Engineering folk might like this. Might interest some H55F users, hopefully it will fix mine.
Most might find it boring so I've attached a coloring sheet of a double cab you can print off color it.
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Remember don't eat the crayons and only draw on the paper.
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So in order to find different options for fixing my H55F leak, I started researching the different seal brands. NOK I believe is the OEM supplier. Could be wrong here as well.
The NOK seal was too tight with the speedi sleeve. The Harwal seemed to fit decent but has failed. There are some other brands I looked up that seem to fit, although I've never heard of them. I decided to try and find the SKF brand as I've heard good things about them. It appears they have a couple different avenues that might work for this application. I looked and researched WAY more that I wanted to know about seals. WAY too much.
Aktiebolaget Svenska Kullagerfabriken founded on 16 February 1907.
Sven Wingquist, inventor of the double-row self-aligning ball bearing, was one of the founding members and the first Managing Director.
1909 a subsidiary SKF started in US in 1909.
In 1990, SKF acquired CR Seals, Chicago Rawhide. CR Seals patented the "Perfect Oil Seal" in 1928. (insert
@Gun Runner 5 or
@cruiserdan age joke here).
That seal was made of leather. I didn't know the old seals were made of leather, however I never thought of it either...
anywho...new tech in radial seal design:
\The sealing lips of SKF radial shaft seals are manufactured from several materials and two different main designs. For detailed information, refer to the section
Sealing lip materials. There are two main sealing lip designs that differ in the execution of the sealing lip edge. The “conventional” sealing lip (
fig 2) has a straight edge,
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whereas the SKF WAVE lips (
fig 3) are moulded with a hydrodynamic feature that results in the lip taking a sinusoidal path on its counterface surface.
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SKF WAVE seals represent one of the most important developments in radial shaft seals. The sealing lip is moulded to a special form, producing a relative movement on the counterface, imparting hydrodynamic properties. SKF WAVE seals are suitable for rotation in both directions. They pump the lubricant back into the bearing arrangement and expel contaminants.
The sinusoidal form of the sealing lip considerably extends the path (fig 4) on the counterface surface and at the same time reduces the specific surface pressure at the sealing lip/counterface contact.
As a consequence, SKF WAVE seals produce up to 20% less friction (
diagram 1) resulting in up to 30% lower temperatures (
diagram 2) than conventional lip designs. Reduced friction and the sinusoidal path of the sealing lips help prevent the formation of deep tracks in the counterface, resulting in significantly extended service life. SKF WAVE seals are recommended where demands for operational reliability and long service life for machines and equipment are high.
Market speak? CHECK! does it work, I sure hope so. It appears a few companies use technology but SKF is the one I could find that had the right size.
The sinusoidal pattern, present in this sort of seals, support wet-running applications in various machines. While the shaft of the seal rotates, every point of the sealing lip coats a different place of shaft repeatedly and moistens it with the medium. This, as a result, lowers temperature rise and friction at the sealing place. Even the wave-like pattern of the contact path offers self-cleaning advantage. If any small dirt particle comes under the sealing lip, they are quickly removed from the contact area. It reduces the chance of tearing down and expands operating life of the equipment
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There...you either had a small learning experience or you got to color....