How Brake Pads are Made

Summary

Highlights

• ChrisFix explores a brake pad factory to reveal the intricate process of creating brake pads from scratch. 🏭
• The video emphasizes the importance of using pickled and oiled steel to prevent rust. 🔧
• ChrisFix demonstrates the cutting-edge NRS press technology used to create the mechanical attachment for brake pads. 📏
• The thorough testing process includes a braking dyno, corrosion chamber, and shear test to ensure quality and durability. 🛠️
• The video concludes by installing the newly made brake pads on a vehicle, showcasing their improved performance. 🚗

Key Takeaways

• Brake pads are more complex than they seem, starting from quality pickled and oiled steel! 🏭
• Using mechanical attachment instead of glue enhances the strength and longevity of brake pads! 🔩
• Galvanizing protects brake pads from rust, crucial for long-lasting performance! 🛡️
• The fusion method of attaching friction material avoids glue and uses pressure, a modern innovation! 🚀
• Real-world testing ensures these brake pads can handle intense conditions, even making them catch fire! 🔥
• Seeing the meticulous manufacturing process gives a new appreciation for brake components! 🚙
• This innovative approach invites curiosity about the making of other car components too! 🔧

Overview

Chapters

• 00:00 - 00:30: Introduction to Video and Problem Statement The chapter opens with the host, ChrisFix, introducing the topic of brake replacement. Chris mentions that he has previously created multiple in-depth tutorials on replacing brakes, including front, rear, and drum brakes for different vehicle models. Instead of repeating this content, he announces an exciting new approach: taking the audience on a journey to a factory to demonstrate the process of manufacturing brake pads. This provides a fresh perspective and insightful content, promising a behind-the-scenes look at how brake pads are made.
• 00:30 - 01:00: Importance of Understanding Brake Pad Manufacturing The chapter discusses the value of understanding the manufacturing process of brake pads beyond just purchasing and installing them. It highlights the different stages of production, testing methods, and types of brake pads available. The speaker shares a practical issue faced with brake pads; even when there's substantial material left, rust can cause problems due to the friction that wears off protective paint in the brake caliper.
• 01:00 - 01:30: Rust Problem with Existing Brake Pads The chapter discusses the issue of rust on existing brake pads. It highlights that despite having adequate life left, the brake pads need replacement due to rust seizing them into the brake caliper, preventing movement. The narrative then transitions to exploring how brake pads are manufactured, noting that many are produced in China or India. The speaker plans a visit to a brake pad factory in Toronto, Canada, flying out from Newark, New Jersey, to witness brake pad production firsthand.
• 01:30 - 02:00: Travel to Brake Pad Factory in Toronto In this chapter, we delve into a visit to the NRS brakes factory in Toronto, known for providing technology to major car companies such as GM, Ford, Chrysler, Audi, and Bugatti, as well as aftermarket companies like Brembo. The chapter explores the complete process of brake pad manufacturing, starting from the engineering department. It's mentioned that, in the United States alone, there exist over 3,000 unique brake pad designs, exemplifying the vast scope of brake technology.
• 02:00 - 02:30: Visit to NRS Brakes Factory The chapter discusses the manufacturing process of brake pads, emphasizing the importance of strict tolerances to ensure proper fit and function within a vehicle's brake caliper. It starts with creating a 3D model of the truck's brake caliper to take precise measurements. These measurements are then used to create a die for stamping the brake pad backing plate, ensuring it fits correctly. The chapter also invites readers to check out the stamping process.
• 02:30 - 03:00: Engineering and Design of Brake Pads The chapter titled 'Engineering and Design of Brake Pads' discusses the process of creating the brake backing plate, an essential component of brake pads, at a stamping facility. At the facility, raw steel is utilized, with each coil weighing between three to five tons. These steel coils are crucial as they form the foundation of the brake pad. The factory specifically uses high-quality pickled and oiled steel to ensure the durability and performance of their brake pads. The narrative emphasizes the importance of this material in the manufacturing process.
• 03:00 - 03:30: Stamping Process of Brake Pad Backing Plate The process of creating brake pad backing plates involves forming them by heating and rolling steel into shape. Initially, the steel can be left untreated, which results in 'black steel' with a surface layer of scale and impurities. This untreated steel is less costly to produce than pickled and oiled steel, but it retains impurities and rust. The text implies a comparison of untreated vs. treated steel, though the brake pads have not yet been manufactured from this steel at this stage.
