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Hydraulic Brakes
Hydraulic brakes are assemblies
that comprise of elements required for slowing or stopping of shafts
in equipment drives using hydraulic power to activate the
brake. Correct operating specifications are significant while
deciding upon the hydraulic brakes. Optimum torque rating, power,
speed and maximum pressure are guiding factors in a hydraulic brake.In a hydraulic brake, a brake pedal moves a piston in the master cylinder and then the brake fluid applies great force to brake pads. The hydraulic brake system used in the automobile is a multiple piston system that allows forces to be transmitted to two or more pistons. The hydraulically released, spring applied safety brakes may have low inertia design that provides unequaled stopping performance and single stroking rate.
Braking system's operation depends on the integrity of the hydraulic system. The master cylinder should have the capacity to generate several hundred pounds per square inch of pressure and the rest of the system must maintain the pressure without any leakage.
The hydraulic brakes come in various brake engagement choices that include:
- Friction- It is a very commonly found brake where the friction between contact surfaces transmits power.
- Toothed- In this beake, the toothed contact surfaces transmit power without slipping or heat generation.
- Non-contact- In a non-contact configuration, a non-contact technology such as a magnetic field, eddy currents etc. provide the braking action.
Some other common types of brakes are:
Band - Band brakes are of simple brake configuration and have a metal band lined with heat and wear resistant friction material.Drum - Drum brakes operate by shoes pressing against a spinning surface(drum). These are commonly used on automobile rear wheels.
Disc - Disc brakes have good heat dissipation properties and comprise of brake pads, a caliper and a rotor.
Cone - These are constructed of a cup and a cone lined with a heat and wear resistant friction material. The cone brakes are not widely used.
The hydraulic brakes may be zero backlash and washdown capable. The shaft configurations for hydraulic brakes can be inline, parallel and right angle and the mounting choices may be shaft or flange.
