Crane Customized

1

Crane Hydraulic Brake VS Electromagnetic Safety Brake

Safety braking is mainly used for middle and large crane, hoisting mechanism of port cargo handling machinery, mine hoist, winch, belt conveyor, and cable cars etc.. Especially the safety brake for casting crane and low-speed-shaft on other mechanism. When the working brake is failed or drive shaft, gear and other parts of drive system is failed, it can be used as emergency safety braking.

The crane safety brake mainly includes hydraulic type and electromagnetic 2 types. Their main comparative data are shown in the following table.

Index

Hydraulic brake SBD100

Electromagnetic safety brake AP75/30

Braking principle

Oil pressure release is provided by hydraulic station, and friction braking is applied by spring

When no accident occurs to the lifting object, the brake only slightly clamps the brake disc. When an accident occurs, driven by the clamping friction, the two wedge-shaped sliding blocks enter the dovetail groove by the inertial self-locking brake to clamp the brake disc.

Brake opening power source

Hydraulic station

Electromagnetism

Installation and commissioning

Complex installation, including oil pipe, oil valve, etc

Simple installation

Weight

Dead weight 230kg

Dead weight 50kg

Energy consumption

1500w

10w

Braking force

73Kn

75Kn

Maintain

There is oil leakage and regular maintenance is required

No hidden danger of oil leakage, no maintenance of oil pipe and hydraulic station

Security

Commonly

High

Applicable temperature

There are restrictions on temperature and obstacles to ultra-low temperature operation

Can be used at ultra-low temperature

Volume

With hydraulic station, it is large and takes up space

Compact size, not occupying space

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