![]() ![]() They keep 2-3 PSI positive pressure on the grease in the hub, if loaded properly, which prevents water intrusion when you back a warm hub into cold water and the grease within contracts.įor any trailer that will stay out of the water, I prefer EZ Lube. I believe bearing buddies are the best system for boat trailers, if you ramp launch. In order to provide the correct Bearing Buddy, I'd need to know the outer wheel bearing number of your hub and the hub bore inside diameter. If you have standard spindles without the grease fitting, you might be able to use a Bearing Buddy, such as part # BB1980A-SS. Using double-lip grease seals make blowing out the seal less likely, but it's still possible if the hub is aggressively overfilled. This can also allow water to infiltrate the hub, which can make the remaining grease less effective over time. Having EZ Lube spindles can be handy, but you'll want to avoid overfilling the hub with grease, as it can cause the grease seals in the back of the hub to blow out and allow grease to escape out the back of the hub, and get all over everything. For an EZ Lube hub, the grease cap would have a removable plug to make the grease fitting easy to access without needing to remove the grease cap. The only difference between an EZ Lube hub and a non-EZ Lube Hub would be the grease cap. ![]() This allows grease to be added to the trailer hubs, but the bearings would still need to be inspected and repacked before installation. ![]() ![]() Some trailers are equipped with EZ Lube spindles, which have a grease fitting or zerk in the end of the spindle, and a small hole in the spindle that lets grease enter the interior of the hub and reach the bearings. Mackay has quality control systems in its factory and specialised equipment for injecting grease into the bearing & cavity of the hub.Hi - What exactly is meant by Easy-Lube hubs, please? Do the wheel bearings have grease fittings? No grease? Thank you. Mackay uses the highest quality bearings, and a high lithium, high temperature blue marine grease.About 3 years ago, Mackay conducted a research project in conjunction with Monash University, which resulted in a more scientific approach to bearing quality. Mackay trailers are built in a quality controlled environment, with quality components and trailers are backed up by a proven warranty. Mackay uses the highest quality seals in the industry.Įnsure your trailer is built with the best quality components. Use double lip marine grease seals for better protection against water ingress. Also ensure that you have the correct bearings, and that these are well seated in the hub. Use the correct grease with your bearings this should be high temperature marine grease, ideally lithium based, which will not degrade with water.Ĭarry a spare set of bearings with you and better still a spare hub with bearings in it – to make any changeover very easy. If they are ‘overheating’ then if prepared, attend to them yourself, or head to the nearest garage/ workshop for some assistance. They should not feel any hotter than a cup of coffee. After a long trip to the ramp, your bearings & grease will have heated up – but once the bearings are submerged, the cool temperature will cause the grease to contract and ‘suck in’ water into the bearing cavity.įeel your hubs for excess heat when travelling. Wait for the bearings to cool off before submerging the trailer in water. All Mackay trailers are supplied with high quality bearing buddies or covers. You’re only inviting water in, and major problems down the line. So not submerge the bearings of the trailer in the water, without a bearing cover of sorts. Covers can and do fall off however they should be replaced immediately. How deep you go is also governed by how steep or shallow the ramp is.Įnsure your bearings have a cap, cover or bearing buddy. On a single axle trailer, aim for somewhere between the axle and top of the guards and with tandems, do not submerge below the front axle line. Mackay trailer designs supports the launch and retrieval of your boat without deep submerging of the trailer. Try and avoid submerging your bearings (and trailer) too deep in the water if you can help it. Repack the bearing with grease if required, but never overfill the cavity or bearing buddy. Milky grease is a sign that it has been compromised by water. Deterioration can happen quickly and often results in problems occurring at the worst possible time.Ĭheck the grease levels yourself, either by removing the cap or bearing buddy, or looking through the clear lens of the Durahubs (that Mackay use). Even if your trailer is not being used, condensation of air occurs in the bearing cavity and can cause rust to commence. Get your bearings serviced regularly – at least once per 6 months, and definitely before a major trip. Mackay Trailers provides 10 tips on how to avoid bearing failure. The number ONE reason for boat trailer nightmares is Bearing Failure? ![]()
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