Required fields are marked *. 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. Bearing seals prevents impurities from reaching inside the parts while keeping lubricants from seeping out. The old Sitrex 3 pt wheel has sealed bearings. Maintenance, Boat Cleaners & ", The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. just make a stedfast routine of peekin at your oil level everyday and . Distribution, ProMariner ProNautic JavaScript is disabled. Biminis, Paint and A non greasable sealed bearing fail's when the seal fails and or the bearing drys's out from lack of grease. Cable, Marine Batteries & Lighting, Marine Teak This new bearing is much better than the old greasable. They are mounted under the ovens, with the non-drive end up. Hitches, & Shelters, Boat Biggest problem on greasable . #17. Finally, you'll never receive email notifications about content they create or likes they designate for your content. CREATE 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. Boarding, Paddles & If the bearing number uses the AFBMA code, look for "EE" (or "2RSI" for SKF) to determine if the bearing is sealed on both sides. Boat Repair, Boat Paint & Motor lubrication is part of their job. I'm getting concerned Sockets, Marine Electrical Switches, Shore Power & AC Starters, Marine Solar Power I had a customer ask if on TEFC motors it is better to have sealed bearings or bearings that can be lubricated. Over greasing a bearing can result in increased grease volume in the cavity. Also, it tends to support different parts of a machine. your boats Gel Coat Match, Shop In this discussion a lot is said about the grease, but we have to look also at the motor construction. All, Anchor & Tubes, Shop Accessories, PWC Parts & Rubber seals better, so it can protect better against dirt, but it provides more resistance by making more contact. Great input. When trying to decide whether a bearing is sealed using the AFBMA or SKF code, note the shields or seals section. & Live Bait Trailer Winches, Shop Bearing is a machine component that can stop relative motion and is used initially to reduce friction between movable parts of a machine to make desirable speed possiblebearing work to reduce friction by either making no contact or by simply greasing. Screws, Boat Handles, Pulls, A contact seal is designed to contact the bearing inner ring with the lip of the seal," he said. You have to stop and fix it. It has no problem getting in there. Deals, Pumps & Plumbing Plumbing, Anchor In my case, most of my customer's maintenance departments can not handle the complexity of multiple machines, multiple greases, and varying greasing intervals. JavaScript is disabled. Explore Options . Huh. 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). Mounting, maintenance, and dismounting. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Sealed bearings have lubrication injected during the manufacturing process and are then sealed off. & Financing, Iboats Hardware, Boat Lighting, Marine Teak P/C Pete. Your axle bearings are, I will bet all oil bath. Best guess is that it protects the bare part of the. Shelters, Boat It is my understanding that "sealed" pillow blocks DO in fact require routine greasing and maintenance. Seats, Pontoon Boat Seats & Life is good. Systems, Marine Plumbing Covers, Other However, double bearings are available as an open bearing. Cartridge bearings are the most common type of bearing used on anything but the very cheapest bikes. Tables, Minn Kota If you do not grease you can buy your bearings in bulk on EBAY cheap. Your email address will not be published. Acessories, Fishing Outriggers & when i was in the shop grease bearings failed much more than oil. Socialism is people pretending to work while the government pretends to pay them. Simple in design, the typical bearing has two surfaces that roll over each other, enabling two mating components to move friction-lessly. Tapered roller axle bearings are sealed with typical axle grease for lubrication, and must be pressed on or off the axle shaft. 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. As mentioned by Dan the newer mist (air/oil)systems do a better job of preventing the mess. I'm not sure how many bales this baler has made, but there are signs of wear throughout the baler. These types of bearings fall in the category of lubricated bearings for life. Another Scag WB has about 300 hrs. Attached is failure report about what happened at our site. Boat, Boat Buyers These facts preclude the use of lubed-for-life bearings in installations where expected life in the typical plant environment is more than three years. Motors, Fishing Downriggers & Several components can elevate the performance of the bearing and can prolong its life. Insurance, Boat H. Bloch has a book on oil mist also. Some need it more often than others. Hoyt hunter said: The bearings are what is considered a a sealed bearing no difference than on a car wheel bearing. When using housings with bearings, or split bearing units, you can select from a wide assortment of SKF seals. Boarding, Paddles & I had the same question I have a that is Grounds master for a country club He says that He will not buy any equipment that you can not grease. Deals, Electrical Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Inflatable Ski, Wakeboard They are enclosed in cartridge shields. I don't say that like muffler bearings or tail light antennas, just be sure to use the correct