Automobile Brake Pads E11- Emark Licence IATF16949 Quality Syste
What is commercial vehicles?
A commercial vehicle is any type of motor vehicle used for
transporting goods or paying passengers. The European Union defines
a "commercial motor vehicle" as any motorized road vehicle, that by
its type of construction and equipment is designed for, and capable
of transporting, whether for payment or not:
(1) more than nine persons, including the driver;
(2) goods and "standard fuel tanks". This means the tanks
permanently fixed by the manufacturer to all motor vehicles of the
same type as the vehicle in question and whose permanent fitting
lets fuel be used directly, both for propulsion and, where
appropriate, to power a refrigeration system. Gas tanks fitted to
motor vehicles for the direct use of diesel as a fuel are
considered standard fuel tanks.
Paccar (DAF, Leyland, Foden) | Schmitz Cargobull | Tuna Stålrör |
Valx | Volvo Trucks (RVI, UD Trucks, Volvo) | WABCO | Beinben-Truck
| BPW | Brakes India Limited | Wuhan Youfin Auto Parts Co (Youfin)
| Yutong | ZF Friedrichshafen | DAF | Daimler AG (Daimler, EvoBus
Freightliner, Fuso, Mercedes-Benz) | Dana Holding Corporation | Ege
Fren | Haldex | Hendrickson | Inver Press | Kamaz | Knorr-Bremse |
Knott Group | Krone Group (gigant) | | Meritor
What is commercial vehicles brake ?
There are two types of brakes of commercial vehicles:
1) Drum Brakes
Drum brake is a brake that uses friction caused by a set of shoes
or pads that press outward against a rotating cylinder-shaped part
called a brake drum. Drum braking linings have brake drums that
rotate with the wheels.
Brake shoes fitted with brake linings (friction material) which
press against the drums from the inside to generate braking force
(decelerate and stop) are set inside of the drums.
With this system, friction is generated by pressing the brake
linings against the inside surfaces of the drums. This friction
converts kinetic energy into thermal energy. Drum rotation helps to
press the shoes and the lining against the drum with more force,
offering superior braking force in comparison with disc brakes. On
the other hand, it is very important to design the components so
that the heat from the thermal energy is dissipated efficiently
into the atmosphere.
There are three types of drum brakes depending on how the brake
shoes are pressed on to the drums; leading/trailing shoe type, twin
leading shoe type and duo-servo type.
WVA19487 Commercial Vehicles Brake Linings Parameters:
| Type | 19487 |
| Working life | 30,000-50,000 Km |
| Drum Diameter | 408 |
| Width | 180 |
| Thickness | 17/11.8 |
| Outer Length | 192 |
| Inner Length | 178 |
| Radius | 200 |
| Number of holes | 8 |
| Samples | available |
| Material | semi-metallic,non-asbestos |
2) Disc Brakes
Brake rotors of disc brakes rotate with the wheels, and brake pads,
which are fitted to the brake calipers, clamp on these rotors to
stop or decelerate the wheels. The brake pads pushing against the
rotors generate friction, which transforms kinetic energy into a
thermal energy.
This thermal energy generates heat, but since the main components
are exposed to the atmosphere, this heat can be diffused
efficiently. This heat-dissipating property reduces brake fade,
which is the phenomenon where braking performance is influenced by
the heat. Another advantage of disc brakes is its resistance to
water fade, which occurs when the water on the brakes significantly
reduces braking force. When the vehicle is in motion, the rotor
spins at high speeds and this rotational motion discharges the
water from the rotors themselves, resulting in stable braking
force.
