Think about it. That makes absolutely no sense at all. Most half way decent trailers come with EZ-Lube, Sure-Lube, Acu-Lube, etc hubs. Probably even your trailer. There's a grease fitting built into the spindle. The design is to totally fill the center cavity and stuff as much grease as possible into the bearing. We're not talking bearing buddies here. They are not your buddy in reality.
I guess it depends on what bearing guy one talks to. The guy that manufacturers them, and saves 10 cents per bearing by light greasing. Over a million bearings is an extra $100k to the bottom line.
Or the bearing guys, on the front lines, that have seen them burn up by too little grease.
Most bearing people are looking at bearings for more of a industrial application on motors and conveyors or places where they are not subject to water and extreme temps. In a huge manufacturing facility with hundreds of motors, conveyors and assembly lines that extra rolling resistance could equate to a ton of extra cost per year.
In a "perfect" world the amount of grease they put in a bearing is "perfect". Snowmobiles and trailers are not exactly perfect worlds for bearings.
One of the biggest problems with snowmobiles and trailers is the long periods of sitting idle. A little moisture in the bearings and the balls get a little surface rust, the bearing gets a little loose, and then the seals don't seal right. If you could keep those bearings moving on a regular basis you would probably eliminate most of your bearing problems.
I put rotating my idler wheels on my snowmobile on a regular basis right up there with rearranging my sock drawer (probably not getting done anytime soon). So untill then, I agree, fill the bearing with grease and you will eliminate space for water.
