Brake Lathes: Change Your Mindset To Maximize Brake Service

Brake Lathes: Change Your Mindset To Maximize Brake Service
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You may believe that machining rotors is unprofitable when compared to installing new rotors, but the opposite is dependable. tug in a patronize does not take up armory and does not have to be delivered by a parts store. You precisely have to make machining a line item on the compensate order, rather of giving it away with every brake job .
You may besides think that installing new rotors eliminates the possibility of a rejoinder. however, this myth creates more comebacks than it prevents. These comebacks frequently start with blaming the new pads and end with the customer having to return a second base or third meter until person pulls out a dial indicator and micron. ad therefore, installing new rotors is not a way to avoid having to use a micrometer or dial indicator. For every brake job, you should always measure for runout ( on the rotor and flange ) and the dimensions of the rotor before brake serve is performed .
After the rotor is resurfaced or a newfangled rotor is installed, it should be measured for runout when it ’ s installed on the vehicle as a quality-control method acting. A modern rotor could have excessive runout when it is installed on the vehicle due to a stack of tolerances .
It has often been said that you should never machine new rotors. But, what if the runout exceeds the manufacturer ’ sulfur specifications when the new rotor is installed on the vehicle ? This is when it ’ s permissible to machine a newfangled rotor with an on-the-car brake lathe. This helps to match the rotors to the hub flange. ad
For far besides long, brake lathes ( both terrace and on-the-car ) were pushed to the back of the workshop .
This can kill productivity. Granted, a bracken lathe can be a noisy and dirty piece of equipment if it ’ s not operated properly. But, when the technical school has to walk halfway across the workshop a few times, it becomes a productiveness cause of death. so, position your brake lathe where you perform the most brake work .

not having the right adapters and accessories can besides be a productiveness killer whale. Having to set up a lathe multiple times for the same rotor, or cutting runout into a rotor due to a mounting mistake can be very frustrating. Having the correct adapters and accessories can speed frame-up and prevent mistakes. besides, the rotor should be removed to measure runout in the wheel ’ s flange.

ad even if you are using an on-the-car bracken lathe, you should constantly remove the rotor before turning it. Removing the rotor may seem like you are offsetting the time-savings advantage of an on-the-car lathe, but it is a critical footstep that can help accentuate this type of lathe ’ second main advantage – reducing runout and thickness magnetic declination .

You may think that you are not paid to measure thickness and runout, but are you paid for a comeback ? As mentioned earlier, even if you install a new rotor, you are setting yourself up for a rejoinder if you do not measure using a micrometer or dial indicator. even a “ perfect ” rotor will have runout if it is put on a flange that has runout or corrosion. ad
Cutting a rotor in one pass is essential for productiveness. For noncomposite rotors, it ’ s potential to take a a lot as 0.020 ” per side while however having an acceptable finish. however, with a composite rotor or one with hard spots, the depth should be reduced, likely below 0.010 ” per side, for a quality polish. In arrange to remove this much material, it is essential to have sharp bits .
In order to cut a rotor fast, you must go slowly with the crossfeed .
however, cutting besides fast will reduce the cut quality and possibly create chatter. A larger diameter rotor will need to turn slower than a small-diameter one. Single-speed lathes are set at the slower speed of the largest application they are designed to cut. This is normally around 0.002 ” per revolution. ad Regarding the focal ratio of the arbor, rules are the lapp as the crossfeed – the bigger the part, the slower the tip. Again, single-pass lathes are set to the slowest accelerate, typically around 100 revolutions per minute.

Being able to measure and machine rotors efficiently is critical for any shop performing brake service. If you don ’ metric ton think you can do it the mighty way, it ’ south meter to invest in equipment and train, or get out of the brake business .

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Category : Car Brakes