Verhoeven rail bolt torque specs.

[redcordes]

Can anyone please provide me with the proper rail bolt torque specs. and recommended tighten sequence for a 5 x 10 Verhoeven carom table? Thank you.

 

[rexus31]

Quick Google Search yielded this.

Thread 'rail bolt torque'

Apr 30, 2019

If the torque on the Diamonds is 15 lbs, what should it be on a Gabriels carom?

• billiard dave 7
• Replies: 5
• Forum: Talk To A Mechanic

 

[3kushn]

I believe the Cobra says 12ft/lbs.

Not sure if he has factory info or its his gut feeling.

I asked Verhoeven the same question and they couldn't answer it. Or wouldn't for some strange reason.

 

[realkingcobra]

I believe the Cobra says 12ft/lbs.

Not sure if he has factory info or its his gut feeling.

I asked Verhoeven the same question and they couldn't answer it. Or wouldn't for some strange reason.

Because no table manufacturers have ever recommended a rail bolt torque. The torque is specifically determined by the rail bolt anchor system, not the torque specification of the bolt used! Using T-nuts for anchors like Olhausen installs in their rails won't hold up to a higher torque specification compared to a GC3 or newer, or a Diamond for example. All billiards tables that use the threaded inserts, or the floating nut plate need to be set at 15ftlbs torque.

 

[3kushn]

The torque is specifically determined by the rail bolt anchor system, not the torque specification of the bolt used!

Ya, years ago I was setting up torque control power tools at a tractor assembly plant and one of the parts was a rubber clamp sandwiched between 2 metal plates, the bolts were something like an M8. The torque spec was for a M8 Grade 10.9 from some bolt chart. Not only could I not reach their torque spec. with my tools, when I got there using a digital torque wrench, the rubber was completely flattened/extruded. Ugly looking assembly.

Suggested to the ME to revisit the spec and get back to me.

 

[Lawnboy77]

Ya, years ago I was setting up torque control power tools at a tractor assembly plant and one of the parts was a rubber clamp sandwiched between 2 metal plates, the bolts were something like an M8. The torque spec was for a M8 Grade 10.9 from some bolt chart. Not only could I not reach their torque spec. with my tools, when I got there using a digital torque wrench, the rubber was completely flattened/extruded. Ugly looking assembly.

Suggested to the ME to revisit the spec and get back to me.

I have run across the same over the years. The engineers are not always right. Sometimes they are sitting at a desk and not really familiar with the application.

 

[realkingcobra]

Ya, years ago I was setting up torque control power tools at a tractor assembly plant and one of the parts was a rubber clamp sandwiched between 2 metal plates, the bolts were something like an M8. The torque spec was for a M8 Grade 10.9 from some bolt chart. Not only could I not reach their torque spec. with my tools, when I got there using a digital torque wrench, the rubber was completely flattened/extruded. Ugly looking assembly.

Suggested to the ME to revisit the spec and get back to me.

That's what most mechanics don't understand when they're using impact drills to install the rail bolts. I only use a 12V Makita drill to install the rail bolts, then finish tightening with a torque wrench.