• 03:30 - 04:00: Difference Between Black Steel and Pickled and Oiled Steel The chapter "Difference Between Black Steel and Pickled and Oiled Steel" explains the pickling process, where hot rolled steel is cleaned with acid to remove scale, followed by oiling to prevent rusting. Although pickled and oiled steel is more expensive than black steel, it offers a cleaner, rust-free surface that is required by OEMs for making brake pads due to its higher quality.
• 04:00 - 04:30: Flattening and Stamping Process The chapter discusses the differences between pickled and oiled steel versus black steel in terms of corrosion, though a detailed comparison is postponed for later. The focus is on a manufacturer that exclusively uses pickled and oiled steel. It describes the process of bringing a four-ton steel coil to a press, involving coordination between a forklift operator and another worker to load the steel into a feeder.
• 04:30 - 05:00: Quality Control for Stamped Backing Plates The chapter discusses the process of quality control in the production of stamped backing plates for brake pads. Initially, steel, which is coiled and hence curved, needs to be flattened by passing it through a series of rollers. This is a crucial step before stamping to ensure the steel is completely flat. Once flattened, the steel is fed into a press that applies up to 800 tons of pressure to stamp out a single backing plate, ensuring precision and quality in the final product.
• 05:00 - 05:30: Mechanical Attachment Process The chapter discusses the mechanical attachment process of brake pad backing plates. It describes the immense pressure of 800 tons applied during stamping, which is equivalent to the weight of 400 passenger cars. The process involves the use of two buckets to efficiently handle the stamped plates. Once a bucket is full, it's closed off, and the process continues with the other bucket. Workers inspect the backing plates by cleaning them with compressed air for visual checks.
• 05:30 - 06:00: Galvanizing Process The chapter discusses a quality control process in the galvanizing process where trained personnel are responsible for inspecting the pressing of backing plates. If an issue is detected, immediate action is taken to prevent contamination of an entire batch. By knowing that only the top two buckets might contain improperly pressed backing plates, the inspection process efficiently prevents damaged plates from mixing with the good ones. This smart and simple inspection ensures that only quality backing plates are produced through the galvanizing process.
• 06:00 - 06:30: Methods of Adding Friction Material The chapter covers the process of how friction material is added and discusses the handling of excess material during the manufacturing process of backing plates. It explains that all the leftover steel from creating backing plates is collected as scrap metal to be recycled. This recycling of metal is not only cost-effective but also environmentally sustainable, as all unused metal is melted down and reused, ensuring no waste.
• 06:30 - 07:00: Fusion Process of Brake Pads The chapter titled 'Fusion Process of Brake Pads' describes the initial stage where a container is almost filled, indicating readiness to move to the next step. It details the process of taking a backing plate to the Quality Control lab for a full analysis to ensure it has no flaws and fits the caliper properly. The backing plate is handed over to a lab technician who uses a high-tech dimensional analysis scanner. This scanner uses lights and cameras to precisely measure the backing plate and check it against OEM specifications, specifically for a Mazda beat 3000 pickup truck.
• 07:00 - 07:30: Adding Brake Pad Shim The chapter 'Adding Brake Pad Shim' discusses quality assurance measures in brake pad production. It explains that tools and machines used in the process have visual indicators to show tolerances—red for fail, green for pass—to ensure quality control. Furthermore, every brake pad backing plate is stamped with a serial number for traceability to its original material source, allowing for exact tracking and verification of the specifications. Once these are confirmed, the process moves to the next production phase: mechanical attachment.
• 07:30 - 08:00: Testing in Research and Development Facility The chapter titled 'Testing in Research and Development Facility' provides a glimpse into the size and operations of a facility producing brake components. The narrator takes a ride on a forklift to illustrate the expansive 700,000 square foot space filled with orange bins containing backing plates for cars worldwide. The process of adding a mechanical attachment to the backing plates for brake pads, specifically for the narrator's truck, is highlighted as part of the facility's operations.
• 08:00 - 08:30: Brake Pad Dyno Testing In the 'Brake Pad Dyno Testing' chapter, the process of preparing brake pad backing plates is discussed. Initially, these plates are stamped and then processed through an NRS machine, a specialized press that operates in a unique fashion. For a detailed observation, the operation of the press was paused and cameras were set up inside. The process involves feeding the blank backing plate into the machine, where the press then scrapes its surface, preparing it for subsequent steps. This chapter emphasizes the precision involved in the initial stages of brake pad manufacturing.
