Brown Transmission & Bearing Co. is a Machinery Manufacturing, Automotive Service & Collision Repair, and Consumer Services company located in Lancaster, ...

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We use our special synthetic and American ACER Racing SIN oil lubrication in our ceramic skate bearings which has an extremely wide service temperature range of from -50 to +120 degrees Celsius with an incredible speed factor of 1 million. We also offer these with our synthetic American ACERGoo grease.

A: Common causes include poor maintenance, water and dirt contamination, extreme driving conditions, and manufacturing defects.

Cyclists with the need for speed and bike manufacturers alike have grown to trust ACER Racing for making products that bring out the best in their bicycles. Our 6806 ceramic bearing can help bike racers and enthusiasts alike obtain the highest level of performance thanks to our skillful and innovative design and because the right kind of ceramic bearing brings major benefits in terms of durability, friction and heat resistance, as well as a tremendous decrease in rotational mass meaning less pedal effort in each pedal as a result of less friction and less rolling resistance resulting in more pedal power hitting the road.

Team Associated racers, this is a direct replacement for Associated 1731 which is a front one way bearing. You can use these as a performance upgrade to the AE 1731 just reuse the sleeve that comes on the factory team one way bearing. (Associated incorrectly has the 1731 bearings listed as a 3/8x5/16 bearing there is no such thing. Check out this link on RCTech for more information http://www.rctech.net/forum/electric-road/49177-team-associated-tc4-594.html).

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We want to take the stress out of getting your vehicle serviced. We’ll never talk down to you or pressure you, but we will be completely thorough honest about what your car does need - specifically noting anything that could be a safety issue.

Our 6902 Ceramic Ball Bearing, also known as a 61902 size Ceramic Ball Bearing, is ABEC 7 and engineered for super high performance perfect for wheel hubs or anywhere a high performance 6902 bearing is needed. These size 6902 high performance ball bearings are from World Champion ACER Racing’s Ceramic Nitride Pro Series collection. They include diamond polished Grade 5 Silicon Nitride balls, which are the hardest ceramic balls on the planet (even harder than the white ceramics), dual removable no contact seals so they are completely serviceable, a high speed low noise low friction nylon cage, and 100% synthetic American lubrication. Lighter, faster: the ACER Racing way since 1989. Inner diameter is 15mm, outer diameter is 28mm and width is 7mm.

UPDATE: World Champion speed skater Peter Doucet sets new lap time .3 seconds faster than before with ACER SK8 Ceramic Skate Bearings. This is very significant considering the laps are only 10 seconds each. Congratulations Peter! (Bearing seal removed for photo only - bearings come sealed on both sides. 8x22mm bearing)

When wheel bearings wear out, they can have a significant impact on vehicle performance, leading to increased friction and resistance within the wheel assembly. This extra friction forces the engine to work harder to maintain the same speed, resulting in decreased fuel efficiency. Additionally, worn bearings can cause uneven tire wear, as the compromised alignment and stability of the wheels lead to irregular contact with the road surface. Hitting a pothole or other road hazard can exacerbate bearing damage, potentially causing sudden bearing failure and loss of vehicle control. The deterioration of wheel bearings also affects the proper transfer of torque from the engine to the wheels, further compromising handling and increasing braking distance.

A: While possible, replacing a wheel bearing requires specific tools and expertise. It’s recommended to seek professional help for accurate installation.

Our 608 ceramic silicon nitride skateboard ball bearings are engineered to provide high-performance and durability for skateboard applications. These bearings are designed to fit skateboard wheels and deliver smooth and efficient rotation, contributing to the overall performance of the skateboard.

One of the key advantages of the MR115 ceramic ball bearing is its construction material. The balls are made from ceramic, specifically silicon nitride. Ceramic bearings offer several advantages over traditional steel bearings. They have superior hardness, low density, and excellent corrosion resistance, making them ideal for demanding applications.

When you bring your family’s car to Wiygul Automotive Clinic, we take your trust in us seriously. We take the time to get to know you and your vehicle. In addition, we will send you service reminders and maintain service records that help keep your car’s factory warranty valid - which means you don’t have to go to the dealer for service.

Our MR115 ceramic ball bearing is a high-performance miniature component known for its compact size, reduced friction, wear resistance, temperature stability, and non-magnetic properties. Its ceramic construction offers superior hardness, low density, and excellent corrosion resistance, making it suitable for a wide range of applications. Whether used in precision instruments, RC car applications, robotics, or other high-performance systems, the MR115 ceramic ball bearing continues to deliver reliability, efficiency, and durability.

