how to choice The selection of balcony door pulleys

The selection of balcony door pulleys should consider the following aspects:

1. Quietness: When choosing a pulley, pay attention to its quietness. 

High-quality pulleys are often silently optimized on the bearings and the pulley plastic to reduce noise during sliding.

about pulley plastic choosing narmally will by nylon ,pom,pok,pp,etc etc.

2. Load-bearing capacity: The load-bearing capacity of the balcony pulley is also very important. 

If you need to push and pull the balcony door frequently,

 choose pulleys with strong load-bearing capacity to improve the use experience.

3. Corrosion resistance: If the balcony door is often exposed to sunlight or a humid environment,

 the pulleys may be corroded. Choosing a pulley with good corrosion resistance can ensure its long service life.

4. Wear resistance: The wear resistance of the pulley is also critical, especially for balcony doors that need to be pushed and pulled frequently.

 Choose a pulley with good wear resistance to ensure a long service life.

5. Sealing of the balcony wheel seat: The wheel seat of the pulley is well sealed, 

which can prevent water vapor from entering and ensure the smoothness of the wheel. 

Therefore, choosing a wheel seat with good sealing is also the key.

In general, choosing a suitable balcony door pulley needs to consider factors such as its quietness, load-bearing capacity, wear resistance, corrosion resistance and wheel seat sealing.