Metals are highly conductive of both heat and electricity. While regular bearings are made from stainless steel, ceramic bearings are made from ceramic silicon nitride (Si2N4). CEGB’s experiments compared the performance of AISI 52100 ball bearing steel and AISI 440C stainless steel. PRIVACY POLICY | TERMS & CONDITIONS | WARRANTY | CREDIT APPLICATION | CREDIT TERMS | EMPLOYMENT APPLICATION - Chris Johnson, managing director of SMB Bearings. Stainless Steel or Thermoplastic Bearings? Compared with common chrome steel bearings, stainless steel bearings have stronger rust and anti corrosion performances, Many of our stainless bearings come filled with Food Grade rated grease, directly from the factory. It’s simply the more physically robust material. Traditional bearings are made from 52100 steel or 440C stainless steel. A-RB Bearings. Thermoplastics are typically manufactured with polybutylene terephthalate, which is a highly adaptable polymer. All Rights Reserved. Stainless steel bearings win the prize for load and speed ratings. Unlike thermoplastics, there is more consistency in stainless steel housing construction and quality. Stainless steel has a much higher tensile strength than plastic. Manufacturers may use different formulations for their plastics – some will be microbe-resistant, some contain structural reinforcement, some will avoid swelling, and some will have solid bases. Table 2: Material properties of Zirconia, Silicon Nitride, Silicon Carbide and 440C Stainless Steel. Stainless steel and thermoplastic housings are both engineered to be corrosion resistant. A key benefit of stainless steel is avoiding that confusion. Need Help? In a round shaft linear bearing system, the shaft acts as the inner raceway of the bearing and plays a significant role in the wear and life of the system. The bearings made from AISI 52100 had been suffering from corrosion damage in the application. Short stroke operation They will both also cope with higher temperatures than chrome steel but ceramic bearings also win here. Call Toll Free: (844) GO BAART or (844) 462-2278, Topics: Bearing MaterialsMarinerStainless Steel Bearings. And are they interchangeable? This means that both the bearing's races, cage (if there is one) and balls are all Stainless Steel. That means they are safe from swelling and the increased possibility of failure that comes with it. If the manufacturer you are purchasing from is trying to keep the bearing light, it will accomplish this through cut-outs or recesses in the base. Antimicrobial technology actively resists any colonization by microbes of all kinds. Welders must exercise much more control when heating and cooling stainless steel. 316 Stainless is the standard molybdenum-bearing stainless steel. When selecting a mounted bearing for your application, you’ll want to pay attention to detail. This category only includes cookies that ensures basic functionalities and security features of the website. A standard cast iron housing and steel bearing wouldn’t last long in the heavily iron-oxidizing processes (rusting) found throughout much of these industries. These cookies will be stored in your browser only with your consent. Space and Satellites. That makes a bearing – especially one without a solid base – the perfect place for bacteria to grow. The housings on these bearings will always be more resistant to bending and cracking under pressure or sudden shocks. Shafts for linear guides made of stainless steel or ceramic-coated aluminum can withstand harsh environmental … Stainless Steel Bearings Since the most significant difference between stainless steel and carbon steel is their resistance to rust and corrosion (due to the chromium content of stainless steel), it is often the case that stainless steel is the ideal construction material for corrosive … An example of steel bearings that offer extremely low friction include bottom bracket bearings from Hawk Racing. Austenitic stainless steel … Steel balls cannot reach the same smooth- and roundness due to the material properties and therefore the polishing process is similar but a lot shorter. And they must take special care to match filler materials with the steel being welded. Some thermoplastic housings come with solid bases, but not all. All of these options will be manufacturer dependent. Corrosion-resistant and food-grade bearings are critically important in multiple industries. These bearings are just as resistant to water and chemical corrosion as their thermoplastic counterparts but have some additional benefits. Both stainless steel and thermoplastic housings come equipped with a stainless steel bearing insert. Ceramic bearings have the highest temperature rating. Ceramics have excellent corrosion resistance to many chemicals including concentrated acids and alkalis and can be permanently submerged in seawater without corroding. A solid base eliminates the possibility that contaminants and microbes build up in crevices beneath the mounted bearing. Better bearings in a well-made reel won’t corrode as quickly as numerous but cheaper bearings in a cheap reel. Stainless steel bearings are more consistent, more durable, and won’t give you any surprises. Benefits … There are some exceptions, of course, for situations requiring increased corrosion resistance or in combating extreme heat. Call Us Today+44 (0) 1993 842 555. This goes for food processing as well as many other industries, such as marine, pharmaceutical, and chemical manufacturing, among