Auto

All about a roller brake tester for a MOT test

Maintenance of all vehicles is necessary at some point. Immediate attention is often required to check for wear. Sometimes it is periodic repair that is needed for the proper functioning of the car. It is very important to replace worn and damaged parts to avoid further damage to the car.

If you want your vehicle to run smoothly, you definitely need self test products with the latest technologies and services. There are a number of manufacturers of automatic testing products that meet the highest standards in terms of quality, durability, reliability, and safety. These are definitely the drivers of any successful auto industry, and they represent the basic characteristics that come to mind for any customer.

A very popular automatic test product that is used is the Roller Brake Tester, widely used to calculate braking efforts and vehicle efficiency. A roller brake tester consists of a chassis with a driven roller system. The other two brake testers are the manual deaccelerometers and the plate brake testers that have 2 parallel measuring plates.

A Roller Brake Tester (RBT) allows the dynamic evaluation of the braking system of a motor vehicle, under stationary and controlled conditions. Using RBT, the braking force for each wheel, the air pressure in the line and the wheel chamber, the imbalance in all axles, tests the emergency brakes and the parking brakes, in addition to comparing the braking force With air or hydraulic pressure, pedal pressure and braking force display is shown in due time. RBT also allows you to find ovalities and cracks in the drums, as well as deformations of the disc brakes.

This type of test is performed on a mechanical floor unit containing electric motors, brake force transducers, two independent sets of three measuring rollers along with additional safety sensors.

Proper brake testing helps the technician determine brake performance, in addition to effectively and efficiently locating potential faults in the braking system that often go unnoticed.

It is imperative to reduce the rolling resistance of the wheels. Approximately 40% of total fuel consumption is attributed to exceeding rolling resistance and is due to potential wear on components. It should be noted that the ideal rolling resistance should be 3 to 4% of the individual weight of the wheel.

Some of the common problems associated with rolling resistance include:

  • Brake pad dragging on drum / disc
  • Foreign matter skimming the wheel
  • Pressure valve leak
  • Inflated tires
  • Tight bearing

Organizations that primarily use roller brake testers include:

  • Manufacture of heavy vehicles in production lines
  • Manufacturers of heavy vehicles under investigation
  • Heavy vehicle repair shops
  • Heavy Vehicle Inspection Stations
  • Bus and coach companies
  • Mining companies
  • Airlines
  • Highway Police / Armed Forces

The roller brake test helps to display and measure the following values:

  • Crack pressure and threshold
  • Braking force on each wheel
  • Delay time / reaction time
  • Service line pressure Pm
  • Rolling resistance Px
  • Disc Ovality / Eccentricity
  • Cylinder pressure Px
  • Unbalance in%
  • Axle weight
  • Efficiency
  • Graphic presentation of the test results.

The benefit of testing roller brakes lies in presenting all key values ​​competitively.

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