I’ve twice tried to buy grease from KA for my K45, a home machine. The second time I decided to be pretty persistent, just for amusement. I kept the associate tied up for half an hour, but, no, they won’t sell to a non-commercial customer. Reasons given were I could hurt myself or damage ‘my’ machine. I’d have to be a KA certified appliance repair shop.

Finally, food-grade grease appeared on Amazon, so I got that.

It’s very different for commercial users, because the machines have to be lubed regularly, and bakers can’t wait around.

(The famous third party service of McD’s ice cream machines comes to mind.)