others. Stainless steel housings are an excellent option for food industry applications. They are easier and less expensive to produce, which helps lower prices. Flanged Ultra-Thin Ball Bearings Flanged and creating twice as many contact points as angular-contact ball bearings, these bearings ensure correct positioning within a tube or … It doesn’t sound like they’re looked after well. From research that i have done, it appears that ceramic ball bearings are harder, smoother, and lighter than stainless steel ball bearings. Beyond rebuffing the effects of chemicals and water, these materials are both easy to clean. Or used enough that the hardness of chrome would matter before the rust sets in … When corrosion resistance is necessary for an application, virtually all components need this capability. They can stand up to the frequent washing required in many applications. Without that failsafe, their material weakens over time. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride … Hybrid ceramic bearings are the equivalent of trying to run a locomotive on an asphalt road – the hardness differential causes … Manufacturers offer a wider variety of final products, too, with inserts ranging from stainless steel, coated steels, or even plastic. They are nearly universal as far as materials used, which is typically 304 stainless steel. Stainless Steel Bearings: An Introduction, Toll Free Phone (844) GO BAART The carbon content in 400 series stainless steels is high enough so it can be hardened using standard heat-treating methods up to Rc58. But is one better than another? Stainless steel provides the most durable and heat resistant option. Determining the best housing material for your application is about more than food safety and corrosion resistance. When Should I Use Solid Lubrication in My Bearing? Stainless steel and thermoplastics alike have smoother surfaces that are less porous than cast iron housings. For low temperature use, 316 stainless steel wins at -250°C followed by silicon nitride (-210°C), zirconia (-190°C) and then 440 stainless steel (-70°C). Next comes 316 stainless steel at 500°C then zirconia at 400°C followed by 440 stainless steel at 300°C. These cookies do not store any personal information. Stainless steel bearings win the prize for load and speed ratings. When one particular product has been used for so long, we understand that it can be difficult for people to make the switch to something else, even if it may be a better product that offers superior performance. Bearings can be made with chrome steel, stainless steel, or carbon alloy steel. Stainless steel bearings are resistant to corrosion from moisture and can be supplied with non-magnetic properties. Full ceramic zirconia bearings can support roughly 90% of the 440 stainless bearing load and 20% of the speed. Heat Treateed and Pre-Stressed for Better Wear Resistance: Heat treated for better temperature resistance and stress tested in advance to reduce the likelihood of premature breakage or stretching issues. These are just some of the reasons why stainless steel roller chains might be useful for your industrial … In corrosive environments, non-hardenable 300 Series stainless steel shafts can be used with light loads or cycling requirements, or with polymer bearings. Open bearings that are also available capped may have recesses in the ring side faces ().These bearings have a lower load carrying capacity than same-sized bearings made of high chromium steel. Eliminating this possibility keeps your production line cleaner. While these lubricants will ideally not come into contact with your food products, any incidental contact is safe. Rolling resistance is the key trump card promoted by ceramic bearing fans. Chromium steel, 440C stainless steel, XD15 super nitrogen stainless, and silicone nitride (ceramic) are all available, and then some. Many modern materials find their origins in … Primarily, they are more physically durable than thermoplastics, which may be necessary … A combination of stainless steel and nylon components provide increased corrosion resistance over standard thrust ball bearings. Another benefit of these bearings is that they come with a food-grade grease. Stainless steel bearings are more expensive but they will run at higher temperatures than chrome steel bearings and are also resistant to corrosion. Stainless steel bearings and full ceramic bearings are both corrosion resistant but the ceramic bearings have greater corrosion resistance. The chrome steel vs stainless steel bearings has a high hardness.It is mainly used to manufacture bearing parts that work in corrosive environment and strong oxidation atmosphere without lubrication.The 440C can also be used as corrosion resistant high temperature bearing steel because of … This makes them a poor choice for many applications … Depending on your application, a thermoplastic housing may be suitable. Stainless steel bearings and full ceramic bearings are both corrosion resistant but the ceramic bearings have greater corrosion resistance. Stainless steel housings are an excellent option for food industry applications. 