Galley, Barbeque Mower is 5-6 yrs old and no bearing failures to date. High Back Reclining Helm Seat, Cabin and I suspect washdown water infiltration, but it's not been a problem previously. Bilge Pumps, Shop First, let's look at a diagram of a traditional pillow block bearing: The "seal" of the sealed bearing is referred to in the diagram as a "special rubber seal", and this usually has a "shield" around the outside of the bearing, protecting . Pumps, Marine Pump Replacement We had several bearing failures in a relatively short time due to lack of lubrication. Deals, Paint & Maintenance Covers, Boat Cover Insurance, Boat Under-lubrication causes early failure. The disadvantage of sealed bearing is that it can melt at higher temperatures as it is made of plastic and rubber. & Well, it's like this, Toro has superior spindles, end of discussion, and that's not just about zerk v/s sealed. Telescopes, Covers and I would think that the need one would have for sealed bearings would be limited to extremely wet or washdown environments. & Live Bait introduced the RD Type (Light Contact) Sealed Ball bearings for exactly that purpose. An example of an SKF number would be 6318ZZN-C3. Anchor Box Anchors, Fishing Rod & Reel In general, I would agree-and do-, that greaseable replacement parts are superior if one intends to keep grease in the applicable part. Maintenance, Fiberglass & Epoxy For exampleA larger bearing (40mm bore / 80mm od) can handle up to 5,600 rpm sealed, while a smaller (10mm bore / 30 mm od) can handle up to 17,000 rpm sealed. Storage On the other hand, shield bearings have no contact with the inner ring. Hitches, & So if grease zerts are used then the grease gets pumped into the windings. In conclusion, sealed bearings are better as it requires less maintenance and is overall better. & Circuit There was a time when the greasable Moog ones had some quality issues that involved the rubber piece failing and allowing dirt to enter the bearing area. Savers, Boat Trailer Guides & They are definitely not meant to be greased. Dec 24, 2009. So they are suitable to be used underwater. "I swear by my life and my love of it that I will never live for the sake of another man, nor ask another man to live for mine. It has metallic shields on both sides. These bearings are not re-greasable which saves from the need to re-grease but limits the overall bearing life. JavaScript is disabled. It also enables you to purge the old grease when switching lubricant brands or types. Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Inflatable Mounting, maintenance, and dismounting. Blocks, Marine Biggest problem on greasable . However, according to Zerger, it is important to note that, in harsher washdown applications. Furniture, Boat Seat Pedestals & Holders, Cabin Accessories & You can regrease a shielded bearing, but you should not be regreasing a sealed bearing. Each system requires vastly different internal plumbing and external equipment. Tackle Boxes, Fishing Bait & In this discussion a lot is said about the grease, but we have to look also at the motor construction. Handles, Life Jackets & Advantage: Dollies, SportsStuff Great Big They also feature patented duo-cone seals to keep the oil sealed . Fenders, Boat Trailer Biminis, Paint and Lucas Oil X-Tra is a 14-ounce, heavy-duty wheel bearing grease that comes with an affordable price tag. Heat is another factor to consider when choosing between sealed or shielded bearings. Sealed = triple lip seal, harder rubber, squared shoulder facing center cross, distinct machined sealing surface . The SKF system utilizes the same categories but lists them in a different order and identification method: bearing type, duty rating, bore diameter, shields or seals, snap ring groove, cage type, tolerance and radial clearance. What Does it Mean to Create a Meaningful E-Commerce Solution for Industrial Companies? The seal not only locks out debris but also keeps the lubricants trapped inside. Helm Seats, Shop GW211PP17. I took the hub caps off and installed a grease zerk on each one. Login, Boats Accessories, PWC Parts & My feeling is all your doing is pushing out the seals. For a better experience, please enable JavaScript in your browser before proceeding. Tops, Bimini Top It's recommended to avoid adding a grease fitting or adding grease into the bearings. We've had shops in the past that would install grease fittings on motors with sealed bearings. These two are essential parts of deep groove bearings. They are more vigorous in resisting damage from solid airborne pollutants small flying stones, for example. Waxes, Boat Cleaning Parts, Wash Down Not had any more go out, but some are getting kinda loose. Ball Joints: Greasable And Sealed . Steel housings are far stronger than cast, and anything is stronger than cheap Chinese. Communication, Auto Pilot How to Tell the DifferenceThere is a difference between shielded and sealed bearings. Tapered roller axle bearings are sealed with typical axle grease for lubrication, and must be pressed on or off the axle shaft. Yes, you definite want to lube the gimbal bearing with gimbal bearing grease. Lubricating a bearing once per week or once per month may seem like a sensible thing to do. ACCOUNT, Find Tops, Other Now a question arises which is the best bearing? Products, Carbon Monoxide & Shields are no point of contact between the bearing inner ring and the shield bore. Smoke I recently started a blog about welding gear.I am also a DIY welding enthusiast because it is affordable for any household work. $278 skins worth of sealed wheel bearing. SKF bought one of the main players a couple of years ago. Hardware, Boat Trailer Rails, Marine Tools & Tool However, non-contact enclosures generally provide less protection against contamination, as compared to contact seals. If you're looking for the knowledge and expertise you need to select the best parts for your application and environment, contact Tim Zerger, IBT's Bearing and Power Transmission Director, or give us a call at 913-677-3151 today! Your email address will not be published. Pushing Material, Combat Key Challenges in the Food Industry with Plastic Modular Belting, 7 Different Types of Seals for Industrial Applications. My Freightliner uses sealed u-joints. Alswagg said: Bravo gimble bearings are now sealed. & Developed from the racing industry, it was designed to create less contact between the rubber lip of the seal and the inner ring, which reduces friction and heat. between 1000-1800 psi could potentially fold the lip of the seal and allow water to get into the bearings. Deals, Electronics Really depends on the customer. Hoyt hunter said: The bearings are what is considered a a sealed bearing no difference than on a car wheel bearing. I have a different customer that uses an oil mist on some fan bearings and it makes a huge mess. Finally the grease found its way to the windings. If the housing calls for seals on each end and has a grease fitting, then you would use open bearings. Covers, Boat Seat Ball Joint Engineering: Greasable And Sealed . Guide, Boat These bearings have limited life spans and require replacement upon any signs of issues. Mistake 1 - Lubricating Is Based on Time instead of Condition. They do so by inhibiting contaminants or impurities from reaching internal regions. In general, a "bearing" facilitates movement between two parts while reducing friction. Battery Charger, Marine Audio & Check out ShopIBT.com to find the right seals for your needs! According to Tim Zerger, IBTs Bearings & PT Director, there are a few key questions you can ask yourself to help you determine whether a seal or a shield could better extend the life of your bearing: First, the environment in which your bearings operate in can help you identify potential contaminants so that you can then select your bearings accordingly. yes. Tapered bearings are mounted pairs . This seal is a one piece shroud cover with three molded contact se. Bearing life in 1800 rpm motors seems to average between 15 and 20 years, with the number of problems increasing after 12 years. That isif the bearing is not protected or covered. I'm not sure how many bales this baler has made, but there are signs of wear throughout the baler. The reason is with roller bearings like Toro you get a better product because when you grease the bearings it pushes out the old grease and moisture from the bearings. Shielded Bearings Vs Sealed Ball BearingsTo combat the contamination of a bearing by moisture and dirt bearing manufacturers have designed shields and seals to keep the bearing clean from Sealed vs. Shielded Bearings - Practical Machinist - LargestSep 9, 2012 The bearings are inside the bell housings, where they are protected from direct . This article mainly shares the characteristics, differences and corresponding uses of 14 common types of bearings. If you do use the greasable bearings, and suspect the seals are blown out, the only recourse is to pour the grease to them regularly to try to keep dirt and water flushed out. Vinyl, Floating Boat Hardware, Marine Double sealed bearings are preferable when bearing arrangements carry the load capacity of a single row bearing. Toro has greasable spindles and the Lazer's are sealed. Switches, Shore Power & AC #2. Tackle Boxes, Fishing Bait & They've all been laid off and now work as consultants. For a better experience, please enable JavaScript in your browser before proceeding. Parts, Rule 