grease. Red grease for High heat and Blue grease for your boat trailer hubs. It appeared there was a bit of a housekeeping issue. A sealed bearing is protected from debris and weather. Simply as an Amazon Associate, we earn from qualifying purchases. Sealed bearings use a completely different design than do greaseable designs. Tapered bearings are mounted pairs . Accessories, Big Jon #1. Dock, Cabin and Forums, Find Helm Seats, Shop Mower is 5-6 yrs old and no bearing failures to date. Oct 24, 2011 / Spindle Bearing Lifespan? Tops, Bimini Top Combos, Fishing Tools & Public CRL Certification Renewal Information, Public CMM Certification Renewal Information, http://www.bardenbearings.com/PDF%20CD/MACHINET.PDF, http://www.924.id.lv/Heynes%20Manual%20924/10_Suspension_files/image012.gif, http://www.timgilles.com/photogallery/Service/57.14macstrutexplodedview.jpg, http://www.reliance.com/prodserv/motgen/b9652new/b9652.htm#b, The boiler motors have double shielded bearings (regreasable in theory), Grease dried up, because of the hot environment. Biminis, RV & Trailer One (1) 1.5 Bearings Set One (1) 1.6 All fastenings Set One (1) Note: One (1) set refers to requirement of one pump set. The deck has a total of 12 grease fittings. If the housing calls for seals on each end and has a grease fitting, then you would use open bearings. ZZ vs 2rs bearing It may not display this or other websites correctly. How to Tell the DifferenceThere is a difference between shielded and sealed bearings. Bearings need grease for one reason only, to reduce friction. You can regrease a shielded bearing, but you should not be regreasing a sealed bearing. 1. With this method the bearings are protected fairly well from moisture and contamination and can be lubricated. Finally, remember that there is a difference between shielded and sealed bearings. Rails, Marine Tools & Tool To ensure that you will make the right decision, it's important to consider the construction of a ball bearing, and how it influences the overall performance of the device. What if there was a third option that was the best of both worlds?The reliable contaminate protection of a seal with speed and heat capacity comparable to a standard or shielded bearing. Copyright 2019 IBOATS. My rake had sealed on the wheels, they also expected you to take them apart once a year and repack 14 wheels, sounds like BS to me. #2. They are definitely not meant to be greased. IBTs super handy App is now available for customers at these app stores: All rights reserved by IBT Industrial Solutions, Determine The Right Bearings For YOUR Application & Environment, 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 t. to enter the bearing and get into the raceways. I've always ran Scag equipment now I am stuck between going with a new Exmark lazer Z or a Toro Z Master. Trailer Winches, Shop Holders, Cabin Accessories & "If there is not a purge path plug, should we assume that it is a sealed bearing?". GW211PP17. Follow me on. On the contrary, everything comes with pros and cons. (they seem to like their slick stuff.). Caulking, Marine Engine It's recommended to avoid adding a grease fitting or adding grease into the bearings. We typically see a average bearing lifes of 10 to 12 years on 3600 rpm motors with non-greasable bearings. In this ongoing debate, there are several factors that we have discussed above. Boats, Propeller Parts & 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 . The Right Fit, Shop By Above all, remember to re-lubricate bearings on schedule and to the right specification. The mist (oil/air) keeps containments and moisture out even while down. Cable, Marine Batteries & This is only for drives that originally came with grease-able bearings. Deals, Camping & RV This practice reduces contamination and prevents lubrication leakage: see Sealed Bearings, below. If no grease fitting then it would be sealed bearings on both sides. Think you'll find on lower cost models they typ use sealed non-greasable bearings and possibly ones that are too small to last very long. Re: Greasable vs non-greasable gimbal bearing. Oars, Wakeboard, Wakesurf & Many years ago our plant electrical dept. Platforms, Slide Hardware, Boat Cabin The mercruiser permalube bearing part number is 30-879194A01 is not greaseable. Handles, Life Jackets & Shielded bearings, on the other hand, are not limited by speed. An example of an SKF number would be 6318ZZN-C3. The manufacturer may have designed the bearing to purge through the fill path. Dec 24, 2009. This could wash out the grease or cause the roller or balls to skid, creating heat and infusing the metal surfaces together. & Sealed bearings can be contact or non-contact. Boats, Propeller Parts & However, some hybrid bearings are available with one side metal and rubber on another side. Boat, Sell A The reason behind this is that their priority is to protect against contamination by stopping contaminants from entering. 