HF parts service has undergone a massive change in the last 2 years. I used to get excellent service and outstanding prices, albeit delivery was slow (but things were coming from Taiwan). I bought a 5 step cast iron pulley for a mill drill and a gear rack for a drill press (bent it!) and things were really good. Now there is no direct phone service; one has to submit an email and receive a quote. If the quote is in order then you call a toll free number and quote the email quote number and the HF associate takes your shipping information. Price is predicated on shipping date (close to quoted price or so they claim) and so therefore HF calls you back when the component arrives stateside to collect the bill and ship the item.
HF is just lame as compared with the past. I would venture a guess that HF was using an outside vendor for parts and decided to end that relationship - at the expense of customer service. Grizzly is very good provided you have a part number. Grizzly will attempt to match other brand Asian components with the understanding that there is no guarantee about fit or anything. You can ship the part to them at your expense and they will try to match it. You pay return shipping and for any parts you purchase (of course).
I have never tried ENCO for parts. They are a division of MSC, although this is never mentioned nor promoted. If anyone has any experience with ENCO or MSC parts service, I would be interested in hearing your experience. There used to be an outfit that advertised parts for most all Taiwanese machine tools. I never used them and I have not seen their advert in the last couple of years. For American machines I have had some very good experiences with Plaza Machinery in Vermont. Occasionally, Plaza has some bits and leftovers for Asian machines at bargain prices.
Geoff Morgan