"Tiny Cooling Fan" Now more and more choice of ball bearings, which is the trend, then the ball does what advantages and disadvantages?
"Tiny Cooling Fan" The advantages of using a ball bearing
A metal beads belong to the contact point of the operation, so it is easy to activate operation
B can be used often placed at different angles and direction of the operation of the portable products (but to prevent disorderly fall or fall)
C long life (compared to oil-bearing)
"Tiny Cooling Fan" with the shortcomings of the ball bearings
A bearing structure is quite fragile and can not withstand the force of the impact
When B motor rotates, rolling metal beads will have a greater the noise
C high prices, can not compete with oil-bearing on the cost price
Source and amount of demand for ball bearings D, difficult to control
E elastic spring ball and it is positioned on the assembly more difficult