
Additives
Carbon Fiber (CF)
Graphite
PTFE
Property Value Unit Test standard
Density & Weight
Density 1,44 g/cm³ ISO 1183
Moisture Absorption
Moisture absorption (23°C/50% RH) 0,04 Procent Plast - Bestämning av vattenabsorption
Tensile Properties
Yield Stress 84 MPa ISO 527-2
Tensile Modulus of Elasticity 5500 MPa ISO 527-2
Strain at Yield 3 % ISO 527-2
Tensile Strain at Break 3 % ISO 527-2
Flexural Properties
Flexural Strength 142 MPa ISO 178
Flexural Modulus of Elasticity 6000 MPa ISO 178
Impact Resistance
Charpy Notched Impact Strength 5 kJ/m² ISO 179
Charpy Unnotched Impact Strength 28 kJ/m² ISO 179
Hardness
Shore D Hardness 87 Shore D Shore D
Compressive Properties
Compressive Strength 102 MPa ISO 604
Compressive Modulus 4000 MPa ISO 604
Temperature Limits
Melting Point 341 °C ISO 3146
Max. Service Temperature (short-term) 300 °C
Max. Continuous Service Temperature 260 °C
Heat Deflection Temperature (HDT/A) 315 °C ISO 75
Glass Transition Temperature 146 °C ISO 3146
Thermal Conductivity
Thermal Conductivity 0,82 W/(m·K) DIN 52612
Thermal Expansion
Coefficient of Linear Thermal Expansion 3 x 10⁻⁵ ISO 11359-2
Insulation Properties
Volume Resistivity 10⁷ till 10¹² IEC 60093
Static Dissipation
Surface Resistivity 10⁴ till 10¹¹ IEC 60093
Flammability Rating
Flammability Rating (UL 94) UL 94 V-0 UL 94

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