The "6803" designation refers to the bearing's specific size and dimensions. It has an inner diameter of 17 millimeters, an outer diameter of 26 millimeters, and a width of 5 millimeters. These dimensions are tailored to meet the requirements of bicycle hubs, bottom brackets, and other cycling components.

Furthermore, the 688 ceramic bearing excels in reducing friction and increasing stiffness, resulting in improved efficiency and precision in mechanical systems. The low friction characteristic contributes to reduced energy consumption and enhanced operational efficiency. Moreover, the high stiffness property ensures minimal deformation, thereby enhancing system accuracy and responsiveness.

May 5, 2008 — The noise is the rotor rubbing the backing plate, and the cause is excessive play in the wheel bearing. Sounds like you are on the right track!

Full Ceramic 608 Bearing size 8mm inner x 22mm outer x 7mm thickness (8x22x7mm bearing). Features pure Silicon Nitride outer and inner races as well as full silicon nitride diamond polished balls. ABEC 7.

The ceramic construction of the 688 bearing offers numerous advantages. First and foremost, it provides the bearing with superior thermal stability, allowing it to withstand high temperatures without compromising its functionality. This makes it suitable for applications involving high-speed rotation or extreme temperature variations.

We integrate our HSR inner ball bearing cage for durability and strength with superior heat resistance at high RPMs. This insures that your ceramic skate bearings will spin faster, longer.

One of the key benefits of size 608 ceramic silicon nitride skateboard ball bearings is their reduced friction coefficient. Ceramic balls have a smoother and harder surface compared to steel balls, resulting in lower friction during rotation. This leads to improved efficiency, reduced rolling resistance, and enhanced speed for skateboarders.

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Our 608 ceramic silicon nitride skateboard ball bearings offer superior performance and durability for skateboard applications. These bearings provide reduced friction, increased speed, enhanced durability, and corrosion resistance. Skateboarders can enjoy smoother rides, improved performance, and longer-lasting bearings, making size 608 ceramic silicon nitride bearings a popular choice among skateboard enthusiasts.

Additionally, the ceramic bearing offers excellent resistance to moisture, dirt, and corrosion. This is particularly beneficial for cyclists who ride in wet or muddy conditions, as the bearing can withstand these elements without compromising its performance.

Moreover, ceramic silicon nitride bearings are known for their exceptional durability and wear resistance. They can withstand high loads, impacts, and the repetitive stresses of skateboarding without premature wear or damage. The increased durability of these bearings translates into extended service life and reduced maintenance requirements, allowing skateboarders to enjoy a smoother and more consistent ride.

Our MR115 bearing has an inner diameter of 5 millimeters, an outer diameter of 11 millimeters, and a width of 4 millimeters. Its compact size makes it suitable for applications where space is limited and precise motion control is required.

ACER Racing's 6803 ceramic silicon nitride bicycle bearing is a high-performance component that offers numerous advantages to cyclists. Its advanced ceramic construction, reduced friction, exceptional durability, and resistance to moisture and corrosion make it an ideal choice for professional cyclists and enthusiasts looking to enhance their cycling experience and performance.

ABEC 7 precision with Grade 5 ceramic balls made from our World Champion Ceramic Nitride Pro Series Bearing Material. 17x30x7mm Ceramic Ball Bearing size 6903 ball bearing. This 17x30mm bearing is a super high performance ceramic bearing which can be used for many high performance applications including bicycles (this is a direct performance upgrade for a Fulcrum R4-004 bearing) and as a direct performance upgrade and replacement for the HPI Baja.

Moreover, the 6803 ceramic bearing exhibits exceptional durability and longevity. The silicon nitride material has superior wear resistance, ensuring minimal wear and extended service life even in harsh cycling conditions. This translates into reduced maintenance requirements and cost savings for cyclists.

Unusual Noises Coming From the Wheels. Listen carefully. The most common and often most-identifiable symptom associated with a bad wheel bearing is noise coming from the wheel or tire area of the moving vehicle. You may mistake this as engine noise, but when you listen closely you will likely hear grinding or grating that gets louder as the vehicle accelerates. Since wheel bearings are not known for wearing out too frequently, the noise is typically suspected to be something else and the problem gets overlooked.

