Frame on seven-standard model
The frame is constructed with a 102-mm x 152-mm x 10-mm (4-in. x 6-in. x 0.375-in.) cross tube on three-, four-, five-, and seven-standard machines and 152-mm x 152-mm x 10-mm (6-in. x 6-in. x 0.375-in.) cross tube on nine-standard models where the hitch-mounting components are welded for maximum strength.
Truss tubes connect the cross tubes and are constructed with 127-mm x 127-mm x 13-mm (5-in. x 5-in. x 0.5-in.) steel tubing.
Welded together into one assembly, the frame is designed to handle the most severe operating conditions.
The mainframe is 4.06-m (160-in.) wide and is the same whether there are five shanks on 762-mm (30-in.) spacings. Frame extensions make this task possible and make configurations easier to adjust.