What lifting capacities are available?
Three capacities: 1.5 ton, 3 ton, and 5 ton. The MMJ-3 is rated 1.5 tons at $248.29, the MMJ-6 is rated 3 tons at $271.89, and the MMJ-10 is rated 5 tons at $348.17. Note that the model number does not match the tonnage, so order by the rated capacity rather than by the number in the model code.
How do I choose between the three models?
Match the jack to the weight it will actually carry at the lifting point, not to the total weight of the machine. Load is rarely split evenly across corners or edges, so weigh or calculate the share each jack takes and choose a model rated above that figure. The MMJ-10, at 5 tons, is the highest capacity in this range.
Do these jacks need hydraulics or an electrical supply?
No. These are mechanical machinery jacks, operated by hand rather than by a hydraulic pump or a powered connection. There is no fluid to top up, bleed, or leak onto a shop floor, and no cord or air line to route around the machine being lifted. The product data lists no power requirement for any of the three models.
Are these covered by a warranty, and where are they made?
Yes. All three MMJ models carry a 1-Year Limited warranty and are made in the USA by Vestil Manufacturing. The product data states the warranty length only, not what the limited coverage includes or excludes. If warranty scope affects your decision, request Vestil's written warranty statement before ordering.
What maintenance and inspection do they need?
Keep the lifting mechanism clean, lubricated, and free of grit, and inspect the jack before each use for cracks, bending, or a mechanism that binds. Jacks fall under ASME's B30.1 standard for jacks and lifting devices, which calls for inspection before use and removal from service when damage is found. Follow the instructions supplied with the jack.
When are these not the right choice?
They are not the right choice when a single jack would carry more than 5 tons, since the MMJ-10 is the largest of the three models offered. They also do not suit applications needing powered, synchronized, or remote lifting. For documented compatibility with a specific machine, check the manufacturer's requirements before ordering.
