Cast Iron Wheels

Cast iron replacement wheels are available with load ratings up to 40,000 lbs per wheel in the largest diameters. Standard industrial sizes commonly range from 1,000 to 15,000 lbs per wheel. Always verify that your caster fork and mounting hardware match the wheel's load rating.

Cast iron wheels handle continuous operating temperatures up to approximately 800 degrees Fahrenheit, with some formulations rated even higher. The bearing type and lubricant are typically the limiting factors. For the highest temperature applications, use high-temperature grease or dry sintered bronze bushings.

Cast iron wheels will gradually wear, crack, and damage concrete floors under extreme loads, especially during turns and over floor joints. In foundries and heavy manufacturing facilities, this wear is generally accepted as part of the operating environment. For floor-sensitive areas, consider polyurethane-on-iron wheels that add a protective tread layer.

Cast iron wheels offer higher load capacities in larger sizes and better vibration damping due to the material's natural damping properties. Steel wheels are typically lighter for a given size, resist impact damage better, and are available in a wider range of smaller sizes. For extreme loads above 10,000 lbs per wheel, cast iron is usually the preferred choice.