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Brake Disc What Are The Advantages And Disadvantages Of Disc Brakes?
May 16, 2017

Brake Disc What are the advantages and disadvantages of disc brakes? The rotating element in the disc brake friction pair is a metal disc that operates on the end face and is called a brake disc. The friction element engages the brake disc from both sides to produce a brake. Fixed elements are a variety of structural forms, in general, disc brakes can be divided into two types of chuck and pan.

  advantage

  The friction effect of the brake is less affected by the friction coefficient, that is, the performance is more stable; the effectiveness of the water after the reduction is less, and only one or two braking can be restored to normal; in the output braking torque the same , The size and quality of the brake disc are generally small; the amount of thermal expansion of the brake disc in the thickness direction is extremely small, and the brake pedal stroke is not excessively increased as in the case of the thermal expansion of the brake drum, and the brake pedal stroke is excessively large; Automatic adjustment, other maintenance work is also easier.

  1, thermal stability is better. Because the size of the brake friction pad is not long, the working surface area is only 12% to 6% of the brake disk area, so the heat dissipation is better.

  2, water stability is better. Because the brake pad on the disk unit pressure is high, easy to squeeze out the water, while the role of centrifugal force after the water is also easy to get rid of, coupled with the pad on the disc wipe effect, so after the water only by One, the second brake that can return to normal; and drum brakes are required to go through more than ten times the brake can be restored to normal braking performance.

  3, braking torque and car forward and backward driving has nothing to do.

  4, the output of the same size of the braking torque conditions, the quality and size of disc brakes smaller than the drum.

  5, disc-type friction pad than the drum-type friction lining after wear easier to replace, the structure is relatively simple, easy maintenance.

  6, the gap between the brake disc and the friction lining is small (0.05 ~ 0.15mm), which shortens the operation time of the cylinder piston and makes the force transmission ratio of the brake drive mechanism increase.

  7, the thermal expansion of the brake disc does not cause the brake pedal stroke loss as the thermal expansion of the brake drum, which also simplifies the design of the gap automatic adjustment device.

  Disadvantages

  Brake Disc Disc brakes have their own flaws. For example, the brake and brake pipe manufacturing requirements are higher, friction plate wear and tear larger, costly, and because the friction plate area is small, the relative friction of the work surface is also small, the required brake hydraulic pressure, must To help the device to use the device is less effective, so for the hydraulic brake system required brake actuation pipe pressure is higher, generally use the servo device.

  Brakes are brutal. Two friction discs with a friction lining can slide back and forth on the spline shaft, which is the rotating part of the brake. When the brake, in a very short time to stop the vehicle. Coupled with the pressure on the platen on the tilt angle can not be infinite, so the brake is not smooth.