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Brake Shoe Usage Precautions

Apr 03, 2025

Brake Shoe Usage Precautions

1.Pre Installation Inspection

Material matching:Ensure that the brake shoe material matches the brake disc/wheel hub(such as cast iron,synthetic materials,etc.).

Dimensional compliance:Check if the brake shoe size meets the vehicle model requirements to avoid brake failure caused by improper installation.

Surface condition:Confirm that the brake shoes are free of cracks,deformation,or severe wear,and that the new brake shoes are clean and free of oil stains.

2.Installation Requirements

Correct alignment:The contact surface between the brake shoe and the brake wheel/disc should be evenly adhered to avoid uneven wear.

Tightening torque:Fix bolts with standard torque to prevent loosening or detachment.

Gap adjustment:Ensure that the gap between the brake shoe and the brake surface meets technical specifications(such as railway vehicles typically requiring 1-3mm).

3.Operation&Maintenance

Attention during the running in period:New brake shoes need to be run in at low speed and light load(about 200-300 kilometers)to avoid hot cracks caused by sudden braking.

Temperature monitoring:During continuous braking,the temperature of the brake shoes should not exceed the material limit(such as synthetic brake shoes,which are usually≤250℃).

Foreign object cleaning:Regularly remove oil stains,metal shavings,etc.on the surface of the brake shoe to prevent a decrease in braking force or abnormal wear.

4.Replacement Criteria

Thickness wear:The remaining thickness is lower than the manufacturer's specifications(such as replacing railway brake shoes if they wear to 10mm).

Cracks/peeling:Replace immediately when there are penetrating cracks or large areas of material peeling.

Abnormal braking:If the braking distance is extended,there is abnormal noise or shaking,the brake shoe status should be checked.

5.Safety Warnings

Prohibition of mixing:The same axle brake shoe must be of the same material and batch to avoid uneven braking force.

Oil and water resistance:Avoid contaminating the friction surface with grease and water stains,which may cause brake failure.

Regular inspection:It is recommended to check the status of the brake shoes every 5000 kilometers or as required by the operation manual.


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