1500 GPH Automatic Until now, we have come to know enough about sealed bearings and shield bearings. & Sonar, Trolling Sealed spherical roller bearings are available in two variants, one for normal temperatures up to 110 C and one for high temperature applications up to 180 C. Systems, Marine Plumbing Hardware, Boat Cabin Greaseable = single lip seal, somewhat soft rubber, rounded shoulder facing center cross, indistinct sealing area on bearing journal. Bearing and motor manufacturers have given various reasons as to why grease fittings are installed on bearings and motors that have sealed bearings, such as: "All motors go down the same assembly line, and it is just easier to put the fittings on every motor that comes down the line." It means that less oil is spilt. The deck has a total of 12 grease fittings. So a better way to decide to choose between them is to determine where you use the bearing and where you are driving. This could wash out the grease or cause the roller or balls to skid, creating heat and infusing the metal surfaces together. However, some hybrid bearings are available with one side metal and rubber on another side. The motors are 1800 rpm, mounted vertically, driving a fan via belts. However, it is safe to say that sealed bearings are better than greasable bearings as they come pre-greased from the factory by 25-35%, which prevents the need to do the frequent greasing. Motor lubrication is part of their job. Hardware, Marine Never gave me an answer though. Tables, Minn Kota I called baldor about this myself, many years ago . I think that wouldn't be good for an industrial machine. Pumps, Marine Pump Replacement Biminis, RV & Trailer Transom On the contrary, everything comes with pros and cons. So for anyone who wants to buy the Volvo part, they are infact selling a new . Kits, Boat Trailer There have been post in this forum about sealed bearing failing in spindles on some brand. The removal of the shield is impossible. Axles, Boat Trailer Tie Bearings have been the cornerstone of IBT Industrial Solutions since the company was founded in 1949. Most of my clients (who tend to be small to medium sized operations) have improperly lubricated enough motor bearings to know that it isn't as easy as you'd think. Instruments, VHF Radios & Yes, I have seen non-greasable motors with zerks installed, that usually have a pile of grease around it. Ropes, Boat Messages. I have a JD 702 10wheel rake, which means 10 bearings to grease. One thing I noticed, other than the obvious sealed vs greasable, was the seal on the bearing cups. We have two units Bravo 1 and a Bravo 2 drive that have over 1000 hrs on the sealed bearing. When this same technology is applied to load-bearing ball joints, or used in commercial or fleet applications, service life can be compromised. The shield is a metallic disc, whereas the seal is inserted into a minor groove. Terms of Service. Washdown Clamp-On Collar Ball Bearings. Accessories, Marine Electrical & Bilge Pump, Tires, Rims, & Hub I bought a Toro because of the greasable roller bearings on the mower deck after much research. RZ-non-contact rubber cover seal. The majority or the ball bearings in the spindles, and most of the belt idlers is a 6203 2 RS bearing 5/8" X 1 1/2". Honda 5hp Outboard, Boat Maintenance, Pumps and Follow me on. With ZZ bearings, bearings can work for a lifetime because it protects them from dust and outside pollutants to go inside the path. Sealed bearing effective as an oil seal? "Their electric motors have no purge port because the design has an internal cavity that will contain all the grease expected to be expelled for the expected motor life.". Guilty. Accessories, Boat Lift Canopy Harware, Marine Nuts, Bolts, & Finally, remember that there is a difference between shielded and sealed bearings. Forums, Find We've really not had problems with them, but last month two (of four) showed bad bearings, and one is noticeably noisy (but not bad yet). Bill of materials. They are designed . OIL!!!! They have different additives. That prompted us to start/re-start lubing motor bearings. You must know what it is that you are aiming at. The manufacturer may have designed the bearing to purge through the fill path. Anything smaller than 5 HP automatically has sealed bearings in it. Answer (1 of 5): That's an excellent question. It may not display this or other websites correctly. There are many all-purpose greases for reliable lubrication of conveyor bearings. Cushions, Lexington However, according to CPS, ZZ is better than 2rs as it makes zero contact with the inner ring and provides excellent sealing. Familiarize yourself with sealed and non-sealed bearings . Disadvantages: large sealing gap (generally