New Power-Bolt installation torque

It's now 18 ft lbs for 3/8" and 30 ft lbs for 1/2", up from 12 ft lbs and 25 ft lbs.

The sale thread mentioned installation torque, and I noticed that the installation torque values changed in the latest spec sheet. No idea if anything actually changed with the bolt, but the 50% increase for the 3/8" size is substantial.

Old:

New:

I had noticed this a while back,  I am curious if something in the design has changed. 

Andrew Jacksonwrote:

I had noticed this a while back,  I am curious if something in the design has changed. 

AJ if something had changed in design, they would have to change the model name of the bolt or identify by batch number somehow when this new torque spec were to be used.

This was inevitable with the loose bolt issues. I have read here that  DeWalt engineers were allready recommending higher torques to people reporting problems.

 Climbers are not the intended user of these bolts. Loose bolts in industrial use are not good either. I am sure they were getting complaints from other users as well.

Thanks Tim, that's good to know. Locally,  I've had some issues with perennial spinners on a few routes. I was planning on replacing them with glue-ins,  but will try the higher torque first.

They need to go to a recommended torque range rather than a specific number. I wish they’d have a maximum torque too. There’s way too many variables to say… 18fp is your number! Any more or less and YGD!!!  This is why I go by feel. I don’t use a torque wrench and rarely ever get spinners. 

Austin Donisanwrote:

It's now 18 ft lbs for 3/8" and 30 ft lbs for 1/2", up from 12 ft lbs and 25 ft lbs.

The sale thread mentioned installation torque, and I noticed that the installation torque values changed in the latest spec sheet. No idea if anything actually changed with the bolt, but the 50% increase for the 3/8" size is substantial.

Old:

New:

DO you have the link for these charts?

I linked the current (Rev C) spec sheet in that post.

I screenshotted the old values from the Fixe site. But you can see the same data in the previous specsheet (Rev B) too (pdf page 81) :
https://www.buildsite.com/pdf/dewaltanchors/DeWALT-Mechanical-Anchoring-Tech-Guide-for-the-Design-Professional-2053238.pdf

Here's the specs from 2006:

I have the whole 12-page PDF spec sheet from then if anyone is interested. It starts off with: "The Power-Bolt anchor, formerly known as the Rawl-bolt,...."