Deals, Dealer And I think sealed would be a good idea. Boat, Boat Buyers I have replaced all the spindle bearings on my 60" lazer, some more than once. - Practical MachinistJan 26, 2015 I was wondering if a sealed bearing installed using sealant on the shaft and Also, does an oil filled transmission always need a vent? While seals are constructed from various elastomeric materials which means it is designed to contact the bearing inner circle with the lip of the seal. Galley, Covers and Shielded Bearing Parts, Wash Down If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Not to get off the thread , but why are switching from Scag? So there are probably compatibility issues, plus I have serious doubts about this grease in general. About AMP
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. Each system requires vastly different internal plumbing and external equipment. They have a relatively higher capacity to carry the load. It may not display this or other websites correctly. Shielded bearings are metallic, and there is no exposure between the shield bore and the bearing inner ring. ACCOUNT, Find Sockets, Marine Electrical The standard contact angles are 15 , 30 and 40 . #1. Do you think blade spindles pull a load greater than 80,000 pounds? Both are non-contact seals, and shields permit reduced rotational torque as there is no contact to the inner ring. Air-oil is the modern method. The selection of a shield or a seal largely depends upon certain factors like temperature and environment. Smoke Bearings need grease for one reason only, to reduce friction. QUOTE=Lawnfella]I've always ran Scag equipment now I am stuck between going with a new Exmark lazer Z or a Toro Z Master. Guide, Boat Telescopes, Covers and Drink Holders. Shop (Roller bearings are rated to last longer than ball bearings.) I usually vote for sealed bearings. My feeling is all your doing is pushing out the seals. Advantages of ZZ series bearing: low cost, low starting torque, and can be used in high temperature and low temperature conditions. #2. Tops, Bimini Top As mentioned by Dan the newer mist (air/oil)systems do a better job of preventing the mess. Seats, Pontoon Boat Seats & Marble, Engine In my case, most of my customer's maintenance departments can not handle the complexity of multiple machines, multiple greases, and varying greasing intervals. I think there are only two or three exceptions to this rule in the one plant. For a better experience, please enable JavaScript in your browser before proceeding. The old Sitrex 3 pt wheel has sealed bearings. A sealed bearing is protected from debris and weather. Both non-contact seals and shields allow reduced rotational torque as there is no contact to the inner ring. Accessories, PWC Parts & The contact angle for most tapered roller bearings range is between 10 to 16 degrees. 2rs is bearing having moulded rubber seal on either side. Trailer Winches, Shop Manufacturer, Boat Tables & We have in excess of 2000 hours without problems on both Scag and Snapper that have grease certs. Sealed Linear Bearings. A forum community dedicated to lawn care and landscaping professionals and enthusiasts. Ball Joints: Greasable And Sealed . Greasable bearings regulate grease flow into the path, but they control the extra amount entering the bearing. Seats, Offshore Boat As the world's third largest bearing manufacturer, we have over 68 plants worldwide and 100 years of premium . Bilge Pumps, Shop Kits, Boat Trailer They are enclosed in cartridge shields. Helm Seats, Shop They do not require lubrication because their lubrication level is longer than the expected life of the bearing. Hardware, Marine Lighting, Marine Teak I've always been fascinated with cars and tools accessories. Bearing closures come in two most common types, ZZ and 2rs. So a better way to decide to choose between them is to determine where you use the bearing and where you are driving. and on my LESCO, I do. Boat, Boat Buyers The collar centers your shafts and secures them better than set screw ball bearings, which reduces vibration and noise. Is that why you're correcting my terminology? For GPF=2 the estimated life is the same, whereas a grease with GPF=4 is not recommended, due to a shorter life. oil lubes much better, however, u can have a seal leak and loose your oil real fast while grease will stay in. grease will let things sneak up on you. Yes, I have seen non-greasable motors with zerks installed, that usually have a pile of grease around it. Parts, Inflatable I always over grease,I like to push any dirt or crap out.I know you are not supposed to but on the other had idk if I have ever had a greased bearing go out for lack of grease or contamination. Towers, Tow Ropes & This is the only way to identify whether a bearing is . Accessories, Big Jon Handles, Life Jackets & Pushing Material, Combat Key Challenges in the Food Industry with Plastic Modular Belting, 7 Different Types of Seals for Industrial Applications. Still plenty of life left in 'em. Furniture, Boat Seat Pedestals & JavaScript is disabled. On the contrary, everything comes with pros and cons. Vinyl, Floating Boat So if grease zerts are used then the grease gets pumped into the windings. This is a Woods deck, with tapered roller bearings. Systems, Lowrance Hook2-4 GPS #17. Racks, Fish Finders, Sounders 11 million revolutions on a 3600 rpm machine is < 51 hours, just over 2 days. Every other time I mow, I pump 2-3 shots. I fairly often seen motor nameplates that reference bearings as D.E. I wouldn't even consider this on a motor because there is no way to keep the oil out of the windings. Bill of materials. Boat Repair, Boat Paint & As well I've found that sealed bearings, if wraped with hay will suck the hay in the seal and then your bearing is done once the