above 0.4mm) and low dust resistance. Lighting, Marine Teak This is a TEFC motor for which we definitely have to change out with another type if we want to grease them and extend bearing life. For example, shielded bearings have a gap that can allow finer contaminants or water from washdown applications to enter the bearing and get into the raceways. I don't say that like muffler bearings or tail light antennas, just be sure to use the correct grease. The selection of a shield or a seal largely depends upon certain factors like temperature and environment. Shielded is sort of a compromise in the middle bewteen the extremes of sealed and open. Aug 10, 2011 cape cod mass, cape coral fl 1999 Powerquest legend 260 sx 502 mag Copyright 2019 IBOATS. I would stay away from lithium based greases on electric motors, i see shortened bearing life on that combo. Yes, sealed bearings are waterproof and dustproof. That isif the bearing is not protected or covered. We and our partners use cookies to Store and/or access information on a device. Seats, Fishing Boat Gw211pp17, 1-1/2" square bore heavy duty disc harrow bearings are made with triple lip seals to protect from corrosive environments. Is that why you're correcting my terminology? Note: if you proceed, you will no longer be following, 2021 Association of Asset Management Professionals Inc.   . Lights, Boat Trailer & Sonar, Trolling Re: Greasable vs non-greasable gimbal bearing. The spindle bearings on my GT mower deck are greasable and are fairly large tapered roller bearings. If not, you probably never will have one. As the world's third largest bearing manufacturer, we have over 68 plants worldwide and 100 years of premium . I have my opinions, but figure that some of you probably have better informed opinions (than mine) and wondered what your thinking is on this question. I usually vote for sealed bearings. We have been having this problem with some of our VFD driven motors but are not sure if lack of grease was a factor. Accessories, Boat Lift Canopy decided that more motors were failing from overgreasing than lack of grease. However, according to Zerger, it is important to note that, in harsher washdown applications, high water pressure between 1000-1800 psi could potentially fold the lip of the seal and allow water to get into the bearings. Developed from the racing industry, it was designed to create less contact between the rubber lip of the seal and the inner ring, which reduces friction and heat. Deals, Pumps & Plumbing They are mounted under the ovens, with the non-drive end up. Parts, Wash Down Rollers, Boat Trailer Platforms, Slide Winches, Boat Motor Supports & Hitches, & Boat Gel Coat - Spectrum Color, Pumps and For GPF=2 the estimated life is the same, whereas a grease with GPF=4 is not recommended, due to a shorter life. I have two customers who use vibes each month to determine when to grease motors. Use environment: motor, etc. If housing has no place for seals and a grease fitting, then you would use bearings that are sealed on one side. It seems that every paper you read about this issue talks about the shaft current having to overcome the insulating properties of the grease before it can discharge. Sealed bearings have lubrication injected during the manufacturing process and are then sealed off. Contact ones offer better protection but lack speed proficiency, whereas the non-contact ones have higher speed capabilities, and their protection levels are superior to shields. Helm Seats, Shop A forum community dedicated to lawn care and landscaping professionals and enthusiasts. Wow, I think your going to open a can of worms here. Finally, you'll never receive email notifications about content they create or likes they designate for your content. Parts, Boat Tubing & Instruments, VHF Radios & Socialism is people pretending to work while the government pretends to pay them. U can easily see if your bearings have lube and spot problems sooner. "If there is not a purge path plug, should we assume that it is a sealed bearing?". A forum community dedicated to hay, forage and silage owners and enthusiasts. I use Mobil 1 grease. Their primary purpose is to safeguard and prolong bearing life. Financing, Iboats Deals, Paint & Maintenance In my case, most of my customer's maintenance departments can not handle the complexity of multiple machines, multiple greases, and varying greasing intervals. All, Anchor & Howdy, You'll get varying opinions but consider front wheel drive cars and other 4x4 (front) vehicle wheel bearings are NON-greaseable and ALL 1/2T and 3/4T trucks with semi-floating rear axles have non grease-able "permanently lubricated" rear wheel bearings . Sealed Bearings. Combos, Fishing Tools & Come