Anti-sieze or Removable loc-tight for drum chipper knife wedges

[Davidsinatree]

I'm servicing knives for my first time on a drum chipper, olatha 12''.
My ? is should i use anti-sieze or loc-tight on the 1/2 13 bolts that hold the wedges in. There are 3 bolts per wedge. There are 4 knives on this drum.
Also what are some torque specs for this application.
I don't want to witness these knives flying out of this machine.
From reading other treads on knife gap settings I'm going to set the gap about .020.
The person i bought this chipper from just had the knives sharpened but he had the gap was set at almost 1/8'', this thing was not pulling the wood in very good, I hope resetting the gap solves that problem.

Thanks
David

 

[Stumper]

I don't know the torque specs on that one David-if I were just going to guess I would say 90 ft.lbs. Definitely use anti seize-Hi torque applications don't need loctite the problem is getting things loose again.

 

[DDM]

If there 1/2" bolts torque them to 125 ft Lbs. Install your wedge torgue them down then use a brass bar and hammer to set the wedge then re-torque.
Make sure if there allen head bolts that they still have good edges and not getting worn if so Replace them. Use never seize DO NOT USE LOCKTITE.

 

[glens]

And I just handed over the Machinery's Handbook to little bro the other day...

Google gives these couple of interesting documents, the second of which maybe isn't completely helpful but does offer the knowledge that "Antiseize lubricants can reduce torque required by approximately 20%."

http://www.sizes.com/tools/bolts_SAEtork.htm

http://mdmetric.com/tech/data1torque.html

 

[DDM]

And I just handed over the Machinery's Handbook to little bro the other day...

Google gives these couple of interesting documents, the second of which maybe isn't completely helpful but does offer the knowledge that "Antiseize lubricants can reduce torque required by approximately 20%."

http://www.sizes.com/tools/bolts_SAEtork.htm

http://mdmetric.com/tech/data1torque.html

Okay I was off 4lbs Torque it to 121 Lbs......

 

[Stumper]

David, DDM alluded to this but-It is a really good idea to replace the bolts often-about every third knife change isn't a bad regimen.

 

[glens]

I hadn't intended my reply to be a correction to any preceding ones.&nbsp; I fetch many threads at once and often don't look to see if they've had more posts since, before I reply.&nbsp; However, I feel that using the dry values with anti-seize is dangerous, since bolts are tension devices and the tightening torque figures factor in the friction component.&nbsp; If you remove or greatly reduce the friction, you can <i>easily</i> over-stress one of the threaded components.&nbsp; You never want to pull a spring too tight!

Yes, keeping them fresh is cheap insurance.

Here's a third, perhaps best overall, link:&nbsp; http://raskcycle.com/techtip/webdoc14.html

Glen