Manufacturing and commercial businesses with large stamping presses or plastic injection molding machines often require dies to be moved. For example, when they need to change parts produced in a stamping press, the die will need to be removed, transported and stored. Often times, these dies are very heavy and great care must be take not to damage them. They are extremely expensive to build, repair or replace. Not to mention the down time that can be incurred while the repair or rebuild is completed. On the flip side die handlers are very expensive if purchased new. This means the used handlers are an excellent option. The trick is locating one. Frankly, there are only one or two used dealers in the US than have 90% of the market. The dealer with the most access is Affordable Machinery in Michigan.
Used die carts are easier to locate, however them must be towed or pushed. This means you can get them into tighter areas, but a forklift or some other tractor device will be needed.
Plastic injection molding machines also use dies and require die handlers. Some companies choose to rent them because the may not change them out very often. Others prefer to purchase them. They range from 10,000lbs to 200,000lb capacity. Popular brands are Elwell Parker, Autolift and Erikson. You will hear them referred to as die trucks or die handlers.
Other information: https://masllc.leadpages.net/useddiehandlersdietrucksforsale/