Unit D39: New Holland 330 Lrg Sq Baler w 620s + New Holland T7.270 Row Crop Tractor w 520s Posted on January 17, 2019 (January 17, 2022) by Alex Barrie in Compaction Test Results Datasheets Plot Comments This is a good example of the baler being a lighter machine than the tractor, but having a higher stress in the topsoil due to the tire configuration.