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HAMILTON

Hamilton 21" Pneumatic Rigid Caster – 1-1/4" Roller Bearing | CasterHQ

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  • Purchase orders accepted for approved accounts
  • Net 30 terms for qualified businesses
  • ACH, credit card, and tax-exempt ordering
  • Bulk and contract pricing on fleet quantities
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Product Overview
At a glance
MountPlate
TypeRigid
Temperature-20°F to 180°F
S-7521-SPRT Hamilton Ground Support Swivel Caster | Heavy Duty Pneumatic Tire

Hamilton Ground Support Rigid Caster - Model R-7521-SPRT

Elevate your ground support operations with the R-7521-SPRT Hamilton Rigid 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 R-7521-SPRT?

Hamilton is synonymous with quality and reliability. With the R-7521-SPRT Ground Support Rigid 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 R-7521-SPRT Rigid Caster to your fleet today and experience unparalleled performance and durability.

Key Features

Top 10 Features of the R-7521-SPRT Hamilton Rigid Caster

  • Brand Reputation: Crafted by Hamilton, synonymous with quality and reliability.
  • 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

Order processing

In stock. Orders placed before 12pm CT (Mon–Fri) typically ship the same or next business day from our Mansfield, TX warehouse.

Shipping method

Smaller orders ship parcel (UPS/FedEx Ground). Heavy or bulk quantities consolidate to LTL freight. The method and final cost are shown before payment, so there are no post-checkout adjustments.

Payment & procurement terms

Purchase orders — accepted from approved accounts
Net 30 terms — available on approved credit
ACH & all major cards — Visa, MC, Amex, Discover
Tax-exempt — submit your resale/exemption certificate

New to CasterHQ? Open an account or request terms and send your resale or tax-exemption certificate before ordering so it is applied at checkout.

Volume pricing & quotes

Quantity discounts apply automatically — no codes needed. For large, recurring, or custom requirements, request a bulk quote and our team will confirm pricing, lead time, and total landed freight upfront.

Returns & warranty

Stock items carry a 30-day return policy in unused, resalable condition. Made-to-order and custom items are non-returnable once production starts. All products carry the manufacturer's warranty against defects.

Typical transit times after shipment

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

Need an exact freight quote or blanket PO?

For pallet freight, scheduled releases, or blanket purchase orders, contact our team and we'll confirm total landed cost before you commit. Direct line: 844-439-4335.

Additional Information

R-7521-SPRT Hamilton Ground Support Rigid Caster: An In-depth Look

Designed to meet the highest standards of quality and performance, the Hamilton R-7521-SPRT Rigid 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.
  • 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 R-7521-SPRT Hamilton Ground Support Rigid 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.

Frequently Asked Questions

What wheel does this caster use?+

This caster runs a Rubber wheel. Rubber absorbs shock and protects floors, and runs quietly, which suits noise-sensitive and light-to-medium duty use.

What plate size and bolt pattern does it use?+

This caster uses a top-plate mount. Measure your existing mounting holes before ordering; if you are replacing casters, match the bolt pattern - most standard patterns interchange across brands.

Is this a swivel or rigid caster, and how does the brake work?+

This is a Rigid caster. Rigid casters track straight for directional stability. For most mobile equipment we recommend 2 swivel + 2 rigid, or 4 swivel with at least 2 brakes.

What temperature range can this caster handle?+

Rated for -20°F to 180°F. Operating outside the rated range can reduce wheel life and load capacity, so match it to your environment (wash-down, freezer, oven-adjacent, etc.).

What floors and applications is it best for?+

The Rubber wheel performs best on rough, uneven, or outdoor surfaces such as asphalt, gravel, and cracked concrete. For non-marking or clean-environment needs, ask us about matching tread options.

How do I order, and what are the terms?+

We accept purchase orders and offer Net 30 on approved accounts, ACH, and all major cards, plus tax-exempt ordering with a resale or exemption certificate. Volume discounts apply automatically; request a bulk quote for large or recurring orders. Stock items carry a 30-day return policy in unused condition (made-to-order items are non-returnable once production starts).

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

$2,242.00

Technical Specifications

Identification
Brand Hamilton
Dimensions & Mounting
Mount Style Plate
Rig Type Rigid
Load & Performance
Temp Range -20°F to 180°F
Brake Type No Brake
Materials & Finish
Wheel Material Rubber
Frame Material Zinc Plated Steel

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