SERIE A 04 - Solid black rubber tyre, hardness 82±4 Sh. A. - Zinc-plated and riveted sheet steel wheel centre. - Type of bearing: standard roller bearing; polyamide self-lubricating hub with plain bearing or ball bearings available on request. - Temperature range: -20ƒC — +60ƒC. - Maximum working speed 4 KPH. - Standard housings M80A.