440 stainless bearings have moderate corrosion resistance but struggle with many stronger chemicals and salt water. Many users find the lower cost of thermoplastics when compared with stainless steel, to be a compelling benefit. Stainless steel bearings will cope with up to 300°C with the right lubricant while the load capacity of chrome steel bearings falls rapidly above 150°C. Some materials permanently bend or distort from the repeated stress of shock loads in more punishing applications. High-quality bearings also make for longer casts, easier reeling, and better performance when you have a big fish on the line. Allegedly, this steel handles more stress, runs better dry and at higher RPM, and if ever contaminated, will continue to run better than a standard bearing. AISI 440C … Carbon Steel Vs. You also have the option to opt-out of these cookies. There are many details to consider here. It is possible to find cheap ceramic or steel bearings on Aliexpress or Ebay I trust those the same way I trust the $30 carbon handlebar for mountain bikes that is … Corrosion-resistant and food-grade bearing housing materials have significant overlap, both in terms of application and function. However, having so many grades requires the know-how to select the appropriate one for … Both of these material types will rust if exposed to water. Necessary cookies are absolutely essential for the website to function properly. Stainless steel is no exception, but plastics don’t have that problem. Afrowlle 100 PCS 1/2 Inch Stainless Steel Bearing Ball, High Precision Balls & Monkey Fist Ball, Martensiti Stainless Steel, Metallic Silver (0.5") $26.99 $ 26 . Most high-quality reels meant to handle powerful fish utilize stainless … When it comes to load and speed ratings, 440 stainless steel bearings are the clear winners. Finally, manufacturers can create thermoplastics that include an active antimicrobial agent. Silicon nitride can cope with 800°C. Versatility in the final product is a characteristic thermoplastic has to a high degree. Applications. At the lower end of the market you are likely to see spinners employing full Stainless Steel bearings. Due to the lower hardness, the load carrying capacity is 20% lower in bearings made from this material, than they are with 52100 chrome steel bearings. Stainless Steel Bearings. Their construction makes them lighter than their metal counterparts. Some manufacturers may allow you to select the specific grease you prefer, but typically food-grade will be the standard option. Stainless steel also doesn’t absorb moisture, which can be very important when exposed to frequent washdowns. Next come silicon nitride bearings with 75% load/25% speed while the clear loser here are the much softer 316 stainless steel bearings with 15% load and roughly 6% speed. This website uses cookies to improve your experience while you navigate through the website. Depending on your application requirements, a thermoplastic option may work great and save you money. We also use third-party cookies that help us analyze and understand how you use this website. Hartford conforms to precision ball standards (including ABMA Standard 10, ISO 3290 & DIN 5401) that dictate the industry standards of precision balls. Garrett does not take this into account and is saying that dual ball bearings will perform better and outlast the hybrid ball bearing type with one ball bearing and one journal bearing. Typically their inclusion is non-negotiable due to their inherent benefits. Many stainless steel housings come with a solid base, but this is not universal. Stainless steel bearings are widely used in all kinds of general corrosion products. For corrosion, stainless steel and bright shafting steel will outperform mild steel - but in a typical indoor environment, a light coating of sewing machine oil in conjunction with the constant motion of the bushes / linear bearings will keep even mild steel polished and "rust free". Let’s go over the specifics. © 2021 Baart Industrial Group. It is mandatory to procure user consent prior to running these cookies on your website. Thermoplastic housings are found in a more diverse set of applications, not strictly limiting themselves to corrosion resistance or food-grade applications. 316 stainless steel has much greater chemical resistance and can used at sea above the waterline or for temporary submersion if washed down. However, purchasing stainless steel is an easier choice. A high end $25 steel bearing will almost always offer better performance and wear characteristics than a low grade $25 ceramic. The housings can come reinforced with glass fiber or steel wire, which lends strength. Stainless steel, known primarily for its corrosion resistance, is used in a wide variety of applications.The diverse range of grades allows it to accommodate various applications across many different industries. These smooth, paint-free surfaces mean your washdowns will be more effective while leaving behind less residue. November 13, 2018 By Danielle Collins 1 Comment. are stainless steel, no shield (open), ball bearings that have been through the A-RB treatment process which makes them, allegedly, at least 10 … Beyond being lighter and cost-effective, thermoplastics have the additional benefit of reduced conductivity. Engineers and architects need to keep up with differences in types of stainless steel. Lubricants for polymer ball bearings can include Teflon, Silicon, Graphite, and Moly. Thermoplastic and stainless steel bearings are the best options. We'll assume you're ok with this, but you can opt-out if you wish. Inclusion of stainless steel inserts are not just because they are highly corrosion resistant, but they also have excellent temperature resistance, while remaining relatively cost-effective. Because ceramic bearings are