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Cotten/Phenolic laminated tube for Rudder pintle bush
Cotton/Phonolic laminated tube for Marine bearing
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RISHOLITE Cotton/Phenolic laminated tubes are also provided as marine bearing called "Rudder pintle bush"
And certificated by the marine associations in many countries, such as Japan,UK,USA,France or Germany.(Further)
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General properties of RISHO Cotton/Phenolic laminated tubes for Rudder pintle bush
| Test items |
Unit |
Test result |
| PR-2222 |
PR-2123 |
| Specific gravity |
- |
1.29 |
1.36 |
| Rockwell hardness |
M scale |
83 |
95 |
| Tensile strength |
MPa |
54 |
76 |
Izod impact strength
(Parallel to layer) |
J/m |
83 |
69 |
Flexural strength
(Perpendiclar to layer) |
MPa |
86 |
138 |
| Cleavage strength |
kN |
8.90 |
9.42 |
| Compressive strength |
Parallel to layer |
MPa |
211 |
282 |
| Perpendiclar to layer |
177 |
180 |
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Properties
Low coefficient of friction
Coefficient of friction undert water lubrication is 0.01～0.05.
This is ideal property as marine bearing.
Excellent in wear resistance
After certain time of operation , abrasion loss becomes small.
Excellent in mechanical strength
- Mechanical strength per unit weight is equal to metallic bushes
- Lighter than aluminium bushes.
- Also excellent in compressive strength
Excellent in chemical strength
Excellent in chemical stability against Gasoline ,Acid or Organic chemical
Protection of Pintle's surface
Hardness is lower than bronze and hard foregin substances are sunk into bush's surface.
Rudder pintle's surface can not be damaged
Sticking free
Bushes can not be sticked to pintle's surface by friction heat
Various dimensional lineups
Product with 10mmΦ～2500mmΦ diameter are available according to customer's design
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