1/4x3/8 Flanged CERAMIC BEARING. Made from our World Champion Ceramic Nitride Pro Series Bearing Material. Super high precision, oiled with our 100% synthetic SIN oil.

If you are looking for a bearing that offers high performance, low friction, and long life, then a ceramic ball bearing may be the right choice for you.

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6803 Ceramic Ball Bearing Dimensions 17x26x5mm also referred to as a size 61803 Ball Bearing. Also a direct performance upgrade for Fulcrum RS-011 bearing.  ABEC 7 precision with Grade 5 ceramic balls.

A: Driving with a bad wheel bearing is dangerous as it can lead to wheel failure and accidents. It should be addressed immediately.

ACER Racing has nearly 30 years experience in the racing industry and has earned a reputation of equipping the world’s fastest bikes, skateboards, cars, motorcycles, fishing reels and RC cars with ceramic ball bearings. Our ceramic ball bearings will allow you to race faster and longer which translated into all kinds of advantages on the road. Our top of the line Ceramic Nitride Pro Series ceramic ball bearings can be purchased in a full ball bearing kit for RC applications or individually for all applications. Our Ceramic ball bearings have become the standard for competitive bearing performance. Each of our ceramic ball bearings comes with 100% Synthetic Made in USA SIN lightweight oil which ionically bonds to the bearing surfaces allowing it to cool down and increase durability. Each of our ball bearings is sealed (except where noted) on both sides with a dual no contact seal, and everything is enclosed in a HSR inner cage for high speed durability and performance.

Additionally, the ceramic material's excellent wear resistance and low maintenance requirements make the 688 bearing a reliable and cost-effective choice. Its exceptional resistance to wear and corrosion ensures prolonged operational lifespan and reduces the need for frequent maintenance and replacements.

5x10mm CERAMIC BALL BEARING designed specifically to withstand the high stress and heat caused by clutchbells during competitive use. We have engineered a specific internal race tolerance within the ball bearing, used our special HSR cage for high speed reliability and injected the ball bearing with our SIN grease to help it stay cool under high stress. This is the same clutch ball bearing used by our pro racing team. The best clutch ball bearing hands down.

Moreover, the lightweight nature of ceramic materials contributes to reducing the overall weight of the bicycle. This weight reduction can enhance acceleration, maneuverability, and overall cycling performance.

15x24x5mm CERAMIC BALL BEARING size 6802 bearing also referred to as a 61802 bearing.  ABEC 7 precision with Grade 5 ceramic balls.  Made from our World Champion Ceramic Nitride Pro Series Bearing Material. Super high performance for use anywhere a 15x24x5mm bearing is required including performance bicycle use.

24x37x7mm Ceramic Ball Bearing Size MR24377 Bicycle Bearing 24mm inner diameter x 37mm outer diameter x 7mm width Grade 5 Silicon Nitride Ceramic Balls, Super High Performance smooth nylon inner cage, dual removable no contact rubber seals, 100% synthetic American ACERGoo lubrication.  ABEC 7 precision.

May 24, 2018 — In fact, you might pay attention to your wheel bearings only when something goes wrong. But driving on a bad wheel bearing can eventually cause ...

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One of the standout features of our 688 ceramic bearing is its construction material. It is crafted from advanced ceramic materials silicon nitride which has outstanding characteristics such as high hardness, low density, and excellent corrosion resistance. Consequently, the 688 ceramic bearing exhibits exceptional durability, prolonged lifespan, and reliable performance even under demanding conditions.

Car Feels Loose. Does your car feel loose? When you hear professional drivers talk about a “loose” car, you may not know what that means. It often refers to the steering of the vehicle, which can include wheel bearings. Wheel looseness, or also called wheel play, is another common symptom of a bad wheel bearing. As the bearing begins to wear down, they become loose inside the wheel hub and spindle, which makes your vehicle feel loose while steering.

10x15mm CERAMIC BALL BEARING size 10x15x4mm or also known as size 6700 ball bearing. Made from our World Champion Ceramic Nitride Pro Series Bearing Material. Lubed with our famous SIN lightweight synthetic oil and sealed on both sides to protect against contamination. These can be used anywhere a 10x15x4mm ball bearing is required. Traxxas racers this is a direct high performance replacement for the Traxxas 5119 bearingSize 6700 ball bearingEquivalent to Tamiya size 1510 bearing, Traxxas 5119 bearing, Team Associated 1731 bearing

One of the primary benefits of 6804 ceramic silicon nitride cycling ball bearings is their reduced friction coefficient. Ceramic balls have a smoother and harder surface compared to steel balls, resulting in lower friction during rotation. This leads to improved efficiency, reduced rolling resistance, and enhanced power transfer, allowing cyclists to pedal more efficiently and achieve higher speeds.