• 08:30 - 09:00: Corrosion Chamber Test This chapter provides a detailed explanation of the technology behind brake pads used in vehicles, focusing on the role of rasps in the corrosion chamber test. It describes how rasps are used to secure brake pad material to the backing plate mechanically, eliminating the need for glue. The chapter explains the process of transforming a smooth backing plate into one with hundreds of rasps and details how these are collected and prepared for further processing.
• 09:00 - 09:30: Shear Test Results In this chapter titled 'Shear Test Results,' the process of preparing brake pad materials is followed. After completing the third step, the brake pad backing plates are transported to a separate factory for galvanizing. This involves hanging the plates on racks to coat them with a zinc layer, which serves as a sacrificial layer to prevent rusting. The chapter provides a detailed walk-through of how this galvanization process is carried out, highlighting its significance in protecting the backing plates.
• 09:30 - 10:00: Real-world Testing with Chevy Tahoe The chapter titled 'Real-world Testing with Chevy Tahoe' covers the galvanization process of backing plates. It explains the seven main steps in the process, starting with dipping the plates into a heated water and sodium hydroxide bath to remove grease. This is followed by a rinse in plain water, a pickling bath with acids for cleaning rust and scale, and another water rinse to remove the acid. The chapter is focused on detailing these steps in the manufacturing process.
• 10:00 - 10:30: Recap of Manufacturing Process The chapter provides a detailed explanation of the zinc coating process on backing plates. Initially, the plates are submerged in an aqueous solution where an electrical current facilitates the bonding of zinc ions to the plates, forming a thin, even layer that offers rust resistance. Following this, the plates undergo a post-treatment sealer to enhance corrosion resistance before receiving a final rinse in plain water. Once dried, the zinc-coated backing plates are ready for subsequent processes.
• 10:30 - 11:00: Installation of New Brake Pads The chapter discusses the process of installing new brake pads, specifically focusing on the methods of adding friction material to the backing plates at a brake pad factory. The narrative highlights that, although the factory in question does not utilize the method of gluing friction material, it is a prevalent technique among brake pad manufacturers. The process begins with zinc-coated backing plates, which are then transformed into functional brake pads as friction material is applied.
• 11:00 - 11:30: Conclusion and Thanks to NRS Brakes In this concluding chapter, the focus is on two primary methods used in the manufacturing of brake pads. The first method involves gluing the friction material onto a flat, bare piece of metal, using heat and pressure. However, since the metal isn't galvanized and thus not protected against rust, it is painted to prevent corrosion. This approach is common in many aftermarket pads, including those in the narrator's truck.
• 11:30 - 12:00: Call to Action and Future Video Ideas The chapter provides an overview of the latest technology in the brake pad industry, specifically the fusion process. It starts with a description of different attachment methods and then introduces the fusion machine. The process involves placing the friction material into a holder, followed by positioning the backing plate with its mechanical attachment facing down into the friction material, emphasizing the innovation and efficiency of the fusion technology.

How Brake Pads are Made Transcription

• 00:00 - 00:30 Hey guys ChrisFix here and today I need to replace the brakes on my truck but instead of showing you how to replace brakes because i've done that multiple times with In-depth how-to videos how to replace front brakes rear brakes drum brakes and on different makes and models So instead of doing another how-to video on how to replace brake pads We're gonna be doing something way cool. Today i'm gonna show you how brake pads are made That's right. We're gonna go to the factory and we're literally going to make brake pads for my truck
• 00:30 - 01:00 It's one thing to go to the store and buy brake pads and install them. That's awesome But it's a completely different thing to learn how these are made The process that goes into it the testing and the different types of brake pads So the issue I'm having you can see there's plenty of meat left on these brake pads There's about half the life left on here But the problem I'm having is you see all this rust in here and all this rust in here because the brake pads slide back And forth in the brake caliper this part where it's painted well the paint gets rubbed away and
• 01:00 - 01:30 Shows bare metal and that bare metal will rust and this right now is getting seized into this brake caliper and the brake isn't budging So although we have plenty of life left on our pads. We still have to replace them because they're getting rusted So let's head out to the brake pad Factory and let me show you how brake pads are made So while many brake pads today are made in China or India. I'm grabbing a flight from Newark, New Jersey and Heading to Toronto Canada and here in Toronto
