ISO 9001:2015 Quality Manufacturing · ANSI ICWM Performance Tested
98.7% On-Time Ship Rate Across All Orders
200,000+ Orders Fulfilled for OEM & MRO Teams Nationwide
100+ Years of Combined Caster Industry Experience
Automatic Bulk Pricing | OEM & MRO Volume Discounts Applied at Checkout
Up to 350 lbs · Light Duty Applications
Up to 7,200 lbs · Industrial Duty
Up to 17,500 lbs · Heavy Industrial
Up to 40,000 lbs · Extreme Load Applications
Up to 40,000 lbs · Increased Maneuverability
Up to 3,100 lbs · Industrial Shock Absorbing
Up to 3,200 lbs - Corrosion Resistant
Stainless Steel
Up to 8,400 lbs.
Explore All Specialty Caster Applications
From Everyday Use to Niche Solutions
Plate dimensions shown are overall mounting plate size.
When replacing existing casters, select the closest plate size and verify bolt-hole compatibility.
BHP = Bolt Hole Pattern, shown under each plate.
The Durastar FX | Formula XS Rubber 3-1/2" Wheel is engineered to deliver quiet, smooth mobility in a compact and high-performance design. Featuring Formula XS rubber, this wheel offers exceptional floor protection and traction without leaving marks, making it a smart choice for environments where cleanliness and safety matter.
Designed with durability in mind, these wheels resist common chemicals and oils, ensuring long-lasting performance in industrial, medical, institutional, and food service settings. The advanced rubber tread absorbs shock and vibration, making transport smoother and more comfortable—even across uneven surfaces.
Whether you're upgrading mobile workstations, equipment carts, or utility racks, the Durastar FX 3-1/2" Wheel delivers reliable functionality, noise reduction, and superior maneuverability. Trust in Durastar’s reputation for quality and innovation when precision and protection matter most.
Enhance your mobility systems with the Formula XS 3-1/2" Rubber Wheel—designed for maximum floor protection, ultra-quiet rolling, and dependable durability across a variety of applications.
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
All tools + dedicated pages (best for sharing and EEAT). Open hub
Load Calculator (dedicated)
Share this page when discussing load rating per caster. Open load tool
Wheel Diameter Calculator
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Failure Diagnosis Tool
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Designed for engineers, manufacturers, and material handling professionals