Chipper blade torque wrench

[QuattroKev]

About to change my blades for the first time. Says 310nm on the side of the machine.

 

Looking at torque wrenches of this size, your looking at about a 100 quid!

 

Seems quite a high number when a post on a timber wolf mentioned 61nm

[woody paul]

That's tight, I would check if that's right.

[dan494]

My Jensen is around 210nm which

Is just in range of the £25 torque wrench from screw fix

[defenderjack]

Most Jensen blades are 310 nm I put a thread up the other day about torque wrenches , I've bought a teng tool one 135 quid does up to 370 I believe or something like that. I think the bolts on a timber wolf 150 are around 80 nm but there tiny in comparison to other chipper blades

[QuattroKev]

Looks like I'll have to shell out then, cheapest I found was about £70 on eBay. upto 400nm

 

Big investment for all be it useful but rarely used tool.

[defenderjack]

Looks like I'll have to shell out then, cheapest I found was about £70 on eBay. upto 400nm

 

Big investment for all be it useful but rarely used tool.

 

Yeh it does seem a lot but I had a set of blades shatter on a Jensen and ruined the machine , not sure if was anything to do with bolts not being tightend enough but , 70 quid for piece of mind isn't a lot in the grand scheme of chipper prices !

[White Noise]

IMO...... I really do think that the big chipper companies should supply a calibrated torque wrench which is suitable and pre set to there blade recommendations ....and can not be changed ? Makes sense to me . I also have other ideas ...... Although speaking with others at the moment so mums the word ......

[Mark Bolam]

I over tightened the bolts on my TW for years.

I was surprised at how little 61Nm was when I actually used a torque wrench.

It's certainly been easier loosening them since when it's blade change time.

[Breezeblock]

what size are the bolts that torque seems awfully high for blade bolts they must be a large diameter or high strength bolts

[Mark Bolam]

I thought that.