• 01:30 - 02:00 We're visiting new cap the makers of NRS brakes and their brake technology is used in om brake pads for big car companies like GM Ford Chrysler outtie and even Bugatti And aftermarket companies like Brembo. So this is the real deal. We're about to see from start to finish how brake pads are made It all starts right here in their engineering Department in the United States alone. There are over 3,000 brake pad designs like this one This is actually the one that fits in the caliper of my truck, which is this right here
• 02:00 - 02:30 Each brake pad has to be manufactured to strict tolerances Because when you install brake pads in your car, they have to fit nice and tight But still have room to move in the caliper, so it doesn't get stuck and to make sure each brake pad fits correctly It all starts right here on the computer. This is the 3d model of my trucks brake caliper And since we're making brake pads for the truck All the precise measurements are going to be taken from this model and are going to be used to create the die Which is going to stamp the brake pad backing plate, so it'll fit properly. So let's go and check out the stamping process
• 02:30 - 03:00 So we need a head over to the stamping facility for step two where we're gonna take raw steel and stamp the brake backing plate And there is no shortage of steel on this factory each one of these coils weighs between three and five tons And there are stacks of them to the ceiling Look at all this deal and this steel is super important because it's gonna be turned into the backing plate Which is the foundation of the brake pad so high-quality Pickled and oiled steel is all this factory uses to make their brake pads Let me show you why so all of these steel coils that you see in front of us are hot rolled
• 03:00 - 03:30 That means they're formed by heating them up and then rolling them out into shape after the steel is hot rolled There are two things that could be done first. They could leave the steel as is and a scale a rust forms on top That's called black steel this steel isn't treated so that black that you see on here is all scale and impurities the Positives of this are it's less expensive to produce than pickled an oiled steel But the negatives are you have those impurities you have this scale you have this rust on here And we didn't even make these into brake pads yet and on the other hand
• 03:30 - 04:00 We have pickled an oiled steel. The process of pickling steel is right after it's hot rolled it's cleaned off with an Acid so that you don't get that scale that you see with the black steel and then oiling it you could see there's a sheen On here all they do is add oil so that it prevents it from rusting in the future Now the negatives with pickled and oiled steel is it costs more than black steel? But the positives are you're starting off with a cleaner rust and scale-free metal Also, this is what the OEM requires brake pads be made of So if you're making an OE brake pad you need to use pickled and oiled steel because it's a higher quality steel now
• 04:00 - 04:30 I'll show you the difference between pickled and oiled and black steel in the corrosion chamber a little bit later in the video but for now know that this manufacturer only uses pickled and oiled steel now that you know the significance of using pickled and oiled steel Let's get our four ton steel coil and bring it to the press at the back of the press The forklift operator has to put the coil into the loading bracket that another worker Releases steel which rolls into the feeder and now the worker could feed the steel into the press
• 04:30 - 05:00 But since the steel was coiled up, it's curved and bent and bent steel can't be stamped So first the steel has to travel through a series of rollers to be flattened out So the brake pad backing plate could be stamped properly. Here's a closer. Look at what's happening? The steel moves along the rollers which are positioned to make that steel flat Then that flat steel comes out and gets fed directly into the press which has one last set of rollers to ensure. It's completely flat Once that flattened steel makes it into the press the press applies up to 800 tons of pressure to stamp out a single backing plate
• 05:00 - 05:30 800 tons is like having the weight of 400 passenger cars stacked on top of each other pressing down on that single piece of steel. That's a lot of pressure So after the brake pad backing plate gets stamped it slides down into one of two Buckets and not into the main orange bin this two bucket design is so smart And here's why they do it Once one of the buckets gets full the worker closes the gate to that bucket and then the other bucket starts filling up he perceived By grabbing a backing plate and blowing it off with some compressed air so we could visually inspect it
• 05:30 - 06:00 He's trained to look for anything that indicates the backing plate isn't being pressed correctly If he sees an issue He could shut the press and instead of contaminating the entire orange bin of backing plates where there could be Thousands of them already made he knows only the top two buckets have potentially bad backing plates So this simple inspection prevents damaged backing plates from getting mixed in with the entire batch, which is very smart All right. So check this out. We went from a coil of steel to this a freshly stamped backing plate
• 06:00 - 06:30 So at this point the backing plate is the correct shape and has all the holes and studs it needs But what happens to the rest of the steel that isn't used in the backing plate on the side of the press all the extra? steel that isn't part of the backing plate is also captured and Recycled what you see here is scrap metal that comes from the area around the backing plate and this over here is the scrap metal From cutting all the holes in the backing way Nothing goes to waste here That's good for both money savings and for being environmentally friendly all this metal will be melted down and reuse
