Rubber Trolley Wheels

As the diameter of wheel increases, the pushing pulling efforts are reduced proportionately. Try to use higher diameter wheels as far as possible.Floor conditions & bearing in the wheel remaining the same, pushing pulling efforts depends very much on the material of the wheel. Rubber being soft, rubber wheels get compressed under load & due to high coefficient of friction needs more pulling pushing efforts. As against this, cast iron being very hard & low coefficient of friction, pushing pulling efforts are minimum n cast of cast iron wheel.
Type of Bearing used in wheel :- If we consider the pushing pulling efforts required are moderate for wheels with PLB & SIB, pushing pulling efforts are less for wheels with NRB & minimum for wheels with BB. However periodic cleaning & greasing of bearings must be ensured.Rubber & PU wheels are soft & have low noise level. PP, NYL & UHMW-PE wheels have comparatively higher noise level. CI wheels have very high noise level. If very low noise level is essential, you may check for Rubber or PU wheels with higher diameter.