Hollow Bar in PEEK Mod 76.2 mm black
Variants
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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
Additives
| 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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