The maximum supporting weight for the MB-600 Universal Mobile Base is 600 lbs.
Product page:
https://www.harveywoodworking.com/products/mb-600-universal-mobile-base-no-board
For the MB-600 instruction manual, please refer to the link below:
https://harveymachinery.com/wp-content/uploads/2022/02/MB-600-Instruction-Manual.pdf