Yeah it how we do mostly all bearings in the shop for bikes. Rarely need to use a puller. Cars, that's different! I'll try to do a video of the final drive bearings that I'm going to replace on an early 400 later this year. You'll notice no pullers needed. Just the heat gun. They literally just drop out when you turn the case 'bearing side down' and give it a minor tap. Easy!
Not so well! Alloy engine and gearbox cases lend themselve to heating up very well and the bearings just drop out. That's how all pro's do it and how I was trained on my factory courses. Pullers hardly ever needed. In a steel housing heat does help but may not do the job completely without a proper puller and depending on what bike and what bearing it is, just a few taps with a bearing driver. That's because the steel housing will heat up and expand at roughly the same rate as the bearing, unlike an alloy engine case which expands exponentially more quickly than the bearing you are trying to remove. Not had to do the steering head bearing yet on any Burgman but it's easy I would imagine.Would that work also on the steering head bearings?