• 06:30 - 07:00 Alright, and as you can see this containers almost filled as this finishes up now we can move on to the next step so let's grab a backing plate and Bring it to the Quality Control lab where the backing plate undergoes a full Analysis to make sure each one has no flaws and will properly fit the caliper So here's one of our backing plates and I'm gonna hand it over to the lab technician who's gonna place it on this high-tech scanner The dimensional analysis scanner uses lights and cameras to precisely measure every part of the backing plate It compares these measurements to OEM specifications in this case for my Mazda beat 3000 pickup truck if it isn't within the acceptable
• 07:00 - 07:30 Tolerances that'll come up on the screen as red and if it's good, it'll be green just like that. Perfect Alright, and that is a pass now Every single brake pad backing plate has a serial number stamped into it for complete traceability This could be tracked back to the original pickled and oil steel that it came from So now we know all of our backing plates are stamped to the correct specifications And since this container is full we could take it to the next step at the mechanical attachment
• 07:30 - 08:00 Facility and just so you get an idea the size of this facility Let's go for a quick ride on the forklift This company has a total of seven hundred thousand square feet of floor space and all those orange bins that you see that are stacked Up. Those are all filled to the top with backing plates for almost every car produced in the world And here we are making brake pads specifically for my truck. How crazy is that? So now the forklift driver is bringing the backing plates to the next step which is adding the mechanical attachment to the backing plate
• 08:00 - 08:30 So we have the backing plates that we just stamped and these are going into the NRS machine. This machine is also oppressed But it works a bit different than what we just saw So the worker places a bunch of backing plates into the hopper which feeds the press to get you guys the best view they stop The press for me and I literally went inside the press to set up cameras So you could see what happens to the backing plate check this out The blank backing plate is fed into the press and then the press pushes down to scrape the surface of the backing plate to create
• 08:30 - 09:00 hundreds of sharp rasps that at work Here's an up-close. Look of what these rasps look like These are an important technology that allows the brake pad material to stick to the backing plate without using glue Now after the brake pads get that mechanical attachment scraped into them They get transported via conveyor belt and get collected into another orange bin so we go from this smooth backing plate to a backing plate with hundreds of rasps on the other side that are gonna hold that
• 09:00 - 09:30 brake pad material on so with that we are done with our third step and now the forklift operator could take the bin filled with the backing plates and bring it to the loading dock because the next thing we Need to do is galvanize these backing plates and to do that. We have to bring them to a separate but nearby Factory So after a short trip We're at the galvanizing factory where our backing plates are hung on these racks so they could be coated with zinc This process is gonna put a sacrificial layer to prevent the backing plate from rusting. So, let's see how it's done
• 09:30 - 10:00 There are seven main steps for galvanizing backing plates first The rack of backing plates is dipped into a heated water and sodium hydroxide bath Which removes grease from the surface of the backing plates? Next it comes out of that bath and gets dunked into plain water to rinse off the backing plates Then it goes into a pickling bath where acids clean any surface rust and scale off the backing plates then the rack gets submerged into water again to insure the acid is rinsed off and now the
• 10:00 - 10:30 Backing plates are placed in an aqueous solution and an electrical current is run through them So the zinc ions attach to the backing plates Now the zinc is bonded to the surface of the backing plate and a thin even layer to provide rust resistance then the rack goes into a post treatment sealer which improves corrosion resistance and finally the last step is to do one last rinse in plain water and Pull it out to let it dry After it dries all the backing plates are officially zinc coated and therefore rust resistant and ready for the next step
• 10:30 - 11:00 So let's head back to the brake pad Factory and back at the brake pad factory Our freshly zinc coated backing plates are about to look like a brake pad Because the next thing we're gonna do is add the brake pad material now There are three main ways to add friction material to a backing plate and the first method which this factory doesn't do But I wanted to cover is gluing the friction material This is actually really common for brake pad manufacturers to do they get a bare piece of metal because you can't have galvanization
• 11:00 - 11:30 Because the glue won't stick to it. You also don't have that mechanical attachment You have a nice flat bare piece of metal and they use heat and pressure to glue the friction material Onto the pad now since it's not galvanized it can't be protected by rust So what they do is they paint it so you get a painted pad like this now This is what my truck was using and this is common on many aftermarket pads now The second method is molding the friction material. This Factory does do that And what they do is they get a mold they put the backing plate in there They pour the friction material in and then they use heat and pressure to cure that friction material
