Retaining Ring made of POM
Product specification
Retaining rings for shafts and axes with available nut
Rings with mounting lip for easy assembly and disassembly
Absorption of axial forces possible
Work like anti-friction washers
Chemical features:
Well suited for solvents, petrol, mineral oils and fats, alcohols and hydraulic fluids; resistant to weak acids and alkalis
Material properties:
POM features an interesting combination of strong hardness with dimensional stability and nevertheless high impact resistance
Shatter-proof
High toughness and hardness even at low temperatures
Very high resilience
Good resistance to stress cracking
Very good sliding and wear behavior, low friction values and good abrasion resistance
High fatigue strength with changing stress conditions
High dimensional stability under heat
Low water absorption
Very high dimensional stability, thus preferred material for precision, machine and apparatus construction; suitable for narrow tolerances
Good electrical properties
Approved for food
Weldable; bondable only after pretreatment
Technical specification
Material: POM (polyoxymethylene)
Colour: black
Density: 1.41 g/cm3 (DIN 53479)
Temperature range: -60 to +110 °C, for a short time +140 °C
Tensile modulus: 3,000 N/mm2 (DIN 53457)
Tensile strength: 70 N/mm2 (DIN 53455)
Elongation at break: 40 % (ISO 527)
Bending stress: 3,000 N/mm2
Rockwell hardness R: M 86
Ball pressure hardness (30 s): 174 MPa (ISO 2039-1)
Notch impact strength: 7 - 8 kJ/m2 (DIN 53453)
Water absorption: 0.7 % (10 d, +25 °C)
Coefficient of
thermal conductivity: 0.37 W/m * K (DIN 52612)
Flammability rating: UL 94 HB
Oxygen index: 15 % (ASTM D 2863)
Dielectric strength: approx. 30 kV/mm at 1.5 mm thickness (DIN 53481)
Volume resistivity: 1015 - 1017 Ohm x cm (DIN 53482)
Surface resistance: approx. 1015 Ohm (DIN 53482)
Item | Image |
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h mm
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Price Euro* | Buy |
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Item
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Image
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d mm
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D mm
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g mm
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h mm
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H mm
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Price Euro* |
Buy
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308904 |
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2,3 | 6 | 3 - 4 | 1 | 1,5 | 50 | 22.00 | |
308905 |
|
2,3 | 6 | 3 - 4 | 1 | 1,5 | 100 | 35.00 | |
308906 |
|
3,2 | 7 | 4 - 5 | 1 | 1,4 | 50 | 22.00 | |
308907 |
|
3,2 | 7 | 4 - 5 | 1 | 1,4 | 100 | 35.00 | |
308908 |
|
4 | 9 | 5 - 7 | 1,1 | 1,5 | 50 | 24.00 | |
308909 |
|
4 | 9 | 5 - 7 | 1,1 | 1,5 | 100 | 39.00 | |
308910 |
|
5 | 11 | 6 - 8 | 1,1 | 1,6 | 50 | 24.00 | |
308911 |
|
5 | 11 | 6 - 8 | 1,1 | 1,6 | 100 | 39.00 | |
308912 |
|
7 | 14 | 8 - 11 | 1,3 | 1,8 | 25 | 26.00 | |
308913 |
|
7 | 14 | 8 - 11 | 1,3 | 1,8 | 50 | 45.00 | |
308914 |
|
9 | 18,5 | 10 - 14 | 1,4 | 2,1 | 25 | 26.00 | |
308915 |
|
9 | 18,5 | 10 - 14 | 1,4 | 2,1 | 50 | 45.00 | |
308916 |
|
12 | 23 | 13 - 18 | 1,7 | 2,7 | 25 | 30.00 | |
308917 |
|
12 | 23 | 13 - 18 | 1,7 | 2,7 | 50 | 52.00 |