How To - Separate A Main Bearing From A Crankshaft Video

How To - Separate A Main Bearing From A Crankshaft

If you need to separate a main bearing from a crankshaft, but you are not sure how, you are in luck. Our step by step video will walk you through how to separate a main bearing from a crankshaft. Watch our industry expert as he separates a main bearing from a crankshaft. Trust us to have the answers and instructions you need – every time.


Hi. This is Eric from

Today I'm going to show you how to separate a main bearing from a crankshaft. To do it, we're going to use the Tusk bearing separator. It's a pretty cool tool. It actually slides in behind the bearings, so you can get at bearings that you can't hammer or press off.

The reason this tool's needed is because, when you're splitting your cases, a lot of times the main bearing will stay in the case half, but there is some occasions when it will come out and it'll look like this and the bearing's going to be actually on the crank, and what you need is something to get behind that bearing and pull it off. That's what this bearing separator does.

All right, we're going to go ahead and start with the main jaws, and they actually go down, and make sure they go underneath your bearing. Tighten those up. Just make sure the jaws stay nice and parallel with each other. Don't want them all skiwampus. You get snug, go ahead and use a ratchet. Tighten them a little bit more, just so those jaws get under there nice. That's pretty good. There's the two uprights, go in there.

Then you have your main pulling bar, center that over the end of your crank. Then, just going to turn that. See that bearing starting to come off? Nice and even. Turns something that used to be a pretty big problem into something that's actually pretty easy to solve.

There's your bearing. As you can see, this tool works great for pulling main bearings off crankshafts, but it's not limited to that. You can also use it to separate bearings or gears off transmission shafts, or basically any time you have a bearing that's butted up next to something you can pull it off, and it works really well.