Up to 350 lbs
Up to 7,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
Shock absorbing
Outdoor / rough terrain
View All Specialty Casters
Browse all specialty caster types
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 Overview:
Introducing the R-ZFFM-83EGB Hamilton Spinfinity, the pinnacle of heavy-duty rigid casters. Designed with the user in mind, this rigid caster guarantees maintenance-free operation, ensuring you get the best value for your money.
The R-ZFFM-83EGB Hamilton Spinfinity is not just another swivel caster. Its maintenance-free kingpinless design makes it the first choice for professionals looking for reliable and long-lasting casters. Whether it's industrial machinery, warehouse trolleys, or heavy furniture, trust this Hamilton product to deliver unmatched performance.
When it comes to mobility solutions, Hamilton stands out as a leader. With the Spinfinity series, they've raised the bar, offering a product that's both user-friendly and optimized for heavy-duty operations. Don't settle for less; choose Spinfinity for peace of mind.
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
Because of its size and weight, this item typically ships LTL freight on a pallet. Smaller add-on items may ship parcel. Freight cost is calculated by destination and shown before payment, or quoted for large orders.
Payment & procurement terms
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.
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.
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.
For professionals seeking a robust mobility solution that offers longevity, reliability, and high-end performance, the R-ZFFM-83EGB Hamilton Spinfinity Rigid Caster emerges as a top contender. Here’s an in-depth look at this rigid caster.
Time is money, and regular maintenance checks can disrupt workflow. With the Hamilton Spinfinity, you can set your worries aside. Its design ensures a maintenance-free experience, translating to fewer operational disruptions and more productivity.
Size does matter, especially when it comes to ensuring stability in movement. The 8" x 3" Ergo-Glide XT wheel offers a perfect balance between size and functionality. The wheel material guarantees durability, while its design ensures a smooth glide, even under heavy loads.
The 3/4" sealed precision ball bearings are a testament to Hamilton's commitment to quality. These bearings ensure that the caster swivels effortlessly, reduces friction, and lasts for a long time, even under rigorous use.
With Hamilton's trusted reputation in mobility solutions and the cutting-edge features of the Spinfinity series, it's clear that the R-ZFFM-83EGB is not just another rigid caster. It's a game-changer in the world of heavy-duty operations.
This caster runs a Polyurethane wheel with a 3" tread width. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
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.
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.
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.).
The Polyurethane wheel performs best on smooth to semi-smooth floors including sealed concrete, tile, and epoxy. For non-marking or clean-environment needs, ask us about matching tread options.
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).
$406.00
| Identification | |
| Brand | Hamilton |
| Dimensions & Mounting | |
| Wheel Diameter | 8" |
| Wheel Tread Width | 3" |
| Mount Style | Plate |
| Rig Type | Rigid |
| Load & Performance | |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Polyurethane |
| Frame Material | Zinc Plated Steel |
Hamilton 8" x 3" Superlast Poly Swivel Kingpinless Caster | CasterHQ
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Hamilton 8" x 3" UltraGlide Triple Wheel Swivel Caster – 3/4" Ball Bearing | CasterHQ
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8" x 3" Foam Filled Rigid Flat Free Caster – 275 lb | CasterHQ
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View all 8′ x 3′ casters & wheels →
Your selection is highlighted. Every option shares its wheel size and mount; a Direct fit tag means the same mounting plate — a drop-in replacement. Step up or down in load rating, all in-stock.
| Casters (in stock) | Load capacity | Wheel | Type | Overall height | Price | |
|---|---|---|---|---|---|---|
| — | 8" × 3"Polyurethane | Rigid | — | $406.00 | Viewing | |
| 275 lbsHeavier duty | 8" × 3"Polyurethane | Rigid | 9-3/4" | $101.00 | View → | |
| 275 lbsHeavier duty | 8" × 3"Polyurethane | Swivel | 9-3/4" | $74.00 | View → | |
| 275 lbsHeavier duty | 8" × 3" | Swivel | 9-3/4" | $110.00 | View → | |
| 2500 lbsHeavier duty | 8" × 3"Polyurethane | Rigid | 10-1/8" | $117.00 | View → |





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