Nylon Protector, Block, Wear Test

Nylon Protector, Block

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 BLOCK 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 & UM 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

• Block Item:
  • aftermarket_1.
  • aftermarket_2.
  • UM (Block 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

Wear test with Steel

Counterpart is Steel S30C

Compression

Block Item	Block Compression at 3mm deflection (kg)
aftermarket_1	200
aftermarket_2	185
UM, Block self-lubricated composite	238

More Information

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