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Hamilton S-7521-SPRT 21" Pneumatic Swivel Caster – 1-1/4" Roller Bearing | CasterHQ

Volume discounts applied at checkout
  • 50-99 units: 5% Off
  • 100-199 units: 10% Off
  • 200+ units: 15% Off
Status: In Stock
Shipping Truck

Most in-stock items ship same or next business day. Shipping rates shown at checkout.

PRODUCT CODE: S-7521-SPRT

Technical Specs
Caster Specifications
Specification Value
Swivel or Rigid caster Swivel
Load Capacity (lbs.) @ 3 mph 4200
Wheel Diameter (in.) 21
Wheel Face (in.) 6
Overall Height (in.) 24
Swivel Offset (in.) 5
Mounting Plate (in.) 8 1/2 x 8 1/2
Bolt Hole 1 (in.) 7 x 7
Mounting Bolt (in.) 0.5
Caster Color/Finish Crimson Powder
Wheel Type HD Solid Pneumatic
Wheel Color/Finish Black Tire on White Rim
Bearing Type Tapered Roller
Replacement Wheel W-2160-SPRT-1-1/4
Wheel Material @ Tread Rubber
Shipping Weight (lbs.) 175
Caster Rig Type Integral Forged Kingpin
Tire Size 600 x 9
Product Overview
S-7521-SPRT Hamilton Ground Support Swivel Caster | Heavy Duty Pneumatic Tire

Hamilton Ground Support Swivel Caster - Model S-7521-SPRT

Elevate your ground support operations with the S-7521-SPRT Hamilton Swivel Caster. This premium-grade caster is tailor-made for the rigorous demands of aviation and heavy industry applications.

Key Features

  • 21-inch Heavy Duty Solid Pneumatic Tire: Ideal for smooth maneuverability on uneven terrains and ensures longevity.
  • 1-1/4-inch Tapered Roller Bearing: Guarantees smooth operation and can withstand high radial and axial loads.
  • Designed for optimal ground support: Crafted to perfection for aviation and heavy industrial tasks.
  • Durable construction: Ensures the caster stands up to the challenges of rigorous use.

Why Choose Hamilton's S-7521-SPRT?

Hamilton is synonymous with quality and reliability. With the S-7521-SPRT Ground Support Swivel Caster, you're not just purchasing a product, but a promise of performance. Whether you're in aviation or heavy industry, this caster is engineered to provide superior durability and ease of movement.

Upgrade Your Ground Support Equipment Today

Don't compromise on quality. Trust in Hamilton's legacy of excellence. Add the S-7521-SPRT Swivel Caster to your fleet today and experience unparalleled performance and durability.

Key Features

Top 10 Features of the S-7521-SPRT Hamilton Swivel Caster

  • Brand Reputation: Crafted by Hamilton, synonymous with quality and reliability.
  • Swivel Design: Ensures flexible and smooth maneuvering.
  • 21-inch Size: Large Heavy Duty Solid Pneumatic Tire for optimal movement on varied terrains.
  • 1-1/4-inch Bearing: Tapered Roller Bearing for enduring high radial and axial loads.
  • Durable Construction: Built to withstand rigorous ground support applications.
  • Aviation-Grade: Tailor-made for the specific needs of the aviation industry.
  • Optimal Ground Support: Engineered for best-in-class ground support tasks.
  • High Load Capacity: Suitable for heavy-duty industrial tasks.
  • Crimson Powder Finish: Elegant caster color ensuring durability and aesthetics.
  • Wheel Type: HD Solid Pneumatic for reliable and long-lasting performance.
Ordering & Shipping Information

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.

  • Flat-rate shipping by order size. Final shipping cost shown before payment.
  • No post-checkout shipping adjustments or re-billing.
  • Most orders ship from our Texas headquarters near Dallas.

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.

Typical transit times after shipment

Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas may take longer.

Made-to-order items (lead times)

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.

Need an exact freight quote for a large order?

Contact us before ordering and we’ll confirm total landed cost upfront. Contact us.

Additional Information

S-7521-SPRT Hamilton Ground Support Swivel Caster: An In-depth Look

Designed to meet the highest standards of quality and performance, the Hamilton S-7521-SPRT Swivel Caster is an exemplary product tailored for robust ground support operations.

Main Features and Benefits

  • Manufactured by Hamilton: A trusted name associated with top-notch quality and relentless reliability.
  • Swivel Design: Promises unparalleled flexibility and effortless maneuverability, making it easier to navigate in tight spaces.
  • 21-inch Heavy Duty Pneumatic Tire: This large tire ensures smooth motion across different terrains, especially suitable for uneven surfaces often encountered in ground support tasks.
  • 1-1/4-inch Tapered Roller Bearing: Designed to bear high radial and axial loads, this bearing ensures the caster's prolonged lifespan and smooth operation.

Extended Specifications

For those looking for a comprehensive understanding of this product, here's a deep dive into its specifications:

  • Wheel Face: 6 inches, providing a broad and stable surface for movement.
  • Overall Height: 24 inches, making it suitable for a range of ground support equipment.
  • Swivel Offset: 5 inches, ensuring the optimal balance between stability and swivel ease.
  • Mounting Plate Size: 8 1/2 x 8 1/2 inches, designed for secure attachment and maximum weight distribution.
  • Bolt Hole & Mounting Bolt: The caster comes with a 7x7 inch bolt hole and 0.5-inch mounting bolt, ensuring a firm and secure fit.
  • Caster Color & Finish: Elegant Crimson Powder, ensuring both durability and a sleek aesthetic.
  • Wheel Type & Color: HD Solid Pneumatic wheel with a contrasting Black Tire on a White Rim, offering durability while adding a touch of style.
  • Bearing Type: Tapered Roller, the gold standard for high-load applications.
  • Replacement Wheel Model: W-2160-SPRT-1-1/4, ensuring easy maintenance and long-term usability.
  • Tire Size & Material: 600 x 9 size with Rubber tread, promising long wear life and smooth movement.

Conclusion

In the realm of ground support equipment, the S-7521-SPRT Hamilton Ground Support Swivel Caster stands out as an unmatched blend of durability, functionality, and style. Whether you're in aviation or any heavy-duty industry, this caster promises top-tier performance that Hamilton has been renowned for.

Hamilton S-7521-SPRT 21
Hamilton S-7521-SPRT 21" Pneumatic Swivel Caster – 1-1/4" Roller Bearing | CasterHQ

$2,508.00

Technical Specifications:

Temp Range -20°F to 180°F
Wheel Material Rubber
Frame Material Zinc Plated Steel
Mount Style Plate
Rig Type Swivel
Brake Type No Brake
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