What should I use to lubricate the pivot point on my DR. I have heard many things from vaseline to hi tek grease. I presently just wipe with oily patch.

The hook and knuckle need grease, never just oil. Any good load bearing grease stiff enough to stay in place. The last time I asked J. J., he suggested Lubriplate.
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quote:

Originally posted by 400 Nitro Express:
The hook and knuckle need grease, never just oil. Any good load bearing grease stiff enough to stay in place. The last time I asked J. J., he suggested Lubriplate.
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I am sure that would be fine. Ken Owen sells small containers of grease for the purpose under discussion as well.

I use the same stuff I use for my O/U skeet guns ie. RIG. STOS is just as good. It is a grease.
Peter.

FWIW,

I found that RIG grease will melt and run in the heat. I had to keep it in the fridge in Zim last Oct to keep it from a nearly liquid consistency. There was little evidence of the grease on the pin and hook, etc, when I cleaned my rifle each evening, indicating that it had melted and run. This even if the rifle went unfired for the day.

JPK

You can get fancy if you have that need, but plain old Vasaline will do!

There are greases especially made for areas of high pressure such as hinge pins .RIG +P is one of them .Most of the greases advertised for stainless steel also designed for this.

My Krieghoff came with a tube of white lube called K-Gun Glide.

"Gun Glide (GG) is a special grease to lubricate metal-to-metal parts of a firearm, where barrels, receiver and forend meet. Apply a thin coat of GG to hinge or pivot pins, barrel lugs, barrel ears, and the roll of the forend iron where it meets the receiver."

"Do not use on internal trigger mechanism."

To mete's point above, this subject came up on another forum and we fortunately had an engineer who was well versed in the subject add some experience.

The net of his advice was that more than the lubrication of the joint should be considered and that the proper grease not only provided lubrication, but also provided protection against wear when this load bearing area is under stress from firing.

His reccomended any tacky grease that had a Timken OK load rating of 70+ (that's 70K PSI).

Some of the industrial equipment greases we discussed were as high as 80, i.e.: 80,000 psi. FWIW, I haven't found anything above 80.

I paid about $4.00 for a tube of Citgo EP (Extreme Pressure) grease with a Timken OK load rating of 80 (80Kpsi) at a local equipment shop. That was for a "grease gun" size tube.

At my current rate of consumption - I'm guessing it should last me about 10-15 years.

I wonder what the rating is for the typical 90 EP grease for hypoid gears of a rear wheel drive . The hypoid creates high pressures and a wiping action that tends to wipe away grease.

Another vote for the Krieghoff lube. You should be able to find it at any shop that caters to trap or skeet.