DAIDYNE DDK55
This is an environmentally friendly, lead-free bearing material. Copper-tin alloy is sintered to a steel backing, and the bearing surface is a mixture of polytetrafluoroethylene (PTFE) and a special filler. It combines the low friction of this bearing surface with the strength and dimensional stability of the steel backing. Even if the inside diameter is machined for high precision, resin depth can be retained for low friction.
Product Details
Features
- High load capability.
- Low friction and high wear resistance with boundary and fluid lubrication.
- Elimination of stick-slip.
- Excellent chemical resistance.
- Broad temperature range.
- Inside diameter machinability.
Major Applications
Air conditioning equipment and gear pumps
Characteristics
| Specific Load MPa | Sliding Speed m/min | Service temp. Range °C (Min. to Max.) | Friction Coefficient μ | Tolerance of Foreign Particles | ||
|---|---|---|---|---|---|---|
| Normal | Max | Normal | Max | |||
| Below 49.0 | 137 | Below 180 (Boundary lubrication) | 240 (Boundary lubrication) | -200 ～ 280 | 0.01～0.1 (Boundary lubrication) | Low |
- On the actual application, the best performance in all categories would not be expected to be exerted simultaneously.
- Thermalloy, Daislide and Dailubo have general-to-special grades to meet various customer needs.
Target Properties
| Structure | Sliding Layer Component | Wear Resistance | Load Resistance | ||||
|---|---|---|---|---|---|---|---|
| No Lubrication | Grease | Boundary and Fluid | No Lubrication | Grease | Boundary and Fluid | ||
| With steel backing | PTFE+α | 5 (During cutting) | 4 (During cutting) | 5 (During cutting) | 5 (During cutting) | 5 (During cutting) | 5 (During cutting) |
| Tolerance of Foreign Particles | Sliding Speed | Friction Coefficient | Effect of Various Atmospheres | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| No Lubrication | Grease | Boundary and Fluid | No Lubrication | Grease | Boundary and Fluid | In Air | In Vacuum | In Water | In Vapor | In Acid or Alkali | |
| 3 (During cutting) | 3 (During cutting) | 4 (During cutting) | 5 (During cutting) | 4 (During cutting) | 4 (During cutting) | 5 (During cutting) | 5 (During cutting) | 5 (During cutting) | 3 (During cutting) | 3 (During cutting) | 3 (During cutting) |
- 5=Excellent 4=Very good 3=Good 2=Inadequate 1=Failure
- ※ In an acid/alkaline atmosphere, the evaluation may bring different results. We recommend a sample test in such case. Please feel free to contact us with questions about the application under special conditions.
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