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Video Brakes
Video Single-circuit System
Video Dual-circuit Brake
Video Disc Brake
Video Turning Brake-discs
Video Disc parking brake
Video Drum Brake 1
Video Drum Brake 2
Video Drum Brake 3
Video Engine Brake
Video Master Cylinder 1
Video Master Cylinder 2
Video Brake Pad
Video Brake Pad 2
Video Brake Pad 3
Video Brake Fluid 1
Video Brake Fluid 2
Video Brake Servo
Video Brake assist system
Video Electr. Brake Servo
Video ABS 1
Video ABS 2
Video ABS 3
Video ABS 4
Video ABS/ESP-Hydr. Unit
Video ESP 2
Video Wheel sensor 1
Video Wheel sensor 2
Video Parking Brake
Video Overrun Brake 1
Video Overrun Brake 2
Video Brake recuperation 1
Video Brake recuperation 2
Video Brake recuperation 3
Video Elektro-hydr. Brake 1
Video Elektro-hydr. Brake 2
Video Calliper (electr. brake)
Video Brake Test Stand 1
Video Brake Test Stand 2
Video Floating Brake
Video Sliding-calliper 1
Video Sliding-calliper 2
Video Sliding-calliper 3
Video Sliding-calliper 4
Video Brake doesn't release
Video Disc-brake Caliper
Video Disc brake failure 1
Video Disc brake failure 2
Video Fixed-calliper 1
Video Fixed-calliper 2B
Video Fixed-calliper 3
Video Parking Brake 1
Video Parking Brake 2
Video Parking Brake 3
Video Parking Brake 4
Video Carbon Brake Disc
Video Ventilated Disc 1
Video Ventilated Disc 2

Video Compressed Air Brake 1
Video Compressed Air Brake 2
Video Electr. Compr. Air Brake
Video Driving Preparation
Video Drum Brake (truck) 1
Video Drum Brake (truck) 2
Video Drum Brake (truck) 3
Video Drum Brake (truck) 4
Video Disc Brake (truck) 1
Video Disk Brake (truck) 2
Video Trailer Brake System
Video Handbrake
Video Brake-air Compressor
Video Water-drainage
Video Air Dryer
Video Pressure Regulator
Video Four-circuit Protection
Video Dual-circuit Brake
Video ALB Regulator
Video Diaphragm Cylinder 1
Video Spring-type Cylinder 1
Video Spring-type Cylinder 2

Video Force (brake)
Video Distance (brake)
Video Time (brake)
Video Brake (pedal-force)

Video Brake (general) 1
Video Brake (general) 2
Video Hydraulic brake 1
Video Pneum. Brake 1
Video Pneum. Brake 2

          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Disc Brake

Disc brakes almost only advantages (except hand brake effectiveness)

The disc brake, as a large series product, was introduced in the USA before the middle of the last century, in Europe thereafter. It can counteract a failure of the brakes by overheating (fading) especially well. At the front axle it avoids pulling. The removal of brake lining dust improves and the assembly is clearly simpler. Also the braking power differences of some drum brakes comparing forward and backward driving, are history.

Cast iron disc with sliding- or fixed caliper (upper class)

While braking, the coatings are pressed from the inside and outside onto a disc linked with the wheel mostly from grey iron, nodular graphite iron, steel or less often coal fibre materials. Because the caliper mechanism is connected to the wheel suspension, the brake disc and with it the wheel, is slowed down.Once in a blue moon you might come across a driven axle with disc brake positioned inside at the final drive. Brake tongs solidly linked with the suspension are called fixed caliper (figures on top). Here pistons operate from both sides on the disc / lining. If it is movable, one speaks of a sliding caliper (figure on the left). Older types are also called floating caliper. Here one or two pistons operate exclusively from the inside.

Pneumatically-operated disc brakes hot

The operation of the hand brake usually takes place via cables and levers at the wheel brake, the hydraulical foot brake makes use of brake fluid pressure onto one or more pistons and cylinders and in case of the pneumatically-operated brake via external diaphragm- or (again less often) piston cylinders. In case of air pressure as well as hydraulics, brake tongs reaching from the inside around the brake disc are possible to increase the friction area. The disc brake does not have self-reinforcing powers. Therefore, e.g., the pistons and with it the operating forces are higher. Heat and dust can be led away quite well due to the open arrangement. Internal ventilation and outside ventilation of the brake disc (figures 1 and 3) may increase this effect.

Only very small motorcycles do not feature disc brakes.

Almost all motorcycles feature discbrakes. Passenger cars have them at least in front, most often also in the rear. Just smaller, low weight cars have drum brakes in the rear.The distribution of pneumatically-operated disc brakes is clearly increasing for busses and trucks. Also modern and fast track-vehicles feature this technique. 02/09

Disc brake noise measurement with laser technology

Noises measure when braking - click to enlarge!

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2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

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