RotorRotorPad (friction material)PadPiston(application mechanism)Hydraulic piston123Drum (rotor)グン機LiningDrumHydraulic piston123Piston(applicationmechanism)Disc rotorPadPadShimDisc brake caliperPad clipPin bootMountingbracketGuide pinLock pinCylinder bodyBoot ringPiston sealPiston bootBleeder screwBleeder screw capPistonBrake shoeBrake liningDrumDrumBrake shoeAdjusterBrake liningParking brake leverAnchor plateBack plateReturn springPistonWheel cylinderBleeder screwLining (friction material)Types of BrakesWhat is a Brake?Basic Principles of BrakesCOLUMNHere we explain the structure and function ofAkebono’s core product—brakes.It is a device that utilizes friction to cause a vehicle to decelerate and/or stop by converting kinetic energy into heat energy. Sudden braking at 100 km/h generates enough heat to raise the tempera-ture of two liters of water from 0°C to boiling (100°C). Brakes are relatively small compared with other major automobile components, and the space where they are mounted is restricted. Complex controls are required to absorb the output power of the engine and brake safely. Brakes are considered an important safety component in an automobile because of their key role in ensuring vehicle safety.Each of the four wheels on an automobile is equipped with a brake. Depending on the usage and characteristics of the car, the wheels may have disc brakes or drum brakes. Disc brakes have the capability to stop a car in a stable manner even at a high speed, while drum brakes have the capability to stop heavier vehicles. A vehicle can be equipped with different combinations of disc and drum brakes. Some vehicles use disc brakes on the front and rear wheels, while others use disc brakes on the front and drum brakes on the rear. Drum BrakesDisc BrakesBrake pads clamp the rotor to stop its rotationLining is pushed out to drum from theinside to stop its rotationMain Components of Drum BrakesMain Parts of Disc BrakesAKEBONO REPORT 201615

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