Recent content by RDMgr

Don't forget the bottle of Boone's Farm Strawberry Hill wine.

Did it smell like gasoline with sweaty feet or fromunda cheese?

a.k.a. triangulate cobweb spider

If you're looking to consolidate to one grease, compare the PDSs. The molybdenum disulfide in the 274 may be beneficial to applications involving sliding contact and not beneficial (maybe even detrimental) to rolling element bearings. Comparing Four Ball EP Weld Points and Load Wear Indices and...

You can calculate the requirements as long as you have the information. Once you know the requirements you can select a grease that is likely to improve bearing performance. Dn and NDm are not very high, 53200 and 91200, respectively. Operating temperature is an important factor calculating...

Your success still doesn’t mean that grease compatibility is limited to thickener and doesn’t have potential negative consequences. The primary method of testing grease compatibility starts with mechanical stability. This phase is looking at thickener compatibility. If the greases are compatible...

Running lithium in everything still doesn't address additive incompatibility. Probably the best approach is to use the same brand and product in everything.

Of course, if sampling and analyses aren't valid with repeatable results or giving you the insight that you need, why do it. We did all analysis in house, both routine and exception testing. The work always involved long term trends during which routine analysis might show specific anomalies...

Just because thickeners may be compatible, those compatibility charts are not always right and sometimes contradict each other, there are other considerations such as base oils and additives. In this case base oils are likely compatible. Most general purpose greases are based on mineral oils...

Bel-Ray Waterproof Grease is aluminum complex.

These times to produce lithium and aluminum complex greases are not accurate at all.

The dropping point is not the upper service temperature limit. A grease with a dropping point of 500°F will have an upper limit of about 350°F. Even operating at this temperature will be limited by base oil type, additives, frequency of application, etc. These things are not really issues for...

I think that is referred to as viscous drag or skin friction drag.

Not to the point but my own wiper experience, when I was 18-19 y.o in the early 1970s, I drove a great 1964 Triumph TR4. Its wiper motor was so weak I had to oil the windshield with a light coating of the motor oil I used just to get them to operate. I did this to get through NJ state...