Chipper blade snapped

[Mick Dempsey]

13 minutes ago, Ty Korrigan said:

The blade which is now embedded in the back of your transit plywood?

  Lol...

    Stuart

Don’t think so, it was when I was ordering TW blades. So could have been one of three companies.

[GA Groundcare]

Lubricated threads and dry threads torqued to the same setting will give a different tightness. But not to the effect of snapping blades. If that’s correct they should 100% have a decal saying only torque dry, that commonly chosen method of lubricating threads shouldn’t carry a risk of killing someone / damaging the machine. 

 

[aspenarb]

Its a load of bollocks, if you buy any new cap screws they are covered in oil in the box and the rotor when new will have lubricant in the threaded holes. Is the nobsocket suggesting they are degreased/dried before they fit them?

 

Bob

[GA Groundcare]

Is it a Jensen or Forst? 300+nm does always seem very tight for a M16 bolt. 

[PeteB]

I always thought blade angle a tad keen too. If it hits something quite hard and quite quick - it could fold!

[treeclimber26]

1 hour ago, Mick Dempsey said:

 

Hi Mick,

ive just had the same with my Forst st6p. I greased the bolts and as standard practice for blade replacement we did it. In the manual on blade change section says nothing at all not to grease. My machine is wrecked and probably going to be over £8k in damages . They now tell me it’s not covered in warranty. The bolts snapped but blade fine

[butters]

It does state in the manual to change the bolts, nuts and washers on every blade change. Probably down to the fact they are torqued to 300nm. But for 7quid a set it’s worth it in my opinion.

[GA Groundcare]

36 minutes ago, butters said:

It does state in the manual to change the bolts, nuts and washers on every blade change. Probably down to the fact they are torqued to 300nm. But for 7quid a set it’s worth it in my opinion.

Blade change including swapping for sharpening? 
I prefer a blade that seats itself rather than the full load going through the bolt. 

[Khriss]

19 minutes ago, GA Groundcare said:

Blade change including swapping for sharpening? 
I prefer a blade that seats itself rather than the full load going through the bolt. 

No one tends to check the blade securing system when they buy a chipper, they expect the engineer to have thought that one through. K

[tonytree]

5 hours ago, doobin said:

So which dealer told you that?

That was forst