Series 31 wheels are made of high quality white polyamide and are designed to move loads weighing from 600 to 1500 kg. They are used in the construction, machine-building, glass industries, as well as for "economical" (due to the solidity of the wheel - it is cheaper than analogues on a tire) transportation of heavy loads. Usage temperature -30 + 80 ° C. Ball bearings on the wheel axle provide ease of movement and stability of loaded equipment. The swivel bracket assembly is equipped with a grease nipple. Of the obvious disadvantages is noise when transporting unloaded equipment. The wheel is resistant to shock loads and abrasive wear. Reinforced bracket type "HARD" - for intensive regular movements. The bracket is galvanized for a long service life.