Press fit lube?

I did a Google search for "press fit lube" and this was the result.

http://www.goodson.com/store/template/product_detail.php?IID=5091

 

Antiseize is an excellent high pressure lube for that type of thing. Freeze the bearing for 4 hrs and heat the aluminum with a torch and you will gain a .002" advantage where it might just slip in.

 

I would (humbly) suggest a heat gun instead of a "torch". Sharp edges of an aluminum, machined part, can melt before you know it. I expect you can guess how I know this.

 

I have used Lubriplate 105 for years when I am pressing together multipiece crank shafts on dirt bikes. These tend to require up to 30 ton presses to press them into place.

http://www.lubriplate.com/products/greases/no-105-motor-assembly-grease.html

Permatex Anti Seize is a good standby and can be purchased at an auto parts store.

http://www.permatex.com/products/motorcycle/motorcycle_lubricants/motorcycle_specialty_lubricants/motorcycle_permatex_anti_seize_lubricant.htm

As for heating up the case I prefer not using a torch directly also instead I will take a steel disk about 2" in diameter with a long handle about 12" long. I will heat this up with a torch then place it onto the case that needs heat. Then I will let the heat soak in to the case, if it needs more heat a small flame from the torch can be applied to the disk to add more heat.

 

That would be an understatement. With aluminum it goes like this --- looks great, looks great, looks great, puddle. The transition is extremely quick so even if you don't make puddle the part will slump and deform.

 

It's a small part, assuming no rubber or plastic seals put it in the oven @ 350. Make sure wife is away for a few hours