Not really, but can do/have done.
They aren’t designed for machine feeding but you can feed decent straightish stuff into them with a grab easy enough - the feed will take 7.5inchx11inch timber. If you try to stuff grab-fulls of brash through them you’ll soon bend something though…
For digger feeding we have a much bigger Bandit pto machine with a 12x20 (I think) inch opening but that’s too small for a lot of our jobs, so we tend to sub BIG chippers in as required.
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If you were buying something on tracks to exclusively feed with a machine you’d need to be looking at £50k plus for something very secondhand, and a minimum of 12 inch capacity. UFKES have a 3.5 tonne (so towable) 140hp trailer-mounted machine (also available as a tracked unit) drum chipper which is a hand-feed machine but is also designed for machine feeding (safety bar overridden etc) which has the best ‘small’ chipper hopper setup for feeding with a grab that I’ve used - it’s very open from above upto the feed rollers. It’s a fantastic machine but is over £90k plus the vat for the basic wheeled version (and won’t load artics)...