Interestingly it looks like Spider has adapted his puller to wind out the bearing whereas mine uses a slide hammer action which is probably not as efficient due to the jarring shock
Yes, I should have mentioned that. I initially bought 2 loose Sykes & Pikervant Internal Expanding Collets about 40 years ago. I didn't like the slide hammer action of their kit and so I made mine for use with pipe pieces and althread rod. The bit of kit in these photos are those same ones I bought all that time ago. I don't know how many hundreds of bearings these have pulled in all that time, while they are now showing their age & use, I feel I can put down their longevity partly due to the quality of them but mostly by using them in a more gental fashion on threaded rod rather than bashing them to death with a sliding weight on a rod.
Personally, I do believe slide hammers have their place, I do have one, but pulling bearings like these from alloy casings isn't a place to use them - just my own view.