1. Long maintenance cycle, good braking performance, good heat dissipation and high temperature resistance.
2. The axle beam is not easy to bend, so the tire is saved, and the bearing force is more reasonable under heavy load.
3. The clearance between the bearing and the shaft head is matched, the lubrication effect is good, and the resistance is smaller, so that it has good high-speed performance and fuel saving.
4. S-type cam head design and adjustable air chamber sub pump hole make its braking force greater and running light.
