Up to 350 lbs
Up to 6,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
High-capacity loads
Shock absorbing
Corrosion resistant
Outdoor / rough terrain
OEM replacements
All measurements indicate the wheel diameter by the tread width.
The below capacity ranges indicate the working (dynamic) load that each caster will support. A safety factor should be included in your formula to determine your required load rating per caster.
W/(C-1)=R W is total weight needed to move. C is total number of casters required. R is ideal load rating, with safety factor built in. Divide the total load weight by one less caster than you will use to safely determine load rating.
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.
PRODUCT CODE: 91-S-630-RS-04
The Durastar Xtreme Heavy Duty 91 Series 6" x 3" Rubber on Steel Swivel Caster is built to tackle the toughest tasks. Designed with industrial strength in mind, this caster boasts a robust 750 lb load capacity, making it perfect for heavy-duty applications. Its rubber on steel construction ensures both durability and smooth operation, even on rough surfaces.
The 4-1/2" x 6-1/4" top plate offers versatile mounting options for a wide range of equipment, providing excellent stability and support. Whether you're outfitting industrial machinery or creating mobile workstations, this caster ensures seamless movement and reliable performance.
Engineered for efficiency, the swivel design offers superior maneuverability, allowing you to navigate tight spaces with ease. Trust the Durastar Xtreme Heavy Duty 91 Series to deliver exceptional performance, whether in manufacturing, warehouses, or other demanding settings.
Enhance the mobility of your equipment with the Durastar Xtreme Heavy Duty 91 Series swivel caster. Experience superior load capacity, durability, and maneuverability for your toughest tasks.
Transparent pricing
All pricing and quantity discounts are applied automatically. No promo codes required and no post-checkout price changes.
Upfront shipping costs
Shipping is calculated by order size and weight. Final shipping costs are shown before payment so there are no surprises.
Business-friendly ordering
We support bulk orders, repeat purchases, and fast quotes for larger or custom requirements.
Real support from product specialists
Need help confirming fit, compatibility, or application? Our team works directly with engineers, maintenance teams, and buyers every day.
Trusted by industrial and commercial customers
CasterHQ supplies casters and wheels for manufacturing, material handling, retail, and distribution environments nationwide.
When will my order ship?
In-stock items typically ship same or next business day. Weekend orders ship Monday or Tuesday unless stated otherwise.
Will shipping cost more at checkout?
Shipping is not free on most orders. Your final shipping cost is shown before payment.
Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas may take longer.
Some custom products (select Made in USA casters, keyway wheels, drive wheels) are built after purchase and ship on a longer lead time. When applicable, the ship-time estimate is shown on the product page.
Contact us before ordering and we’ll confirm total landed cost upfront. Contact us.
The Durastar Xtreme Heavy Duty 91 Series 6" x 3" Rubber on Steel Swivel Caster is engineered for performance in the most demanding industrial environments. Designed with a 750 lb load capacity, this heavy-duty caster provides the strength and durability needed for heavy equipment and machinery handling. The rubber on steel design offers a combination of smooth rolling action and exceptional resilience, making it ideal for use in warehouses, factories, and other high-traffic settings.
Thanks to its versatile 4-1/2" x 6-1/4" top plate, this caster can be easily mounted onto a wide range of equipment, providing flexibility for various applications. The swivel action enhances maneuverability, making it easier to navigate tight spaces and corners, while the rubber material absorbs shocks and reduces vibrations during use. Whether you need it for industrial machinery or mobile workstations, the Durastar Xtreme caster ensures optimal functionality and reliability.
The Durastar Xtreme Heavy Duty 91 Series Caster is versatile and can be used in a wide range of industrial and commercial applications, including:
When it comes to heavy-duty applications, Durastar Xtreme stands out as a trusted brand known for producing high-quality mobility solutions. With a commitment to excellence and durability, Durastar casters are designed to withstand the toughest environments while offering superior performance. The 91 Series offers reliability, ease of installation, and long-lasting functionality for any industrial or commercial need.
Whether you are upgrading your existing equipment or outfitting new machinery, the Durastar Xtreme Heavy Duty 91 Series Swivel Caster provides the perfect blend of strength, stability, and maneuverability, ensuring a smooth and efficient experience in your daily operations.
With Durastar Xtreme casters, you are investing in mobility solutions backed by a brand trusted by industry professionals. Our products are rigorously tested for performance and durability to meet the highest standards. We are committed to providing exceptional customer service and ensuring that your experience with our casters enhances your business operations.
$178.00
| Wheel Diameter | 6" |
| Wheel Tread Width | 3" |
| Overall Height | 7-1/2" |
| Wheel Capacity | 750 lbs |
| Temp Range | -20°F to 180°F |
| Wheel Material | Rubber |
| Frame Material | Zinc Plated Steel |
| Bolt Hole Pattern | 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4" |
| Mount Style | Plate |
| Plate Size | 4-1/2" x 6-1/4" |
| Rig Type | Swivel |
| Brake Type | No Brake |
Designed for engineers, manufacturers, and material handling professionals
