ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY
Car disc brake. This device is found inside a car wheel. The metal disc surrounds the hub of the wheel. The main part of the wheel and the outer tyre have been removed. The brake pads (lower left) fit either side of the disc and are forced together to slow and stop the disc and wheel by applying friction. This is done using mechanical, pneumatic or hydraulic forces. The suspension (the spring) for the wheel is seen at top. This disc brake is from a Land Rover, a British-manufactured all- terrain vehicle.
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