- Fully floating 2-piece rotor that allows outer ring to expand freely in response to heat. This reduces stress which in turn extends rotor life and reduces the tendency for rotor cracking during extreme use.
- Drive bobbins machined from a single piece of stainless steel giving maximum strength and corrosion resistance. Stainless bobbins reduce the requirement for regular disc maintenance and ensures the outer ring continues to float freely even when used on the public road with corrosive salts and other road grime.
- Each bobbin assembly features an anti-rattle spring clip ensuring silent operation when driving on the public highway
- Rotor rings feature 48 directional internal curved vanes for improved rotor coolin
- Friction rings are cast from high carbon G3500 alloy giving excellent wear properties and improved thermal capacity. All EBC disc rings are cast using the ‘centre split’ casting method, ensuring a balanced casting that will not distort under high heat, an issue common with cheaper ‘moulded out’ castings.
- Unique Swept Groove slot design for effective evacuation of braking dust and gasses whilst ensuring good initial ‘bite’ on brake apply
- Replacement disc rings for EBC floating rotors are significantly less expensive than our major competitors.
EBC Automotive Brake Tech – brake calipers
In this EBC Automotive Brake Tech we will be discussing brake calipers.
Brake calipers are a vital part of your brake system. The brake caliper is what brings the disc brake pad into contact against your brake rotor and generates the stopping power of the vehicle.
Seized calipers or seized sliding parts of the brake caliper will cause many problems including brake drag, brake overheat and hot spots on brake rotors, cracks in brake rotors and very commonly rotor ribbing or rotor galling which shows up as record style grooves or ribs on the rotor in a general pattern. See below:
Whilst fine ribbing of brake rotors is quite common and not in general a reason to replace the brake rotor the reason for the ribbing marks needs to be understood.
Whilst it is not within the ability of most mechanics to strip and refurbish a brake caliper, certain service work can be carried on by competent technicians or by your dealer. Do NOT please attempt to rebuild brake calipers as this is a SAFETY ISSUE if you are not totally qualified to do this. Our following notes guide people in the basics of making sure your caliper is working properly.
There are several types of automotive brake caliper.
Most cars use a single piston sliding caliper which has a single large piston, on the inboard side of the caliper into which the hydraulic fluid enters. Through a slider mechanism the opposing half of the caliper is pulled towards the piston clamping the brake pads on to the brake rotor. These sliding calipers as they are know are prone to seizure due to corrosion in two areas.
Rotor damaged by worn pads contacting rotor after pad suffered premature wear due to caliper pistons or caliper slider seizure.
Pads on one side of the vehicle badly worn, others look fine. Clear sign of a one side caliper seizure.
Slide Rails
It is most common in European cars that these slide rails become rusty and the free movement of pads cannot take place. On every brake pad change, clean these slide rails with a wire brush and apply a VERY THIN coating amount of high temperature grease on them, take care not to contact the brake pads with ANY greases or lubricant which can ruin the brake pads and can CAUSE TOTAL LOSS OF BRAKE in driving.
If the pads cannot slide freely on the slide rails because of this rust or scale, the outboard pad will not release staying in contact with the brake rotor after the brake is released , will cause overheating of the brake rotor, hot spots on the brake rotor, brake vibration and eventually brake pad surface scoring on that side of the brake pad and rotor . If your brake rotor looks like this in the picture below, it has to be turned or replaced and new pads fitted. The matching faces on the brake pad will show rib marks.
Again EBC Brakes wants to draw customer’s attention to the numerous advantages of slotted rotors or drilled and slotted rotors such as our GD series or USR series sport rotors which eliminate rotor ribbing, eliminate rotor scoring and rotor damage, help brake pads last longer and run cooler.
Thank you for reading this EBC Automotive Brake Tech article!
