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Nylon Protector
In order to meet the quality/performance required from the marketing, Dr.Pulley devote several years of formula development and field-testing.
Now in the market, the Dr.Pulley Protector has the best overall properties of
- Non-abrasive to Aluminum part.
- Low friction coefficient.
- High service temperature.
- High compression resistant strength.
- High wear-resistant for both steel and Aluminum material.
The wear test produced valuable data on the comparative performance of the materials, as below:
Test Condition
The high performance engineering plastic test samples from aftermarket & Dr.Pulley slide against Steel and Aluminum separately, remaining all condition are same.
Constant condition
- Normal load: 40 kg.
- Testing Temp: 150℃.
- Environmental Temp. : 25 ℃.
- Humidity: 70%.
- Testing time: 100,000 stroke.
Variable Condition
- Nylon Protector Item:
- aftermarket_1.
- aftermarket_2.
- Dr.Pulley (Protector self-lubricated composite).
- Counterpart:
- Steel plate S30C.
- 6061-T6 Aluminum Alloy plate (Hardness Shore D 95/97, same as Aluminum Variator ).
Wear test with Aluminum
Counterpart is Aluminum 6061-T6
Various Protector Weight Loss
| Item | Nylon Protector Weight Loss (g) |
| aftermarket_1 | 0.3123 |
| aftermarket_2 | 0.2185 |
| Dr.Pulley, Nylon Protector, self-lubricated composite | 0.0260 |
Total Wear
| Item | Total Weight Loss (g) |
| aftermarket_1 | 0.7818 |
| aftermarket_2 | 0.5143 |
| Dr.Pulley, Nylon Protector, self-lubricated composite | 0.0298 |
Aluminum Weight Loss
| Item | Aluminum Weight Loss (g) |
| aftermarket_1 | 0.4695 |
| aftermarket_2 | 0.2958 |
| Dr.Pulley, Nylon Protector, self-lubricated composite | 0.0038 |
Wear test with Steel
Counterpart is Steel S30C
Various Nylon Protector Weight Loss
| Item | Nylon Protector Weight Loss (g) |
| aftermarket_1 | 0.0600 |
| aftermarket_2 | 0.0481 |
| Dr.Pulley, Nylon Protector, self-lubricated composite | 0.0228 |
Total Wear
| Item | Nylon Protector compression at 3mm deflection (kg) |
| aftermarket_1 | 0.0623 |
| aftermarket_2 | 0.0488 |
| Dr.Pulley, Nylon Protector, self-lubricated composite | 0.0270 |
Steel Weight Loss
| Item | Steel Weight Loss (g) |
| aftermarket_1 | 0.0023 |
| aftermarket_2 | 0.0007 |
| Dr.Pulley, Nylon Protector, self-lubricated composite | 0.0042 |
Compression
| Item | Nylon Protector Compression at 3mm deflection (kg) |
| aftermarket_1 | 200 |
| aftermarket_2 | 185 |
| Dr.Pulley, Nylon Protector, self-lubricated composite | 238 |
More Information
Our Youtube url : https://www.youtube.com/c/DrPulley