• 11:30 - 12:00 Against the rasps against the backing plate so that mechanical attachment Holds it in and then for the third method this is called the fusion process It's the newest technology in the brake pad industry, and we're about to get a sneak peek So let's go check it out What you're looking at is the fusion machine and here's how it works First the worker places the friction material into the holder followed by the backing plate with a mechanical attachment facing down into the friction material
• 12:00 - 12:30 next the fusion machine rotates and brings the backing plate and friction material to the press the press pushes down with 1200 psi of pressure to join the friction material and backing plate as one solid piece There is no heat used here Instead the sharp mechanical attachment on the backing plate is pushed into the friction material and then it's slightly bends poking into the friction So it can't come off finally the machine spins again and a vacuum picks up the brake pads and places it on a conveyor belt To be brought to a worker who will package the brake pads
• 12:30 - 13:00 this is a much cleaner and more efficient method than gluing the friction material or even molding the friction material and There we go. Our friction material is on our backing plate But there's one more step we need to do and that is make the brake pad shim which starts out as this rubber-coated coil of steel which is Straightened out and makes its way to the press the press then stamps out the brake pad shim and these shims are used to isolate The brake head from the caliper to keep the vibrations and no down so let me show you one of these up close all it is is a thin rubber coated piece of metal that goes on the
• 13:00 - 13:30 Backing plate. That's all you need to make the brakes a little bit quieter now while it's simple it's important So let's get it on the back of our brake pad And all you have to do is snap it on good now we've officially made our own brake pads from start to finish so let's package them up getting all four brake pads in here as well as the stainless steel brake hardware and the piston cushions and Now, let's fold the box up and close it, but we aren't done yet the last step in the brake
• 13:30 - 14:00 Manufacturing process is done here at the research and development and testing facility where they have a brake dynamometer They have a shear test machine. They have a saltwater corrosion chamber So what we're gonna be doing is we're gonna be testing the brake pads that we made and as a little comparison We have some painted brake pads just to see the difference. So let's go get these on the dyno This is the brake pad. Dyno So I'm gonna hand over the brake pads that we just made to the lab technician and he's gonna install them in the caliper then The doors are closed for safety because we're about to torture test these brake pads
• 14:00 - 14:30 To make sure they could hold up to the harshest conditions So with a hit of a button the dyno starts up and spins the brake rotor to highway speeds and then we're gonna do multiple Panic stops like if there was an accident in front of you and you had to slam on your brakes to come to a complete stop The only difference is we're gonna do this over and over until the brake rotor is brought up to 600 degrees Celsius Which makes it glow red? Hi, this is pushing the pads to the extreme limits So extreme chances are you'll never see this on the road and we're gonna be doing this for both the galvanized end Tainted peg
• 14:30 - 15:00 Which will get ready for the next test the corrosion chamber test So here's the painted brake pad and the galvanized brake pad after the dyno The idea is to give them some wear and tear so we could test them in the corrosion chamber This is the corrosion chamber which uses salty humid air to simulate about two months of winter driving So the lab technician is gonna put both the galvanized pad and the painted pad in the corrosion chamber so we could see the difference So with the lid closed the salty humid air is being circulated and we have to wait about a day for the tests to complete
• 15:00 - 15:30 And a day later, we are ready to see the results. So let's remove the pads from the corrosion chamber and check this out Right away, you can see the painted pad has rust on it and the paint is peeling off the backing plate And remember this is after a simulated two months on a winter road And then with the galvanized pad the zinc does its job it provides a sacrificial layer and protects the steel and prevents it from rusting So it's pretty cool to see how the galvanization prevents the steel from rusting. Now, let's take these two pads to the shear test machine
• 15:30 - 16:00 This right here is the shear test machine and let me show you what it does So this black metal piece is gonna push on the side of the brake pad and measure the force it takes to break that friction material off now we're gonna load the brake pad into the holder add the top plate over the pad and Lower the top arm to hold it in place. Now. The gauge is on the right are reading the force it takes to break the brake pad material off and the top is the mechanically attached pad and the bottom is the glued pad so