join the discussion about tractors, machinery, harvesting, soils, pests, ranching, reviews, accessories, classifieds, and more! & Live Bait introduced the RD Type ( Light contact ) sealed bearings... Single row bearing we have two customers who use vibes each month to determine where you use the bearing purge. If lack of lubrication savers, Boat Seat Ball Joint Engineering: greasable vs non-greasable gimbal with. Oil mist on some fan bearings and it makes a huge mess may have designed bearing... Definitely not meant to be greased deals, pumps and Follow me on care and landscaping and... And must be pressed on or off the axle shaft about sealed bearings have lubrication injected during the process... Sealed bearing to open a can of worms here and no bearing failures in relatively! About welding gear.I am also a DIY welding enthusiast because it protects them from dust outside. Shielded bearings to know enough about sealed bearings reducing friction Tell the DifferenceThere is a sealed bearing is not or... Mounting, Maintenance, and dismounting Rule 1500 GPH Automatic Until now, we have been the cornerstone of Industrial. Lube and spot problems sooner on or off the axle shaft rubber, squared shoulder facing center cross distinct! Savers, Boat Cleaning parts, Rule 1500 GPH Automatic Until now, we have come know... ; bearing & quot ; facilitates movement between two parts while reducing friction compromise... Based on time instead of Condition the deck has a grease zerk on each one come to know about... Life can be compromised are then sealed off Dollies, SportsStuff Great Big they feature. 5-6 yrs old and no bearing failures in a relatively short time due to of! Right seals for your needs less Maintenance and is overall better facilitates movement between two parts while reducing.. Cover Insurance, Boat Trailer Tie bearings have lube and spot problems sooner care... Two parts while reducing friction affordable for any household work not had any more go out, but it not! Are many all-purpose greases for reliable lubrication of conveyor bearings inner ring and shield... Hub caps off and now work as consultants took the hub caps and. Feeling is all your doing is pushing out the grease gets pumped into the bearings 12 grease.... Motors but are not sure if lack of grease was a factor best bearing? `` but... ): that & # x27 ; s third largest bearing manufacturer, we have two units 1. Longer be following, 2021 Association of Asset Management Professionals Inc. & nbsp & nbsp mist on some brand zerk! It Mean to Create a Meaningful E-Commerce Solution for Industrial applications problems after! Isif the bearing inner ring and the Lazer 's are sealed on one side metal and.! Contact se out, but it 's not been a problem previously, differences corresponding... There are many all-purpose greases for reliable lubrication sealed bearings vs greasable bearings conveyor bearings Store and/or access information on device... Auto Pilot How to Tell the DifferenceThere is a sealed bearing non-greasable gimbal bearing with bearing! Answer though, but it 's not been a problem previously we assume that it can melt at temperatures. Duo-Cone seals to keep the oil sealed, we have come to know enough about sealed bearings in.. To safeguard and prolong bearing life 2021 Association of Asset Management Professionals &... 5-6 yrs old and no bearing failures in a relatively short time due to of... Myself, many years ago out debris but also keeps the lubricants trapped inside isif the bearing is protected... Plastic and rubber on another side decide to choose between them is to determine to! And where you use the bearing cups ): that & # x27 ; s third bearing... 5-6 yrs old and no bearing sealed bearings vs greasable bearings to date, SportsStuff Great they! Aug 10, 2011 cape cod mass, cape coral fl 1999 Powerquest legend 260 502... Lazer 's are sealed this article mainly shares the characteristics, differences and uses. Relatively short time due to lack of grease was a factor your.! Copyright 2019 IBOATS # x27 ; s an excellent question probably never have! Through the fill path about welding gear.I am also a DIY welding enthusiast because it protects from! When choosing between sealed or shielded bearings life can be compromised and no bearing failures to date:. Gph Automatic Until now, we have over 68 plants worldwide and 100 years of premium,. Number would be 6318ZZN-C3 technology is applied to load-bearing Ball joints, or used commercial. Seems to average between 15 and 20 years, with the non-drive up. You will no longer be following, 2021 Association of Asset Management Professionals Inc. & nbsp & nbsp would 6318ZZN-C3... Factors like temperature and environment be compromised that would n't be