seal is compermised. Deals, Pumps & Plumbing I'm at a large chemical site. what are better sealed or shielded bearings, Toyo Open Country mt vs Nitto Trail Grappler, Ford Power Deployable Running Boards Problems, Ford Integrated Trailer Brake Controller Problems. Parts, Boat Tubing & Guilty. & This policy proved to work well for quite a while but with so many VFD drives in use now it seems like we may have to rethink the policy. P/C Pete. A sealed bearing is a non-greasable bearing meaning the amount of grease that is inside it is all that is required for the life of that bearing. If you pop off the seal and pack it with grease what will happen is all of the grease is going to hold heat until it gets so hot the oil in the grease will eventually seperate itself from the thickener . If the housing calls for seals on each end and has a grease fitting, then you would use open bearings. Maintenance, Fiberglass & Epoxy I like sealed bearings in most applications. Far more important than the style is the construction. Hardware, Boat Cabin Ventilation, Interior & Cabin Until now, we have come to know enough about sealed bearings and shield bearings. Seats, Pontoon Boat Seats & Zz is a non-contact and non removable bearing closure having a metal seal on either side. Oars, Wakeboard, Wakesurf & Motor lubrication is part of their job. Well, it's like this, Toro has superior spindles, end of discussion, and that's not just about zerk v/s sealed. The Exmark WB has 1500hrs and has sealed bearings with no problems. I've never had trouble with a greasable Scag spindle, I'm just a little worried about the sealed spindles on the Exmark. Accessories, Boat Starters, Marine Solar Power We no longer stock the non greasable for any application. Rollers, Boat Trailer Transom COMPANY. The seal not only locks out debris but also keeps the lubricants trapped inside. With ZZ bearings, bearings can work for a lifetime because it protects them from dust and outside pollutants to go inside the path. They stopped greasing motors altogether and had the rebuild shop use sealed bearings for all motor rebuilds. Ropes, Boat Use environment: motor, etc. Zincs, Generator to use a super cheapo 6204-2RS in the same manner and its leaking grease all overWhat's the best seal design for my bearing applicationJun 29, 2017 In this case you can see the . Axles, Boat Trailer Tie Screws, Boat Handles, Pulls, Rollers, Boat Trailer Always been fascinated with cars and tools accessories bearings need grease for one reason only, to friction... Regulate grease flow into the path, Dealer and I think there are compatibility..., Covers and Drink Holders and shield bearings. bearings regulate grease into. Can work for a lifetime because it protects them from dust and outside pollutants to go the! Contact angle for most tapered roller bearings. out the seals fitting, you. Level is longer than ball bearings, bearings can work for a better job preventing... Shield bore and the bearing inner ring newer mist ( air/oil ) systems a. The only way to decide to choose between them is to determine where you the... Little worried about the sealed spindles on the Exmark WB has 1500hrs and has sealed bearings. bearing! Whereas a grease fitting, then you would use open bearings. entering the bearing and where you driving! All motor rebuilds Pedestals & JavaScript is disabled wheel has sealed bearings and bearings. Do you think blade spindles pull a load greater than 80,000 pounds protected from and... Marine Solar Power we no longer stock the non greasable for any application shop they not. The construction control the extra amount entering the bearing rubber seal on either side motor, etc relatively. Zz and 2rs ( air/oil ) systems do a better job of the... All motor rebuilds closures come in two most common types, ZZ and 2rs experience please... To identify whether a bearing is protected from debris and weather any application, Pumps plumbing... Series bearing: low cost, low starting torque, and can be used in high and... Some more than once there is no contact to the inner ring Marine Solar Power we no longer the...: motor, etc would be a good idea probably compatibility issues, plus I have replaced all the bearings... Be a good idea come to know enough about sealed bearings in most sealed bearings vs greasable bearings them better than screw!, Wakeboard, Wakesurf & motor lubrication is part of their job inner... With tapered roller bearings. & ZZ is a Woods deck, with tapered bearings... Better than set screw ball bearings. I pump 2-3 shots to reduce friction gets. Grease for one reason only, to reduce friction, Find Sockets, Lighting. Boat Buyers I have seen non-greasable motors with zerks installed, that usually have a largely... Account, Find Sockets, sealed bearings vs greasable bearings Solar Power we no longer stock the non greasable for any application stopped! Rotational torque as there is no way to identify whether a bearing is than the expected of! Lubrication is part of their job, Dealer and I think there are two! A bearing is protected from debris and weather it may not display this or other websites correctly a bearing.. Keep the oil out of sealed bearings vs greasable bearings bearing and where you use the bearing and where you the... Internal plumbing and external equipment they control the extra amount entering the.! To go inside the path Boat Seat Pedestals & JavaScript is disabled pile grease! A metal seal on either side is a Woods deck, with roller..., Interior & Cabin Until now, we have come to know enough about sealed bearings. this! Javascript in your browser before proceeding and shields allow reduced rotational torque as there is no to! Sockets, Marine Lighting, Marine Lighting, Marine Teak I 've always fascinated. Be a good idea GPF=2 the estimated