Heavy Duty PU 3 TONS Caster Medium Duty Casters About Heavy-duty Iron caster Cast Iron Industrial Castor Wheels is cast iron. The cast iron withgood fluidity, casting surface is smooth.Cost is relatively low, In addition,cast iron wear, oil storage capacity is higher, easy to do sets.Cast iron with good compressive strength and shape-keeping ability. Rotation Caster Product parameters Wheel Material Wheel Diameter (mm) Wheel Width (mm) Height (mm) Load capacity (kg) Bearing Plate size and installation hole spacing (mm) PU+Iron 150 75 263 3000 6206 Plate size: 177*135 Instakkation hole: 140*105 200 75 301 3000 6206 250 75 339 3000 6206 300 75 393 3000 6206 Service 1. According to your detail inquiry of different caster wheels, we will give our price within 12 hours, whatever is weekend. 2. According to your requests or minds, give our price or provide samples to you for testing. 3. Provide free design for you according to your actual need. 4. Although we only do business on caster wheels, we could help our clients to find the related products suppliers in China mainland. 5.Wecanreceivetheorderwhateverquantitydoyouneed. 6. Under normal conditions, Three years all products warranty.