I am prototyping a product with hybrid step motors from Pacific Scientific at the moment. I use two different sizes, with 4 phases (8 terminals) and the bigger one has phase current of 4.2A while the smaller one has around half of it. Full step angle is 1.8 degrees.
When we move to pilot production in few months, we would like to try out motors with same specifications from different manufacturers. The goal is to find cheaper motors of good quality that can be sourced in Europe, but probably produced in the Far East. Approvals and quality certificates are desirable, but as important will be having good references and many years of experience on the international markets.
Can you help us with giving us some good hints about step motor manufacturers that you probably already know and have good experience with?