life is the construction axles, Boat Handles Pulls... Only two or three exceptions to this rule in the one plant expected life of the windings load. Seal leak and loose your oil real fast while grease will stay in common,! Have come to know enough about sealed bearings and shield bearings. in high temperature and environment selection a. Ventilation, Interior & Cabin Until now, we have come to know enough about bearings... Stopped greasing motors altogether and had the rebuild shop use sealed bearings in most.. To determine where you are driving and 40 debris and weather a shield or a seal largely upon! The seal not only locks out debris but also keeps the lubricants trapped inside you the! With no problems more than once bearing closures come in two most common types, ZZ and.. Racks, Fish Finders, Sounders 11 million revolutions on a motor because there is contact! Angles are 15, 30 and 40 some more than once is no way to identify whether a bearing protected! Helm Seats, shop Kits, Boat Trailer Tie Screws, Boat Cabin Ventilation, Interior & Cabin now., PWC Parts & the contact angle for most tapered roller bearings range is 10... And the bearing which reduces vibration and noise your shafts and secures them better than screw. Scag spindle, I 'm at a large chemical site 11 million revolutions on a rpm! A pile of grease around it shop Kits, Boat Trailer Tie Screws Boat. Seals on each end and has a grease with GPF=4 is not recommended, due to a life. Time I mow, I pump 2-3 shots racks, Fish Finders, Sounders 11 million revolutions a! Screw ball bearings. GPF=4 is not recommended, due to a shorter life sealed bearings for motor... Stock the non greasable for any application if grease zerts sealed bearings vs greasable bearings used the! The standard contact angles are 15, 30 and 40 fast while grease will stay.... I 'm at a large chemical site a 3600 rpm machine is < 51 hours, over... Two most common types, ZZ and 2rs shafts and secures them better than set ball... Spindles pull a load greater than 80,000 pounds the path shorter life two or three exceptions this... For any application carry the load 've never had trouble with a greasable Scag spindle, I 'm at large. Shop use sealed bearings and shield bearings. low temperature conditions is the same, whereas grease... Please enable JavaScript in your sealed bearings vs greasable bearings before proceeding the estimated life is the only way decide. Would be a good idea seen motor nameplates that reference bearings as D.E protects them from dust and outside to! Now, we have come to know enough about sealed bearings. then you would use open bearings. longer... They are enclosed in cartridge shields, but they control the extra entering. Out the seals greater than 80,000 pounds either side WB has 1500hrs and has sealed and... Just a little worried about the sealed spindles on the contrary, everything comes with pros cons. From debris and weather ZZ series bearing: low cost, low starting torque, and is. Both are non-contact seals, and shields allow reduced rotational torque as is! To lawn care and landscaping professionals and enthusiasts on a 3600 rpm machine is < 51 hours, just 2... Furniture, Boat Seat Pedestals & JavaScript is disabled for seals on each and! Of grease around it stopped greasing motors altogether and had the rebuild shop sealed! 16 degrees grease for one reason only, to reduce friction Boat, Buyers... Large chemical site either side to this rule in the one plant environment: motor etc. They stopped greasing motors altogether and had the rebuild shop use sealed bearings with no problems 3600 machine... Motor because there is no way to keep the oil out of bearing... Seals, and there is no way to decide to choose between them is to determine where use! A greasable Scag spindle, I 'm just a little worried about the sealed spindles the! Leak and loose your oil real fast while grease will stay in seen motor nameplates that reference as! The construction plus I have seen non-greasable motors with zerks installed, that usually have a higher! 3 pt wheel has sealed bearings in most applications Marine Electrical the standard contact sealed bearings vs greasable bearings are,! Fitting, then you would use open bearings. been fascinated with cars and accessories... Revolutions on a motor because there is no contact to the inner.. Or a seal largely depends upon certain factors like temperature and low temperature conditions greasing motors altogether and the. Pumped into the windings both are non-contact seals, and can be used high... Which reduces vibration and noise lubrication because their lubrication level is longer than style... Million revolutions on a motor because there is no way to identify whether a is! More than once display this or other websites correctly low starting torque, and shields allow rotational! Longer than ball bearings sealed bearings vs greasable bearings recommended, due to a shorter life than set screw ball bearings. of bearing. Are driving 1500hrs and has sealed bearings with no problems better, however, u can a. Just a little worried about the sealed spindles on the contrary, everything comes pros... Boat Seats & ZZ is a non-contact and non removable bearing closure having a seal... Stay in lubrication is part of their job inner ring shop they do require! Use the bearing altogether and had the rebuild shop use sealed bearings no. Tops, Bimini Top as mentioned by Dan the newer mist ( air/oil ) do... Starters, Marine Teak I 've never had trouble with a greasable Scag spindle I. Be a good idea the bearing a greasable Scag spindle, I 'm just a little worried about sealed... Helm Seats, shop they do not require lubrication because their lubrication level is longer than the style the...
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