Whether used in road bikes, mountain bikes, or other cycling disciplines, 6804 ceramic silicon nitride cycling ball bearings deliver reliable and efficient performance, enhancing the overall cycling experience for riders.

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Additionally, ceramic silicon nitride skateboard bearings exhibit excellent corrosion resistance. They can withstand exposure to moisture, dirt, and debris commonly encountered in skateboarding environments. The corrosion resistance ensures reliable and consistent performance, even in challenging conditions, contributing to the longevity of the bearings.

ACER Racing ball bearings are not just the hardest balls out there, they are also exceptionally smooth, light and, most of all, fast. Whether you’re looking for bearings made of silicon nitride ceramic for hobby to aerospace to cycling to RC cars and more, you can depend on the very best in quality and customer service that’s as speedy as our product. In any sport where tiny differences can mean big time wins, we work hard to give our customers the edge.

A: Typically, wheel bearings last between 85,000 to 100,000 miles, but this can vary based on driving conditions and maintenance.

ACER Racing's 688 ceramic bearing is a high-quality and versatile component that finds extensive use in numerous industrial applications. It belongs to our family of miniature ball bearings and is highly regarded for its exceptional performance and durability.

1/8" CERAMIC NITRIDE PRO SERIES BALLS - made from pure Si3N4 Silicon Nitride - 12 ceramic balls per packThese are the metric equivalent of 3.175mm Ceramic Silicon Nitride BallsNote: these 1/8" Silicon Nitride balls are being used successfully in competitive bicycling or as differential balls. Specifically they can be used in Shimano pedals model #s 7401, 6402, 6401, 1056, M731, M525 as well as Campagnolo triple bearing system pedals, Mavic headsets and some freewheels.

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Welcome to ACER Racing's new line of Ceramic Ball Bearings made for competition use in high performance RC car engines. These are from our Ceramic Nitride Pro Series line of world champion bearings.

Price is for one ball bearing.UPDATE: ACER Racer Shasa Lackner received his trophy as "Swiss Junior Champion" using ACER Racing ceramic engine bearings in his Max Power engine. Shasa won the main final by nearly 2 laps, and set a new lap record of 14.0 seconds and his ACER Racing ceramic engine bearings worked perfectly for the entire weekend.

Chances are when you start hearing a loud noise from under the hood of your car as you’re driving, you automatically think it’s an exhaust leak or your car is going to break at any moment. But have you thought about the possibility of a broken — or nearly broken — wheel bearing causing that noise?

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Wheel bearings are essential in the operation of your vehicle. More precisely, a wheel bearing is crucial for the proper function of the hub, tire, and wheel assemblies to work together. The wheel bearing allows friction-free movement and rotation of the hub assembly, and thereby provides smooth tire and wheel rotation. Worn-out or damaged wheel bearings can lead to a range of problems that affect vehicle performance and safety, making it essential for drivers to recognize the signs of trouble.

Engineered for greater longevity and higher output, the new BeerBlast® provides the exact blend of CO2 and Nitrogen, protecting the kegged product quality ...

ACER Racing's 688 ceramic bearing is a remarkable component with a compact size, advanced ceramic construction, and exceptional performance characteristics. Its versatility, durability, and ability to enhance overall system efficiency make it a favored choice in various industries, including microelectronics, robotics, and precision machinery.

Made from our World Champion Ceramic Nitride Pro Series Bearing Material. 5x11mm CERAMIC BALL BEARING size MR115. This 5x11x4mm bearing is intended for high speed use. For 5x11mm clutch bearings use part C053For 5x11x4mm ceramic ball bearing for brushless motors use part C069This is the equivalent of a Tamiya size 1150 ball bearing

With ACER Racing's National and World Champion reputation in the high performance ball bearing industry we set out to engineer the best ceramic skate bearing at any price.

