Many pieces wheels in a line as a whole
We oftern use many pieces wheels in a linne as a whole , Each piece wheels may withstand average greater weight. The wheels can not be damaged easily.
If you want to buy this model machine, your will pay attention that your tanks have enough surface to be in touch with the wheels width. Otherwise ,the flange or rib will damage the wheels .
SAR type with 3 units PU wheels
WR model with 3 pieces PU wheel