Rotary Cutter mower driveshaft shields chained or unchained

   / mower driveshaft shields chained or unchained #1  

gwtx

Member
Joined
Jul 18, 2010
Messages
26
Location
near Goliad,TX
Tractor
Hesston(fiat) 466DT/ Kubota7060/Ford 3400/KomatsuD20 Modern AG 15' batwing
I recently bought a new 15' "batwing" shredder/mower. It has the Bondioli(sp) driveshaft shields with chains to attach to keep the shields from spinning. It looks to me like a good way to wear out the shields sooner so they can sell new ones, or have to replace the nylon bearings frequently.
I have been running an old TerrainKing for over 20 yrs which had no shields whatsoever when I bought it used. I made some out of pvc drain pipe to keep dirt out of the sliding joints on the shafts, and to keep limbs(tree limbs) and branches from wrapping up in the spinning shafts. The pvc shields spun with the driveshaft, but if anything touched them, they stopped. No danger of them "grabbing" you and pulling you into the driveshaft. So, is there anyone who has taken the chains off and run the shields without them? Initially, I did and didn't see any ill effects. I put them back on until I could do some research on the matter. I'm more concerned about "down the road"expense than I am about being "grabbed" by one of the spinning shields. I don't get off the tractor until the shafts are completely stopped. I don't like the fact that I can't quickly tell if one of the slip clutches has disengaged and is destroying itself. When I look back it looks like everything has stopped,,,until I squint into the openings between the shield and slip clutches. I am running a "cab and air" tractor for the first time in my life and I like the quiet and the cool and the clean, but, I am used to being more "connected" to the tractor and shredder. I know there are safety concerns, and I am aware of those. I am asking for input from anyone who is running the shields "unchained". What are the opinions/pros/cons/ etc. Sorry for the long post, but I wanted to make clear the information I am looking for. I have read other posts which were more safety oriented, and did not quite answer my question. Thanks, Gary
 
   / mower driveshaft shields chained or unchained
  • Thread Starter
#3  
Thanks Rick, my thoughts as well.
I also agree whole heartedly with your "sign off" statement". You definitely have too much gun control up there.
 
   / mower driveshaft shields chained or unchained #4  
I haven't had chains on mine for 2 years with no issues.
 
   / mower driveshaft shields chained or unchained #5  
The few shields I have are unchained. I'm not a big fan of having them at all.
 
   / mower driveshaft shields chained or unchained #6  
I always chain my shields, AND I grease the shield each time I grease the machine (mower/ rake etc). I have found that in heavy grass a rotating shield will grab the grass, then I have to stop and cut the shield free.
 
   / mower driveshaft shields chained or unchained #7  
I do the same as redman - its on my chipper, so no grass windup. I've never had an accident with a PTO - but then an accident is never anticipated - thats why its called an accident. I don't even like the thought of getting wound up with a PTO on a 60 hp tractor.
 
   / mower driveshaft shields chained or unchained #8  
I do NOT hook up the chains but I do occasionally grease the cover "bearings" just in case something (me) should come in contact with the spinning cover. My justification is that there should be little torque that can be transmitted if the bearings are in good shape and greased.
 
   / mower driveshaft shields chained or unchained
  • Thread Starter
#9  
I do NOT hook up the chains but I do occasionally grease the cover "bearings" just in case something (me) should come in contact with the spinning cover. My justification is that there should be little torque that can be transmitted if the bearings are in good shape and greased.

Thanks JR, That's what I was thinking of doing,,but I may chain the one on the Pto shaft If I get into really high weeds and they start to wrap up on it. The ones on the gearboxes shouldn't have that problem. Thanks for the reply. Gary
 
   / mower driveshaft shields chained or unchained #10  
My experience is more with winter operation.
I bought a new PTO shaft from the manufacturer of my snowblower for reasons of reliability.
My health is such that at times I could not deal with a broken U joint.
The shaft came with shields and chains. I attached both chains.
Soon after the first big snow, I noticed the one chain closest to the blower had been ripped off off the shield.
Snow and ice had frozen the shield to the shaft and if I had got near it I could have had a bad experience.
For me, it is a warning sign that all is not right and I will continue to use the chains.
Dave M7040
 
 
 
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