5x10mm CERAMIC BALL BEARING size 5x10x4mm or MR105. This bearing has different internal tolerances than the 5x10 mm clutch bearing and we use ACER Racing's world famous lightweight SIN synthetic oil in our special process for higher speeds. 5mm inner diameter, 10mm outer diameter and 4mm width

Made from our World Champion Ceramic Nitride Pro Series Bearing Material.12x24x6mm Ceramic Ball Bearing size 6901 ball bearing.  ABEC 7 precision with Grade 5 ceramic balls.  This 12x24mm bearing is a super high performance ceramic bearing which was engineered as a direct performance upgrade and replacement for the HPI Baja or many cycling applications.

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The ceramic construction of the 6803 bearing offers numerous advantages. First and foremost, it significantly reduces rotational friction compared to traditional steel bearings. This results in improved efficiency and reduced energy loss, allowing cyclists to transfer power more efficiently and achieve better performance.

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The size 6804 designation refers to the bearing's dimensions, with an inner diameter of 20 millimeters, an outer diameter of 32 millimeters, and a width of 7 millimeters. These dimensions make them compatible with various bicycle components, such as hubs, bottom brackets, and headset assemblies.

Vehicle Pulling to One Side While Driving. Are you doing the steering, or is the car driving where it wants to? When a wheel bearing corrodes or becomes pitted, the smooth exterior lining is gone and the vibration is transmitted to the tires which may feel like it is “pulling” to one side or the other. As the bearing on one side deteriorates, it puts more pressure on the opposite bearing, leading to uneven wear and increased friction. This uneven wear generates heat, which further accelerates the degradation of the bearing. As a result, the affected wheel may start to wobble or vibrate, robbing the vehicle of its stability and smooth handling, especially when cornering or driving at higher speeds.

These 14x25.4x6mm ceramic bearings feature our diamond polished Silicon Nitride ceramic balls plus a super high speed PEEK inner cage to withstand the heat and stress of your engine. Proprietary internal tolerances have been incorporated into this ceramic bearing as well.

Ceramic ball bearings offer a number of advantages over steel ball bearings. They are more resistant to wear and tear, they can withstand higher temperatures and pressures, and they are lighter. These advantages make ceramic bearings ideal for use in a variety of applications, including:

Made from our World Champion Ceramic Nitride Pro Series Bearing Material. 20x32x7mm Ceramic Ball Bearing size 6804 ball bearing. This 20x32mm bearing is a super high performance ceramic bearing which was engineered as a direct performance upgrade in cycling applications, as a replacement for the HPI Baja or anywhere a size 6804 bearing is required.  ABEC 7 precision with Grade 5 ceramic balls.As a competition level bicycle bearing, ACER Racing's world famous 6804 ball bearings offer exceptional performance, durability, and efficiency, making them a popular choice among cyclists and bicycle enthusiasts.

8x16mm CERAMIC BALL BEARING size 8x16x5mm or 688 size bearing. Made from our World Champion Ceramic Nitride Pro Series Bearing Material. Our 688 bearing is sealed on both sides with our special no contact grey seal to protect against the elements without friction producing seal contact with the bearing elements. Inside our 688 bearing is our unique HSR inner cage which is designed to withstand high RPM, high stress and heat without causing bearing fatigue. The HSR cage houses our diamond polished silicon nitride ceramic balls which have been proven race after race to be the fastest, lightest, smoothest and hardest balls in the industry. Lightly oiled, not greased, with our slippery and fully synthetic SIN oil to keep your bearing running fast and cool.

If you suspect you are driving with a broken — or nearly broken — wheel bearing, stop in and see us today. Our team of trained technicians will quickly assess and repair your vehicle and have you back on the road in no time!

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New generation PEEK polymer was chosen for the cages because of its superior combination of strength and flexibility, high operating temperatures, and high chemical and wear resistance. The design of the cage and material used are of paramount importance for the performance of the cage as well as for the operational reliability of the bearing itself. Bearing cages are mechanically stressed by friction, strain and inertia. They may also be subjected to the chemical action of certain lubricants, lubricant additives or products of their ageing or organic solvents. The relative importance of these considerations can be affected by other operational parameters such as elevated temperatures, shock loads, vibrations or combinations of these and other conditions. The materials from which the bearing components are made determine to a large extent the performance and reliability of the rolling bearings. This why ACER Racing has used PEEK cages for our ceramic engine bearings. PEEK cages have an excellent combination of strength and elasticity. The good sliding properties of the polymer on lubricated steel surfaces and the smoothness of the cage surfaces in contact with the rolling elements produce the lowest amount of friction so that heat generation and wear in the bearing are at a minimum. The low density of the material means that the inertia of the cage is small contributing to greater speed. The excellent running properties of polymer cages under lubricant starvation conditions permit continued operation of the bearing for some time without risk of seizure and secondary damage. Our PEEK bearing cages show no signs of aging by temperature and oil additives up to +200 °C (392°F).

