Twin cast iron wheels, fitted with shielded bearings
Swivel types have a taper roller bearing and single thrust bearing with grease nipple and head seal
Polyurethane tyre
Wheel series Z

Polyurethane tyred wheels have high tear strength and abrasion resistance which gives them a life of up to 10 times that of rubber under similar operating conditions. Polyurethane is able to carry loads approaching that of cast iron. Polyurethane has a lower tractive resistance than rubber for the same load so is better for manual handling of very heavy loads. Polyurethane is not affected by greases and mineral oils.