Specialty Casters
Gate Casters
BBQ Pit & Smoker Casters
Keyed Drive Wheels
Drywall Cart Casters
Skid Wheels & Casters for RVs
Leveling Casters
Shopping Cart Wheels & Casters
Band Equipment Casters & Wheels
Low Profile Casters
Cart Wheels & Casters
Toolbox Caster Sets
Bakery Oven Rack Casters
Kitchen Prep Table Caster Sets
Wire Shelving Casters
Silent Glide Casters
Experience a new benchmark in caster technology with the Hamilton Spinfinity S-ZFFM-63SWC85. Designed for exceptional durability and ease, it promises a remarkable blend of innovation and performance.
Break away from the limitations of traditional kingpin designs. Our kingpinless configuration is a testament to lasting strength, ensuring your caster withstands rigorous tasks without the wear and tear commonly experienced in standard models. Plus, the maintenance-free promise assures you get long-term performance with minimal effort.
Featuring a 6x3" UltraGlide (85A) Triple Wheel with an attractive blue tread mounted on a sturdy aluminum core, this swivel caster guarantees unparalleled maneuverability. Whether you're moving heavy machinery or navigating through industrial terrains, the UltraGlide promises a smooth experience.
Integrated with 3/4" sealed precision ball bearings, the Hamilton Spinfinity S-ZFFM-63SWC85 ensures a friction-free, smooth ride. These bearings are meticulously sealed to prevent dust and debris ingress, ensuring a consistent performance for years.
Trust the Hamilton Spinfinity S-ZFFM-63SWC85 Swivel Caster for a mobility solution that's both efficient and durable.
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
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.
The Hamilton Spinfinity S-ZFFM-63SWC85 Swivel Caster boasts a unique kingpinless design, ensuring an extended lifespan by eliminating the typical wear and tear experienced in conventional models.
With an emphasis on hassle-free utility, this swivel caster requires minimal upkeep. Its maintenance-free feature promises enduring performance, letting you focus more on tasks at hand.
Embedded with a 6x3" UltraGlide (85A) Triple Wheel, it guarantees top-tier maneuverability. Its unmatched flexibility stems from the unique combination of an UltraGlide wheel fortified with a blue tread and an Aluminum core. This union not only offers effortless movement but also adds a touch of elegance to the caster's rugged design.
The inclusion of 3/4" sealed precision ball bearings ensures a friction-free, seamless ride. These bearings, apart from offering smooth transitions, also act as a protective shield against dust and external elements, ensuring consistent and undisturbed performance.
The Hamilton Spinfinity caster is not just about strength and durability. With reduced friction from its precision bearings, it ensures optimal energy utilization, translating into cost savings in the long run. Additionally, its user-friendly design ensures effortless operations, catering to both professionals and novices alike.
Every aspect of the Hamilton Spinfinity caster speaks volumes about its robustness. Crafted meticulously to endure even the most demanding of settings, it promises longevity and unparalleled performance.
This Hamilton S-ZFFM-63SWC85 6"x3" UltraGlide Swivel Kingpinless Caster – 3000 lb is rated to 3000 lbs per caster. Size a set by dividing the total load by the number of casters, and for uneven floors assume 3 of 4 casters carry the load. Keep continuous-use loads within about 75-80% of the rating.
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 Swivel caster. Swivel casters rotate 360 degrees for full maneuverability. 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).
Application guidance for load margin, wheel materials, and swivel construction. Confirm ratings against your duty cycle, floor, and temperature before final spec.
Start with total system weight (payload + structure + fixtures), divide by casters that actually share the load, and keep continuous working load per caster at or below roughly 75% of catalog capacity (~25% margin). Heavy-duty kingpinless frames are often used on uneven floors, docks, and towed trains where dynamic load transfer is common — do not assume perfect four-caster share. If impact, drop-offs, or shock loading is expected, treat the margin as a floor, not a stretch goal, and confirm capacity at the wheel diameter and tread you select on this PDP. Dynamic and side loads are separate from static catalog ratings; call out towing or AGV duty when you quote so we can sanity-check the configuration.
Stay with polyurethane when floors are relatively smooth, temperatures stay inside the PU service window, and you want floor protection plus rollability. Move to phenolic, glass-filled nylon, or other high-temp / high-hardness options when heat, certain chemicals, or very high point loads push past what standard PU can sustain. Kingpinless construction solves swivel durability under thrust; it does not raise the wheel’s temperature or chemical limit. Use the wheel material and temperature fields on this product (and sibling SKUs) to match the environment — heat duty and side-thrust duty are independent selection axes.
Kingpin swivels concentrate clamping and much of the axial stack through one pin. Towing hitches, AGV corrections, and side scrub introduce lateral and moment loads that work that pin and the race faces harder than hand-pushed carts. Typical early wear modes include kingpin stretch or hole elongation, race brinelling, and increasing swivel play. Kingpinless designs replace that single-pin stack with a machined or forged raceway that carries thrust through the race path, which is why they are the usual spec for powered towing and higher side-load industrial carts. Pair kingpinless swivels with a wheel and bearing package rated for the same duty — the swivel upgrade alone does not fix an undersized tread or bearing.
$638.00
| Identification | |
| Brand | Hamilton |
| Dimensions & Mounting | |
| Wheel Diameter | 6" |
| Wheel Tread Width | 3" |
| Mount Style | Plate |
| Rig Type | Swivel |
| Load & Performance | |
| Wheel Capacity | 3000 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Polyurethane |
| Wheel Core Material | Aluminum |
| Frame Material | Zinc Plated Steel |
6" x 3" Polyurethane Steel Swivel Caster – 3000 lb | CasterHQ
6" x 3" · 3000 lbs
$375
Hamilton 6" x 2-1/2" DuraGlide Polyurethane Rigid Caster – 3000 lb | CasterHQ
6" x 3" · 3000 lbs
$307
Hamilton 6" x 2-1/2" DuraGlide Swivel Caster – 3000 lb | CasterHQ
6" x 3" · 3000 lbs
$438
View all 6″ 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 within the same duty class, all in stock.
| Casters (in stock) | Load capacity | Wheel | Type | Overall height | Price | |
|---|---|---|---|---|---|---|
| 2500 lbsLighter duty | 6" × 3"Ductile Iron | Swivel | — | $95.00 | View → | |
| 2500 lbsLighter duty | 6" × 3"Polyurethane | Swivel | — | $95.00 | View → | |
| 3000 lbs | 6" × 3"Polyurethane | Swivel | — | $638.00 | Viewing | |
| 3000 lbsSame capacity | 6" × 3"Polyurethane | Swivel | 8" | $375.00 | View → | |
| 3000 lbsSame capacity | 6" × 3"Cast Iron | Rigid | — | $307.00 | View → |
