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FIBER WASHERS
FIBER WASHERS-
It is important that you understand the need for fiber washers. Some say they are used in the lawn care industry on blades to help with harmonic vibrations. I say, not so! The primary purpose and only reason to use FIBER WASHERS is to prevent over tightening of the blade attachment bolt.
While some manufactures not using Fiber Washers rely on features like "keys" and "stars" to lock a blade onto a shaft these methods only cause damage to the shaft and other components when the blade un-expectedly strikes something, perhaps a rock or stump, root or pipe sticking out of the ground.
When the blade and shaft design has used fiber washers, it is safe to say that if you have a fiber washer in good condition, your blade will be permitted to "slip" if it strikes something. Fiber Washers used properly can prevent costly blade shaft repairs and replacement. So many times people don't understand the importance of Fiber Washers. Perhaps the dealership that sold the machine did not understand the importance either. Not understanding the importance of Fiber Washers by a dealership and not passing on the importance of Fiber Washers to the customer will cause the customer to toss aside the fiber washers when blades are changed, or to "over use" fiber washers.
Any time blades are removed from the blade shaft or the blade bolt is removed or loosened for any reason, all fiber washers should be replaced.
Have you ever looked at the fiber washers after they have been in use for a long time? They are "smashed" and have been compressed by the forces acting upon the fiber washer between the blade shaft and the blade. When a blade bolt is tight, it will become tighter with use. The blade as it strikes grass and other loads applied to the rotational forces of the blade will be caused to move towards "tighten" in regards to the thread design of the blade bolt. This ever so slight force applied to the blade is transmitted via friction and surface tension into a twisting moment onto the blade bolt. Now if you don't hit anything and your blade load and twisting forces remain constant, theory says your blade bolt will only get so tight and will stop "tightening". But, if you were to hit something unexpected, your blade will be the first to absorb any shock load applied to the leading edge of the blade. The blade will have the tendency to take the blade bolt towards tighten even more. But if you have a fresh fiber washer, the blade will be permitted to slip on the fiber washer. This slippage is desirable and under the right conditions, you should be able to rely on the fiber washer to prevent your blade bolt from being twisted toward tighten.
Think about it, the blade is rotating counter clock wise, in a direction, trying to "loosen" the blade bolt. What keeps the blade from "un-screwing" the blade bolt is the forces impacting the blade as it rotates. Acceptable forces and normal forces are those of the grass and clippings impacting the blade as it rotates. It is that one moment in time that the blade strikes something and "slips" on the fiber washer, that you should feel lucky and glad you have fresh fiber washers on top of your blades. If you had used old and worn out fiber washers, your blade would not slip. Worst case, if you had not used your fiber washers, the blade would have nothing to "slip" on and would carry the blade bolt with it in a clock wise rotation, tightening the blade bolt.
In our repair shop, with every blade sharpening, we always install new fiber washers for customers and those customers never have problems with a blade bolt being too tight to remove. It is the customer that does not change out the fiber washers, or tries to "re-use" fiber washers that have been flatted by the compression forces that come in with shaft and blade in hand, asking, "can you remove the blade bolt for me". Our answer is always "You did not change out your fiber washers", "your blade bolt threads are now welded onto your blade shaft." The heat from the tightening friction actually melts the threads of the bolt and the shaft fusing them together so that even if you were able to remove the blade bolt, the shaft would be ruined.
While you are on this Fiber Washer page, buy plenty of fiber washers today!
All you need to do is compare the cost of a blade shaft, blade bolt and your time to quickly realize how inexpensive fiber washers are.
| PART NUMBER | PART DESCRIPTION |
2009 PRICE |
|---|---|---|
| DIXIE CHOPPER W-101 |
FIBER WASHER | $1.49 EACH
$9.50 FOR A |
| GRASSHOPPER 421200 |
FIBER WASHER | $1.49 EACH
$9.50 FOR A |
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This web site has been made available to you for the enhancement of the services we provide to our customers. We have provided a number of resources here to help you resolve FIBER WASHER problems, find FIBER WASHER parts you need, and suggest improvements to our service.
Copyright © 2009
AAAA Generator and Pressure Washer, Inc.
DBA: ARKANSAS OUTDOOR POWER EQUIPMENT
All rights reserved.
Last modified: NOVEMBER 6, 2009
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INTERNATIONAL ORDERS
INFORMATION PAGE PRIOR TO MAKING YOUR PURCHASE.
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SEE THE LINK BELOW
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E-MAIL.....
"The Parts Counter" to add the FIBER WASHERS you are wanting.