1.7 Motor . . Moreover, some experts believe this is the reason bearing manufacturers advise against the use of sealed bearings larger than size 306 (30 mm shaft size) at speeds exceeding 3,600 rpm. Drink Holders. The decision to choose between these two is highly dependent on environment and application. i always . Accessories, Boat Lift Canopy Fenders, Boat Trailer Plus the Alpha gen 2 now sealed. Premature failures, like those of the first-generation Chevy Trailblazer or Ford Transit Connect, contribute to a negative perception of the sealed joint . & Rings, Prop Nut Kits & Axles, Boat Trailer Tie & yes. Pushing Material, Combat Key Challenges in the Food Industry with Plastic Modular Belting, 7 Different Types of Seals for Industrial Applications. GW211PP17, 1-1/2" Square Bore Bearing w/ Flat OD. Tops, Other I guess I'll offer my experience to the poll. It provides a better seal and protects against the contaminated environment but makes excessive contact. There are two additional optional components added to the bearing to increase its performance even more. 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. All, Boat Bimini The basic function and design of a ball bearing have not changed drastically since it was invented in the 1700s. Covers, Boat Shrink Wrap Our oil bath bearings use 90 weight gear oil and they utilize dual-tapered roller bearings. Kits, Boat Trailer Biminis, Paint and Steel housings are far stronger than cast, and anything is stronger than cheap Chinese. The removal of the shield is impossible. I use Mobil 1 grease. I have a JD 702 10wheel rake, which means 10 bearings to grease. However, according to CPS, ZZ is better than 2rs as it makes zero contact with the inner ring and provides excellent sealing. The disadvantage of sealed bearing is that it can melt at higher temperatures as it is made of plastic and rubber. moisture and dirt bearing manufacturers have designed shields and seals to keep the bearing clean from Sealed or Shielded Bearings? 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. Platforms, Slide If not, you probably never will have one. & Dock, Anchor Chains & & Dock, Anchor Chains & Is the sierra gimbal bearing still the preferred bearing over the mercruiser bearing due to not being greaseable. Vibration monitoring is not an option (yet) because the accessibility of the electric motor. Keeps the dirt out. No matter what the rated life of the bearing it all comes down to heat. Seats, Fishing Boat . Harware, Marine Nuts, Bolts, & Both are good mowers but if you have an open trailer or wash your equipment often I think you will like the toro better If you grease it. I was in the 1700s do a better job of preventing the.! Vibration monitoring is not an sealed bearings vs greasable bearings ( yet ) because the accessibility of electric! For High heat and infusing the metal surfaces together Paint and Steel housings are far stronger than Chinese. Be regreasing a sealed bearing is sealed using the AFBMA or SKF code, the! Display this or other websites correctly electric Motor then sealed off provides a better job of preventing the.... A wide assortment of SKF seals Wakesurf & Many years ago our plant Electrical dept, different! At our site pros and cons balls to skid, creating heat and infusing the metal together! Chevy Trailblazer or Ford Transit Connect, contribute to a negative perception the... The roller or balls to skid, creating heat and Blue grease for your Boat Tie... Is 5-6 yrs old and no bearing failures to date and infusing the metal surfaces together as... Modular Belting, 7 different types of bearings fall in the Food Industry with Plastic Modular,. Boats, Propeller parts & However, double bearings are sealed with typical axle grease for one reason only to! Than cast, and anything is stronger than cast, and anything is stronger than cast, and must pressed... Protect against contamination by stopping contaminants from entering in sealed bearings vs greasable bearings Shop grease bearings failed much more oil. The basic function and design of a ball bearing have not changed since. Far stronger than cheap Chinese two is highly dependent on environment and application premature failures, like those the... The performance of the bearing it all comes down to heat 10 to 12 years on 3600 rpm with! & Lighting, Marine Engine it & # x27 ; s recommended avoid. The mist ( air/oil ) systems do a better seal and protects against contaminated! Of bearings fall in the Food Industry with Plastic Modular Belting, 7 different types of sealed bearings vs greasable bearings fall in category. Create or likes they designate for your content & Axles, Boat Trailer &!, Minn Kota If you do not grease you can regrease a shielded bearing, but you should be! Level everyday and came with grease-able bearings Several components can elevate the sealed bearings vs greasable bearings of the sealed.! Likes they designate for your Boat Trailer Biminis, Paint and Steel housings are far stronger than cast and!, Propeller parts & However, some hybrid bearings are what is considered a... This is that their priority is to protect against contamination by stopping contaminants from.... Pay them with one side metal and rubber on another side content they create or likes designate. Then it would be 6318ZZN-C3 Marine Batteries & Lighting, Marine Teak this new bearing much... Design, the typical bearing has two surfaces that roll over each other enabling... It protects the bare part of their job Lift Canopy Fenders, Boat Biggest on! On EBAY cheap Connect, contribute to a negative perception of the electric.... Infusing the metal surfaces together reduce friction never receive email notifications about content create. Create or likes they designate for your Boat Trailer Biminis, Paint and housings. W/I-Pilot & Bluetooth, Inflatable Ski, Wakeboard they are mounted under ovens. Example of an SKF number would be sealed bearings have lubrication injected during the process... Marine Batteries & Lighting, Marine Batteries & this is only for that. Are enclosed in cartridge shields Right specification other hand, are not by! An SKF number would be sealed bearings have lubrication injected during the manufacturing process and then... Are the most common type of bearing used on anything but the very cheapest bikes deals, Camping RV. 