Which way does a grease seal go in?
When replacing a grease seal, the metal part of the seal will face towards the inside of the trailer and the rubber part of the seal will face toward the back side of the wheel. The air side of the seal is the flat side of the seal and faces out when it is installed in the hub.
What is the difference between an oil seal and a grease seal?
Oil seals – often called grease, fluid or dirt seals – close spaces between stationary and moving components in mechanical equipment, helping prevent lubricant escape. In precision bearings, oil seals help prevent lubricants from escaping the bearings or a specific area. …
How does a grease seal work?
A grease seal, often called an oil or dirt seal, is a type of seal utilized to retain grease in a case or housing. Grease seals close spaces between stationary and moving components in mechanical equipment, helping prevent lubricant escape.
How do grease seals work?
Are grease seals universal?
Available in a wide array of sizes, both inch and metric, most grease seals are interchangeable between manufacturers. Critical dimensions on a grease seal include the inside diameter or bore (the OD of the shaft the seal rides on), the outside diameter (often called the housing bore) and the width.
How does a hub seal work?
Wheel seals are designed to keep your wheel bearing lubricant within the wheel end, and keep all debris, dirt, and other contaminants out while on the road. They can be installed directly into the hub or onto the spindle with dedicated installation tools, dependent upon the seal.
What do you need to know about oil and grease seals?
For proper installation, the seal lip should point towards the medium being contained. Some oil seals and grease seals have a spring to help keep the lip in contact with the shaft. Oil and grease seals are used to retain or separate lubricants or fluids.
Where is the grease seal on a lip?
In a typical application, the grease seal is installed adjacent to a bearing, sealing in or sealing out, as necessary, the various liquids, gases or solids encountered by the particular mechanism. Oil and grease seals are available in numerous lip materials.
What causes grease to leak from a wheel seal?
Grease is leaking from the bearings The wheel seal is supposed to fit very tight in the wheel assembly and protects the wheel bearings from dirt, water, and other debris that can cause damage. Inside the wheel bearing is a tremendous amount of grease that keeps the bearings running smooth, cool and free.
Which is the correct way to install the oil seal?
Seals in the timing cover are retaining oil pressure in the cover. An example of this is the timing side crank oil feed seal. The points seal is meant to keep oil away from the contact breaker so it is installed reverse of the feed seal. Gearbox seals retain gear oil so to spring goes towards the inside of the gearbox.
How is a grease seal different from an oil seal?
Oil seals and grease seals have a single or double flexible lip that rubs against a shaft or housing to prevent lubricant leakage or the intrusion of water and dirt. Unitized seals are a two part seal, the inner portion stays fixed to the spindle and the outer portion rotates with the hub.
When to replace grease seals on a trailer?
Trailer Grease Seals Hub grease seals are available to help prevent water and dirt entering the hub and causing bearing failure. These should be inspected and replaced if signs of wear is noticed such excess grease build up on the inside of your hub. We offer double and triple lipped seals for all hubs.
Why do you need grease seals on your hubs?
Hub grease seals are available to help prevent water and dirt entering the hub and causing bearing failure. These should be inspected and replaced if signs of wear is noticed such excess grease build up on the inside of your hub. We offer double and triple lipped seals for all hubs.
What kind of grease seal for Inner Wheel?
Triple Lipped, Spring Loaded all rubber seal provides superior protection against dirt and water intrusion. 2-1/4″ lip ID x 3.38″ OD grease seal for most trailer axle wheel hubs with 1-3/4″ I.D. inner wheel bearing. Triple Lip, Spring Loaded all rubber seal provides superior protection against dirt and water intrusion.