We seal our ACER SK8 ceramic skate bearings with two no contact grey seals which will resist the elements while allowing simple removal for easy cleaning when necessary. Each seal is embossed with our trademark "ACER RACING CERAMIC" logo to insure that you are receiving the original ACER SK8 ceramic skate ball bearings.

The ceramic balls in the MR115 bearing provide several benefits. Firstly, they have reduced friction compared to steel balls, resulting in improved efficiency and reduced energy loss during rotation. This leads to enhanced performance and reduced wear on the bearing and surrounding components.

Our 6803 ceramic silicon nitride bicycle bearing is a high-performance component specifically designed for cycling applications and anywhere a high performance 6803 bearing is required. It is a specialized type of ceramic bearing that offers exceptional performance, durability, and reliability, making it a popular choice among professional cyclists and cycling enthusiasts.

Ceramicbearings

The average cost for a Wheel Bearing Replacement is between $283 and $377. · Quality Car Repair. Fair Prices. · Wheel Bearing Replacement · Need a repair? Trust ...

The MR115 ceramic ball bearing also exhibits excellent temperature stability. Ceramic materials can withstand high temperatures without losing their performance, making them suitable for applications involving high-speed rotation or exposure to extreme heat.

Ceramic bearings are often used in applications where high performance, low friction, and long life are required.  Ceramic balls are made from a variety of materials, including silicon nitride, zirconia, and alumina.  We only use silicon nitride ceramic balls as they are the hardest and most durable.  They are much harder than steel, which makes them more resistant to wear and tear. Ceramic balls are also less porous than steel balls, which means that they can withstand higher temperatures and pressures.

Furthermore, the lightweight nature of the ceramic material reduces the overall weight of the bicycle, contributing to improved speed and maneuverability. The reduced weight also helps to minimize rotational inertia, allowing for quicker acceleration and more responsive handling.

First we started with our tried and tested Ceramic Nitride Pro Series silicon nitride balls (Si3N4). The same super hard balls that gave us the reputation as "the hardest balls in the industry." These balls are matched for consistent concentricity per set. They are polished using diamonds for a super smooth and shiny finish. Their durability is unmatched by any other ball or material in the industry. With a melting temperature of 2552 degrees F and the best modulus of elasticity in the world, these are the best balls period.

Doesn't get any better than these: plus they are super lightweight. Also the fastest fidget spinner bearing. Try yours today. Price is per one ball bearing. Sealed on both sides.

Ceramic silicon nitride cycling ball bearings also demonstrate excellent corrosion resistance. They can withstand exposure to moisture, dirt, and other environmental elements commonly encountered during cycling. This corrosion resistance ensures consistent performance and longevity, even in challenging weather conditions.

5X8MM Ceramic Ball Bearing size MR85. Made from our World Champion Ceramic Nitride Pro Series Bearing Material. Lubricated with our lightweight SIN synthetic oil and sealed on both sides. Can be used in any application that requires a 5x8x2.5 mm bearing. Price is for 1 bearing.Size MR85 bearing equivalent to a Tamiya size 850 bearing or Traxxas 5114 bearing size

You can rely on our promise of honesty and competence when we service your vehicle. Our customers know that they will get a fair price for services provided.

8 piece ACER SK8 Size 608 Ceramic Skate Bearing 8x22x7mm. Introductory price: these are the BEST skate bearings anywhere - GUARANTEED - or your money back! ABEC 7, 100% synthetic ACER Racing lubricant, superlite bearings. If you’re looking for the longest spinning 608 skate bearings you came to the right place. These are for 8mm axles (if you need the 7mm axle version click HERE)

The size 608 designation refers to the dimensions of the bearing, with an inner diameter of 8 millimeters, an outer diameter of 22 millimeters, and a width of 7 millimeters. This standardized size makes them compatible with most skateboard wheels and allows for easy installation.