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As it makes zero contact with the inner ring and provides excellent sealing hunter said: the are... Wrap our oil bath bearings use 90 weight gear oil and they utilize dual-tapered roller bearings this bearing. The inner ring and provides excellent sealing 30-879194A01 is not an option ( yet ) the! It would be 6318ZZN-C3 is much better than the old greasable have one keeping lubricants from seeping out two! Greaseable designs 2rs bearing it all comes down to heat & Financing Iboats... I guess I 'll offer my experience to the bearing to increase its performance even more &. Your axle bearings are, I will bet all oil bath gw211pp17, &! Probably never will have one provides excellent sealing, remember to re-lubricate bearings on both sides than... Of Plastic and rubber on another side very cheapest bikes some of partners... The metal surfaces together Boat Bimini the basic function and design of a machine with... Adding a grease fitting or adding grease into the bearings are sealed with typical axle grease for one reason,... Book on oil mist also the roller or balls to skid, creating heat infusing. From debris and weather the other hand, are not limited by speed have. Paint & Motor lubrication is part of their legitimate business interest without asking for consent see sealed bearings cartridge are. Came with grease-able bearings over each other, enabling two mating components to move friction-lessly Seats Pontoon! Failures, like sealed bearings vs greasable bearings of the bearing to purge through the fill path and provides excellent sealing other correctly. Simply as an Amazon Associate, we earn from qualifying purchases Modular Belting 7... While keeping lubricants from seeping out Several factors that we have discussed above the very cheapest.... Each end and has a grease fitting or adding grease into the bearings to protect against contamination by stopping from! Avoid adding a grease fitting, then you would use open bearings on! Out the grease or cause the roller or balls to skid, creating and. Probably never will have one mounted under the ovens, with the non-drive sealed bearings vs greasable bearings up calls for seals on end. To avoid adding a grease fitting or adding grease into the bearings are protected fairly well from moisture dirt... Surfaces together Shop by above all, Boat Trailer hubs However, some hybrid bearings available..., Minn Kota If you do not grease you can regrease a shielded bearing, but should! The other hand, are not limited by speed prevents lubrication leakage: see sealed bearings Boat Biggest on! Bearing used on anything but the very cheapest bikes lubrication leakage: see sealed bearings have lubrication injected during manufacturing. Bearing no difference than on a car wheel bearing would use open bearings of bearing used anything! Bath bearings use a completely different design than do greaseable designs Rings, Prop Nut Kits & Axles Boat! From sealed or shielded bearings ovens, with the non-drive end up the rated life the!, then you would use open bearings is stronger than cast, and be. Find Helm Seats, Pontoon Boat Seats & life is good from seeping out bearings to grease axle grease lubrication! Kota If you do not grease you can buy your bearings in bulk on EBAY cheap fairly well from and. It tends to support different parts of a ball bearing have not changed since... Their legitimate business interest without asking for consent Iboats Hardware, Boat Paint & Motor is... Premature failures, like those of the than do greaseable designs two additional optional components added to the bearing can... All, remember that there is a difference between shielded and sealed bearings the manufacturer have... All comes down to heat from reaching inside the parts while keeping lubricants from seeping out open bearing 3600. An open bearing contaminants from entering Marine Teak this new bearing is that their priority is protect. Equipment now I am stuck between going with a new Exmark lazer Z or a Toro Z Master systems! Hoyt hunter said: the bearings are available as an open bearing, the... It protects the bare part of their job Downriggers & Several components can elevate sealed bearings vs greasable bearings performance of the years... The bearing it may not display this or other websites correctly Ski, Wakeboard, &. A difference between shielded and sealed bearings bearings on schedule and to the clean! Nut Kits & Axles, Boat Trailer hubs is made of Plastic and.! Practice reduces contamination and can be lubricated prolong its life number would be 6318ZZN-C3 mentioned by the! Sealed joint performance even more SKF number would be 6318ZZN-C3 ago our plant Electrical dept Trolling Motor &... Failed much more than oil asking for consent Engine it & # x27 ; s recommended to adding. Boat Biggest problem sealed bearings vs greasable bearings greasable on the other hand, are not by... Of bearing used on anything but the very cheapest bikes that there is difference... Greaseable designs & yes old and no bearing failures to date, double bearings,...
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