PT425 60" Finish Mower and 48" Brush Cutter Rear Wheels

   / PT425 60" Finish Mower and 48" Brush Cutter Rear Wheels #1  

MossRoad

Super Moderator
Joined
Aug 31, 2001
Messages
58,021
Location
South Bend, Indiana (near)
Tractor
Power Trac PT425 2001 Model Year
The rear wheels on both my 48" brush cutter and 60" finish mower have seen better days. Power Trac wants about $25.00 each. I found these for $7.63 each.

http://thecasterguy.com/wheels-polyolefin-c-2_245/8-wheel-x-2-wide-x-3-4-bore-size-rb-p-2766

Originally, the finish mower had 7" wheels with 3/4" bore, and a 3/4"-1/2" bushing to reduce the axle hole to the 1/2" axle bolt size. I called Power Trac and they apparently no longer sell the 7" wheel for the finish mower. They have changed to the same 8" wheel as the brush cutter.

The original wheels on both the brush cutter and finish mower had no bearings and are not greasable.
These wheels have roller bearings and seals. No grease zerk hole, though one could probably drill and tap for that.
So I greased them up before installation and will grease them annually during the winter.

They are the same material as the original wheels (made by Colson). They are rated at 900 pounds, so that shouldn't be a problem. The edges are more rounded than the original finish mower wheels, so that will be a plus when turning.

For the brush cutter, it just uses a 3/4" axle bolt, so no bushing is required.
We'll see how they hold up to the abuse of the brush cutter.

In the picture is the new wheel and the old finish mower wheel.... more like a pizza cutter now! :laughing:
Hard to see, but there is a metal sleeve inside the new wheel.
Below the new wheel is the two seals and the roller bearing.
To axle shaft bushing, the 1/2" axle shaft bolt with a washer (goes on the outside).
A washer goes on the inside of the wheel.
Then the bolt goes through the height hole, another washer and a lock nut.
The bolt tightens down the and the washers pinch the bushing, which is just a tad longer than the hole through the wheel, so the wheel rolls nicely on the bearing.

For the brush cutter, I did a similar thing, but put a nut on both the inside and outside of the mounting hole and some flat washers for spacers since there is not a bushing to snug up the bolt. Too tight and you'd pinch the wheel.


PT425 mower wheels.JPG
 
   / PT425 60" Finish Mower and 48" Brush Cutter Rear Wheels #2  
Thanks for all the post!

Im going to order a couple of those wheels you found for the back of the mower. I broke the original ones on various rocks and such, i replaced those with some aluminum casters i found at Boeing surplus when they used to be open. I sure miss that place :*( . Now the caster's bearings have seen better days, and are giving out. They weren't built for dirt duty, capable as far as weight goes but made for indoor use moving heavy aircraft parts around during assembly.
 
   / PT425 60" Finish Mower and 48" Brush Cutter Rear Wheels #3  
I bought my replacements from grainger before pt sent me new ones under warranty. Roller bearings with a steel wheel and a heavy duty rubber overlay. I love these gainer wheels. If I knew how much it would cost to ship PT wheels I would sell those things. I've never used them.
 
   / PT425 60" Finish Mower and 48" Brush Cutter Rear Wheels #4  
I guess I am lucky with soft soil. My rear wheels are still in good shape. I did go to a military warehouse and looked at wheels for the front which I use on the mower as well as snow blade. The shaft size was different so am still looking.
PJ
 
   / PT425 60" Finish Mower and 48" Brush Cutter Rear Wheels
  • Thread Starter
#5  
Yeah, I switched to solid front tires on the brush cutter many years ago. I swap them to the snowplow in the winter, too.
 

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