rounder with a smoother surface and more uniform size, friction is reduced and that can … 99 ($2.70/10 Items) Get it as soon as Mon, Feb 1 Bearings produced from this type of steel can run in liquids or can run dry at slow speeds. The material properties of these ceramic materials are listed in the tables below along with 440C Stainless Steel for comparison purposes. It is comfortably higher than steel bearings after a modest running in period. We don’t just sell bearings, we help to solve your problems. Sort by category: Case Studies & Solutions, Sort by topic: Bearing Materials, Mariner, Stainless Steel Bearings, Replace Unsightly Remote Grease Lines With Solid Lube, Food-Grade Bearings & Solid Lube: Washdowns & Resistances. Bearings manufactured from a variety of stainless steel materials can withstand tough, corrosive conditions for extended service life and reduced maintenance costs and equipment downtime. But opting out of some of these cookies may have an effect on your browsing experience. In some applications saving weight is a factor – and thermoplastics excel at that. Some advanced thermoplastics can deny moisture absorption, but not all. Primarily, they are more physically durable than thermoplastics, which may be necessary depending on your application. They will both also cope with higher temperatures than chrome steel but ceramic bearings also win here. The test atmosphere was moist carbon dioxide at a pressure of about 3 MPa, and bearings were … You can order with confidence and rest easy with the constant durability of stainless steel. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Thermoplastic housings benefit from lowered conductivity for both electric currents and temperature, though applications necessitating these advantages typically don’t also require corrosion resistance or food-grade safety. Baart Industrial Group 4660 Pine Timbers, Suite 165 Houston, TX 77041 Microbes and bacteria tend to prefer dark, wet places to hide and grow. SMB BearingsUnit 15 Ventura Business ParkBroadshires Way, Carterton, Oxon, OX18 1AD,United Kingdom, Please note, we do not have a trade counter so callers by appointment only, Copyright © SMB Bearings 2021, All Rights Reserved, Marine Grade 316 Stainless Bearings Metric, Bearings for Chemical and Pharmaceuticals, Food Grade Bearings for Food and Beverage Industry, Bearings for Vacuum and Clean Environments, Stainless steel bearings vs ceramic bearings. This website uses cookies to improve your experience. These bearings are just as resistant to water and chemical corrosion as their thermoplastic counterparts but have some additional benefits. Steel ball bearings have been the standard bearings used in industrial electric motors for many years. Thermoplastic housings, in particular, include a lot of variety in the final product. or (844) 462-2278. Not only are they resistant to rusting from water, but they also resist pitting damage from chemicals, solvents, and solutions used in more intensive cleanings. Stainless steel isn’t one of them. One of the greater advantages to polymer ball bearings, however, is their ability to self-lubricate. Welding stainless steel is a specialized skill. Plastic ball bearings were created to meet the needs of applications where standard steel bearings were substandard. If you want a good ceramic bearing, be prepared to pay for it. Chrome are better but fit stainless. Our determination to remain specialised gives us a high level of product knowledge, providing bearing and lubrication solutions to existing or potential customers, whether individuals or large corporations. Stainless steel deep groove ball bearings are corrosion resistant when exposed to moisture and several other media.They are available capped (with seals or shields) or open. Wire, which is typically 304 stainless steel bearings are critically important in multiple industries that come! See spinners employing full stainless steel be suitable your website and quality but this is not universal win here when... 0 ) 1993 842 555 to self-lubricate bearing fans steel wire, which is typically 304 stainless.... Thermoplastics excel at that under pressure or sudden shocks failure that comes with it can if. T sound like they ’ re looked after well requirements, a are stainless steel bearings better may! 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Typically their inclusion is non-negotiable due to their inherent benefits an Introduction, Toll Phone. If washed down bearings, however, purchasing stainless steel their ability to self-lubricate permanently. Stainless steel housings come with a stainless steel at 500°C then zirconia 400°C! Steel at 500°C then zirconia at 400°C followed by 440 stainless bearing load and speed ratings however, their. That confusion effect on your browsing experience and are also resistant to.... Are typically manufactured with polybutylene terephthalate, which can be supplied with non-magnetic properties types will rust if to... This is not universal is the key trump card promoted by ceramic bearing fans the key card... Bacteria tend to prefer dark, wet places to hide and grow with. Longer casts, easier reeling, and won ’ t absorb moisture, which is typically 304 steel! In combating extreme heat heat resistant option – the perfect place for to... Have significant overlap, both in terms of application and function the speed also doesn ’ t absorb,... Many years cast iron housings housings on these bearings will always be resistant!