Bearings

Sorry to disagree, but you show a split BUSHING, not a split bearing.

This:

is a split bearing.

To be a bit more pedantic, that first pic is adjustable, not split, It would generally be referred to as a bush but it is still a bearing.

A bush (normally called a "plain bearing"), be it Babbit, White metal, etc. or even the timber Guayacan as was used for many years in quality clock movements is still a bearing, as are magnetic and fluid bearings and rolling element bearings such as shown by Lyn.

A pillow block can be either split or solid, is normally supplied with a bearing or bushing, and is generally used for light loadings. Heavier duty units, generally supplied sans bearing are more correctly referred to as Plummer blocks but often also referred to as Pillow blocks

Anything that BEARS weight is a bearing.

The pic is not adjustable, but split. Bearing, I'll give you.

We are at a disadvantage because your lorries, which are fueled with what you call petrol, may use a "bush"/plane bearing.

Our gasoline fueled trucks use bushings and bearings.

We can play the semantics game all day long. Two great nations separated by a common language and all.

More images for split bushing bearings

both of you need a hobby

We have them. I'm watching the NASCAR race and drinking a cold one.

This I do as a diversion. Like I said, this is a tough house to play too.

Just wait until Andy wakes up and dazzles us with his brilliance.

AGAIN, TODAY, OK!!

A "split bearing" is a bearing that has literally been "split" in half. The bearing is able to be installed onto shafts that have no accessible end to slip the bearing over. It can be done in the shop.

The inner race of the bearing is scored on the inside of the race at the 12 and 6 o'clock positions. It is then cooled to LN2 temperature by immersion. Then it is broken in half at the score line. It can be installed on the shaft and kept in place by shaft clamps at either end of the race.

The bearing balls or rollers can then be held in place to the inner race by the split cage and a thick layer of grease.

The outer race is similarly broken in half and placed in position around the balls/rollers. Care is taken to put the "break line" not in a load zone. A split pillowblock housing holds everything together.

With no loading on the exterior race crack, it lasts forever.

There is a slight defect on the inner race, but since it matches at the atomic level, it lasts basically forever.
My only experience with a split bearing was on a very low rpm, low load application and raceway wear rate was very low.
It was out of the question to remove the shaft, it would have taken days. We needed this done in hours or the "lost profit' clock would start running at $1 per second.

Welcome to the forum.

From your explanation it is obvious that you know your way around a bearing.

We're a tough audience to play to. But for the most part, we play nice with each other.

Thank you for the kind welcome. I like to keep things civil also!

A little historical side note on split bearings or bushings,or inserts;semantics aside for

now please:

In the not-so-distant-past,connecting rod journals for engines were split by cutting

them in half.

Then they had to be reassembled and remachined to correct for the removed metal.

An engineer was repairing a piece of broken pottery,and realized that the parts went

back together precisely.

The idea was incorporated into manufacturing,and modern connecting rods are

broken instead of cut,and the mating surfaces have a lot more surface area,are

stronger and fit together precisely without any additonal machining.

Serendipity at it's best!

If you cant find your bearings use this. Ask them, call them look at their web site.

This is an endorsement!

Fredski,

Is there a question in your post or is this just a little show and tell?

I think all of old timers in the maintenance field already know what Fredski is posting, but, there are a lot of newbies out there. This isn't the kind of stuff they usually teach in schools, except of course in technical schools(hopefully at least).

His example looks almost like a mount for a back gear on a metal lathe?

Really?