No Cracked but snapped blade

[combined tree services]

Hi just wondering if anyone has had experience of Jensen chipper blades snapping whilst in the machine ??. Today i was removing the blades from our A240 that we have just bought , my intention was to get them sharpened as they were blunt but on removing the first blade i noticed that the first 1/4 of the blade had snapped and that the middle of the blade was cracked to the point it was only just held together !!! these blades are not genuine Jensen blades but they are from a well known supplier of which i have bought several sets of blades for our other chipper from .

 

To be honest im guite shocked that they were in this condition and so glad that we didnt test or put the chipper strait to work !!

[Pooch0151]

That's no good to you your best putting the wright ones on it now m8 so you no you and your staff r safe

[Brushcutter]

Yes many years ago now though. Blades broke and came through the flywheel housing. Wasn't my chipper though.

[combined tree services]

what was the reason behind them breaking ?

[Brushcutter]

what was the reason behind them breaking ?

 

I don't think they ever found out. never happened again.

[combined tree services]

hmmmm im so thankfull i never ran the machine up !!

[Old Mill Tree Care]

I had blades snap on my old Camon chipper (awful machine) because they had been sharpened so many times the measurement between the blade and the bolt hole was reduced too much.

 

I would only use genuine blades on my Jensen. Not worth the risk IMO.

[Shane]

When you spend a large sum on a machine is it worth saving a few quid on 'cheap' blades.

Along with the bearings the blades are at the heart of the process.

 

The saving (£20??) is far outweighed by the risk (mullered machine/ injured operator/member of public) IMO.

[combined tree services]

this is so true Shane , i will be speaking to the guy i bought it from and request a genuine replacement blades .

[PeteB]

Flat blades can break because they have over sharpened and there is not enough meat left between cutting edge and blade holes, or the rotor isn't flat or they have been "bent" over something when torqued down. That or they have tried to chip the unchippable! If blades are too hard then they can be brittle, too soft and they wear too quick....