Discbine - Shear Hubs - Necessity or Gimmick????

Or something else.....

 

Looking at a youtube video by Massey Ferguson / Hesston on their 1363 mower conditioner last night

 

 

and in the video the guy mentions, if I heard it right - no shear protection is provided - because the cutterbar and gear design is such that it's strong enough and doesn't need any protection.  One of the selling points in this video and/or maybe another one said that because 3 gear teeth are in constant mesh with the mating gears - shear protection is not needed.

 

MF/Hesston mentions the cutter bar is the same as used in their windrowers - so I'm thinking, exclusive, only MF/Hesston - no one else does this - OK heavy duty.

 

However, just for kicks, I also looked at NH and JD windrowers and it appears they are using the same cutter bars in their discbines - along with shear hubs.

 

So what's the deal with MF/Hesston.  Is the cutterbar so heavy duty you really don't need shear protection?  Or is their cutter bar a time bomb waiting to happen?

 

Just curious.

 

Thanks,

Bill

Discbine - Shear Hubs - Necessity or Gimmick????