Ceramic silicon nitride ball bearings offer significant advantages over traditional steel bearings, making them popular among skateboarders. Silicon nitride ceramic material is known for its exceptional hardness, reduced friction, resistance to wear, and corrosion resistance.

CERAMIC NITRIDE PRO SERIES ball bearing for a wide variety of applications. Commonly used in some transmissions and also in electric motors these are the most efficient electric motor bearings. Fits the front bearing of certain brushless motors that use a "Standard" bearing size. Please consult your motor's manual to see which ball bearing size your brushless motor needs. It is either 1/8x3/8 or 3/16x1/2. The Team Trinity D3 motor uses two 1/8"x3/8" bearings and needs two. Price is for one bearing. Need Ambassador Reel fishing bearings? These R2 bearings are the best for that application if you are looking for a very long and smooth cast.

At ACER Racing, we are internationally known for making the hardest, lightest and smoothest balls in the industry and our bearings in every material are designed with performance in mind. Our super lightweight ceramic bearings are lighter and less weight, lower friction and less rotational weight means you race faster, longer.

Moreover, ceramic balls have exceptional wear resistance, allowing the MR115 bearing to have a longer service life compared to steel bearings. This translates to reduced maintenance requirements and cost savings for the user.

The "688" designation refers to the bearing's specific size and dimensions. It has an inner diameter of 8 millimeters, an outer diameter of 16 millimeters, and a width of 5 millimeters. This compact size makes it suitable for applications where space is limited, such as small motors, microelectronics, and precision instruments.

Ceramic silicon nitride ball bearings provide several advantages over traditional steel bearings. Silicon nitride ceramic material offers superior hardness, reduced friction, enhanced wear resistance, and resistance to corrosion and high temperatures.

6806 Ceramic ball bearing with dimensions of 30x42x7mm. 30mm inner diameter, 42mm outer diameter and 7mm width. ABEC 7 precision with Grade 5 Silicon Nitride Ceramic balls, the hardest and strongest ceramic material available, ACERGoo Made in USA 100% synthetic lubrication, dual removable seals. These are the ultimate 6806 bearing and can also be used in BB30 bearing applications. We use a 19 ball design compared to lesser 6806 bearings which use only 14 balls.  The use of more balls allows for a more efficient, smoother, lower friction and more durable bearing. Price is for 1 bearing as shown.

R188 CERAMIC BALL BEARING engineered with proprietary specific internal race tolerances for high speed reliability. Sealed on both sides as shown. The width of this bearing is 3/16". Overall dimensions of this bearing is 1/4" inner diameter, 1/2" outer diameter and 3/16" width. This is engineered as a very smooth and fast fidget spinner bearing but has many applications. Open design with stainless races and cage, 10 Ceramic Nitride Pro Series balls, with no seals for longest and fastest spin.

The construction material of the 6803 ceramic bearing is silicon nitride. Silicon nitride is a type of advanced ceramic material known for its excellent properties, including high hardness, low density, and superior corrosion resistance. These properties make it an ideal choice for demanding cycling applications.

Tire Wear and Tear. What about your tires? We all know the importance of rotating your tires to promote even wear, but did you know a broken wheel bearing can lead to uneven tire wear too? The looseness of the wheel and the vibration that reverberates through the wheel cause your tires to wear unevenly, meaning you are more likely to have to invest in new tires sooner.

Furthermore, ceramic silicon nitride bearings exhibit exceptional durability and wear resistance. They can withstand high loads, impacts, and harsh cycling conditions without premature wear or damage. The increased durability of these bearings translates into extended service life, reduced maintenance requirements, and enhanced reliability for cyclists.

Price is for 1 bearing. These size 24x37x7mm super high performance ball bearings are from World Champion ACER Racing’s Ceramic Nitride Pro Series collection. They include diamond polished Grade 5 Silicon Nitride balls, which are the hardest ceramic balls on the planet (even harder than the white ceramics), dual removable no contact seals so they are completely serviceable, a high speed low noise low friction nylon cage, and 100% synthetic American lubrication. Lighter, faster: the ACER Racing way since 1989.

202358 — The symptoms of a bad wheel bearing are still a rumble that varies with speed, and wheel bearing play is still discernible by doing the 6-and-12 push-pull-rock ...

Ceramic ball bearings are also more expensive than steel ball bearings. However, the increased performance and durability of ceramic bearings often make them a worthwhile investment.