Semi-steel (gray iron) caster wheels are fully metal wheels intended for light-to-medium duty service on smooth, clean concrete floors where impact and shock loading are not present.
Semi-steel wheels are used where a durable all-metal wheel is required and operating conditions are controlled. They perform best on smooth concrete without debris, floor transitions, or shock loading.
Ductile (forged) steel wheels should be specified for applications involving impact, shock, uneven floors, abuse, or powered towing systems. Ductile steel offers improved strength and resistance to cracking under load.
Are semi-steel wheels suitable for towing?
No. Powered or continuous towing typically requires ductile steel or more impact-tolerant wheel materials.
Do semi-steel wheels require floor protection?
Yes. They should be used only on smooth, clean floors to reduce surface damage and noise.
Why choose semi-steel over ductile steel?
Cost efficiency in controlled environments where impact resistance is not required.
These calculators apply to any caster application—even if you’re browsing a different category. Use them to estimate load rating per caster, select wheel material, and estimate push/pull force. Expand any tool for full analysis + a share-ready spec line.
Engineering Tools Hub
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Load Calculator (dedicated)
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Wheel Diameter Calculator
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Failure Diagnosis Tool
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