• 16:00 - 16:30 Let's start the test right now. The force is increasing until the brake pad fails And you can see the glue pad just failed and the mechanically attached pad is still going and there you go. Finally it failed So it took more than double the force to break it so with the painted pad the glued friction material popped right off and with the galvanized pad you can see the hooks held on to The friction material and what's really cool? This is the brake pad that we made and while it's awesome to see lab results Let's go out into the real world and test this out and instead of driving some fancy sports car
• 16:30 - 17:00 This is gonna be my test vehicle. It's a Chevy Tahoe It weighs over 5,000 pounds a nice heavy vehicle something that regular people drive and it's really gonna put these brakes to the test So let's go get these installed so we're gonna install the galvanized brake pads in the of this SUV just like that and then we could install the brake caliper and Finally tighten down both bolts. So they're snug and we're ready to go. Now. We're gonna torture test the brakes by doing repetitive hard stops
• 17:00 - 17:30 So I need to floor it and then head down the track wide open throttle Until I hear a beat, which means I hit 60 miles an hour Now I'm hard on the brakes until we come to a complete stop and I'll be doing this over and over and over and finally after fifteen panic stops the brake pads caught fire and the temperature of the brakes were just under 600 degrees Celsius or about 1,100 degrees Fahrenheit, so we really put these brakes to the test today and we got to experience that firsthand
• 17:30 - 18:00 So there we go. How cool is this? We start out with a coil of pickled and oiled steel then we stamp that to make a backing plate We added a mechanical attachment using the NRS Press then. We galvanize it to prevent rust then we added our semi metallic friction material We add a shim to prevent brake noise And finally, we have our completed brake pad and that's everything on how brake pads are made from start to finish So now there's one more thing we need to do and that is fly home
• 18:00 - 18:30 To good old New Jersey and install our brand new brake pads so out with the old rusty brake pads that are stuck in here and look at how rusty these are then we could remove the caliper to give us access to remove the old rotor as well now in with the new rotor torque down the caliper to spec and Now we're ready to install the brake pads So let's get the new stainless steel hardware Installed into the caliper and these just snap into place and allow the brake pads to move freely along a smooth clean surface
• 18:30 - 19:00 Good now we'll add some anti-seize onto the brake caliper pistons and let's install the included Piston cushions and these are something new to the market and they help prevent the brakes from making noise due to rubbing against the bare Metal caliper Pistons, you just need to push them into the piston and that's all there is to it. All right so with our piston cushions in and our brake hardware in there's one last thing we need to do and that Is install the brake pads that we made I like to add a very thin coat
• 19:00 - 19:30 A nice ease to the back of the caliper and to the brake hardware and this helps prevent brake noise and keeps the pads moving Freely, now we can add the pads and it goes right into place just like that and notice how easy these go in that's why it's important brake pads are built to tight tolerances and Oh a speck then we could close up the caliper and Finally, we could tighten down the caliper bolt and we are done. So There we go out with the old rusty seized up brake pads and in with the nice brand new ones and the best part is
• 19:30 - 20:00 We learned how they are made from start to finish This was easily one of my most favorite videos to make ever What an experience and how cool is it to actually see how brake pads are made? It's one thing to install them in your car It's another thing to learn what goes in to making brake pads now I do want to thank NRS breaks for supporting the video and making this possible you guys didn't see what went on behind the scenes but they shut down part of their factory so I could go and film and Show you guys each step of making brake pads
• 20:00 - 20:30 Not only that we got to see things that not many people get to see I got to get it on camera and share it With millions of people so we can learn how brake pads are made. And again, thank you very much I'm gonna link their brake pads in the description so that if you guys need brake pads You saw what goes into them you saw the quality, you could find them down in the description I think it's pretty cool to run brake pads that you actually know how they're made speaking of how it's made This is my first time making a video like this Normally, I do how to replace brake pads or how to replace a wheel bearing not how it's made
• 20:30 - 21:00 let me know in the comments what you guys thought is this something that you want to see me continue doing we can make a little series out of it Hopefully other brands reach out and we could see how I don't know wheel bearings are made or tires are made Comment some ideas down below if you like this and as always if you enjoyed the video remember to give it a thumbs up also If you're not a subscriber consider hitting that subscribe button for more videos just like this and finally again I'm gonna link this brand brake pads in the description go check them out I'll also link a video on how to replace brake pads from start to finish that goes in-depth so
• 21:00 - 21:30 You know exactly how to do it yourself