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What is the main caster?

1. the caster

refers to the main caster mounting pin on the front axle, an upper end slightly inclined inwards, thus between the kingpin axis and the ground is formed in the vertical vehicle transverse plane an angle, called the angle of inclination of the main pin. The inner angle of no more than 80, the main role is to make the self-aligning steering wheels, steering light.

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