good for an machine... Vs non-greasable gimbal bearing with gimbal bearing Copyright 2019 IBOATS of bearings problem with some of our VFD motors... Big they also feature patented duo-cone seals to keep the oil sealed Replacement had. S third largest bearing manufacturer, we have two units Bravo 1 and a Bravo 2 that... Material, Combat Key Challenges in the Food Industry with plastic Modular Belting 7. Bearings have limited life spans and require Replacement upon any signs of issues or adding grease into the are! Be greased better experience, please enable JavaScript in your browser before.! Trolling Re: greasable and are fairly large tapered roller bearings steel are., i see shortened bearing life, Carbon Monoxide & Shields are no point of contact the! Time due to lack of lubrication is applied to load-bearing Ball joints, or used in commercial or fleet,... Grease found its way to the windings took the hub caps off now... Rake, which means 10 bearings sealed bearings vs greasable bearings grease motors, i think your going to open a can worms! Axle grease for lubrication, and dismounting under the ovens, with the number of increasing! Conclusion, sealed bearings are better as it requires less Maintenance and is overall better sort of a shield a... That have over 1000 hrs on the bearing cups ( Light contact sealed. And landscaping Professionals and enthusiasts stones, for example going to open a can worms! Early failure JavaScript in your browser before proceeding yes, you definite want to lube the bearing. Can of worms here or covered through the fill path your content, Barbeque Mower is yrs. Seal not only locks out debris but also keeps the lubricants trapped inside 2011 cape cod mass, cape fl! Are used then the grease or cause the roller or balls to skid, creating heat and infusing metal... Never receive email notifications about content they Create or likes they designate for your needs cornerstone... That have over 1000 hrs on the other hand, shield bearings have been having this problem with some our... Have no contact with the inner ring use cookies to Store and/or access information on a car bearing! We had several bearing failures to date have designed the bearing inner ring, Bimini Top it & x27., pumps and Follow me on stones, for example the motors are rpm! So for anyone who wants to buy the Volvo part, they are more vigorous in resisting damage from airborne... Think your going to open a can of worms here and open mainly shares the characteristics differences. Can work for a better experience, please enable JavaScript in your browser before proceeding of the players. Any more go out, but it 's not been a problem.!, creating heat and infusing the metal surfaces together avoid adding a grease fitting adding., SportsStuff Great Big they also feature patented duo-cone seals to keep the oil.. Of the main players a couple of years ago applications, service life can be compromised Modular Belting, different! To date going to open a can of worms here customer that uses an mist! 2011 cape cod mass, cape coral fl 1999 Powerquest legend 260 502!? `` third largest bearing manufacturer, we have over 68 plants worldwide and 100 years of premium a of. But it 's not been a problem previously 1800 rpm, mounted vertically, a! For any household work away from lithium Based greases on electric motors, i think your going to a. Gimble bearings are not re-greasable which saves from the need to re-grease but limits the overall bearing on! Types of seals for your content are not sure if lack of was... Car wheel bearing to Create a Meaningful E-Commerce Solution for Industrial applications 12 grease on. Ball bearings for exactly that purpose in conclusion, sealed bearings and bearings! The lubricants trapped inside are preferable when bearing arrangements carry the load capacity of a shield a... And anything is stronger than cast, and dismounting of the seal on other! Mower is 5-6 yrs old and no bearing failures to date they so... Types of seals for Industrial Companies be compromised bearing failing in spindles on some fan bearings and it makes huge. Allow water to get into the bearings stones, for example bearings in it Boat Seat Ball Joint Engineering greasable! Re-Greasable which saves from the need to re-grease but limits the overall bearing life 1800... Have designed the bearing inner ring the need to re-grease but limits the overall bearing life 1800! And sealed uses an oil mist on some brand to pay them of. Shops in the middle bewteen the extremes of sealed bearing? `` disadvantage of sealed bearing ``! Cause the roller or balls to skid, creating heat and infusing metal! Right seals for Industrial applications life Jackets & Advantage: Dollies, SportsStuff Great they!