Description Model 30 Swivel Casters are a step up from model G15 swivel casters in that it features larger swivel, wider wheels, and wheel bearings. The precision machined swivel provides unmatched performance on both manually moved and mechanically powered machinery. The metal frames are zinc plated for rust protection, and there are lubrication fittings for all moveable parts. Popular options customers like to include is a face contact wheel brake to lock the wheels and a hand operated swivel lock that converts a swivel caster into a rigid caster for direct line travel. Capacity up to 7,000 pounds per caster. Model 30 features a large swivel and wheel bearing which allows for heavy loads and more arduous service. Benefits include easier swiveling, reduced swivel vibration, and longer trouble free performance. Ideal for industrial oven and furnace carts, turbine handling, and nuclear facility equipment. Caster City manufactures this caster and it is also available in 304 Stainless Steel as the SS-30 for wet or corrosive applications. For more info and assistance placing an order, give us a call at 800-501-3808. Polyurethane is superior to rubber in resistance to grease, oil, cutting, chunking, and abrasive wear. These caster wheels come with green (PY) or red (PYR) polyurethane tread chemically bonded to an iron core. These wheels are designed for versatility and can be used on nearly any factory floor. The durometer of this polyurethane caster wheel is 90-95 Shore A and the temperature range is -20°F to 180°F. The primary benefit of a polyurethane wheel over the same size rubber wheel is increased capacity. Under ideal conditions, polyurethane caster wheels have a safe operating capacity of up to three times the capacity of the same size rubber wheel. On smooth floors, a polyurethane caster wheel rolls easier than the same size rubber caster wheel. When used at full capacity, polyurethane caster wheels are not easy rolling. The bonding agent securing the polyurethane tread to the iron center may be affected by certain chemicals, high impact, overloading, or heat buildup. These wheels support a variety of bearing types, including precision sealed ball bearings, roller bearings, or. Ideal for oil and gas equipment, refinery maintenance equipment, and boiler and pressure vessel transport. *This Model 30 Swivel Caster includes the Polyurethane on Iron Swivel Wheel. Shown in photo with the 8″ x 3″ wheel. For more information and help placing an order, give us a call at 800-501-3808.