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
Custom made to order. All sales final.
Each Hamilton product is custom manufactured for your order and ships in about 4-6 weeks. Please confirm all specs before checkout, since made-to-order items aren't eligible for returns, exchanges or refunds. Need help? Call 844-439-4335 or email info@casterhq.com and we'll verify fit for you.
The S-ZFHS-6SPB Hamilton Spinfinity Swivel Caster is the embodiment of top-quality, durable, and reliable caster technology. Specifically designed to ensure seamless operation, this swivel caster features a kingpinless design that eliminates the need for regular maintenance - a true time and cost saver.
The stand-out feature of this particular model is the 6" x 2" Ergo-Glide wheel (80A). This wheel not only boosts the caster's load-bearing capacity but also ensures smooth and controlled movement across various surfaces, making it an ideal choice for an array of heavy-duty applications.
To further enhance the caster's robustness and longevity, it is fitted with 3/4" sealed precision ball bearings. These bearings ensure consistent, friction-free operation while minimizing the need for frequent lubrication or replacement.
Make the S-ZFHS-6SPB Hamilton Spinfinity Swivel Caster your first choice for uncompromising performance, durability, and maneuverability. Built to last, it's the perfect asset for businesses seeking efficient and dependable material handling solutions.
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-ZFHS-6SPB is a breakthrough in the world of industrial casters. Its unique kingpinless design ensures an improved shock absorption, providing smoother rides and extending the lifespan of the caster. Unlike traditional casters, this maintenance-free model eliminates the need for regular upkeep, saving you both time and effort.
The caster features a 6-inch Ergo-Glide wheel with an 80A durometer rating. This balance between hardness and elasticity is the key to its versatility - the wheel is tough enough to resist wear and tear, but flexible enough to roll smoothly across a variety of surfaces. It also boasts 3/4" sealed precision ball bearings that not only improve rollability but also significantly reduce maintenance needs.
The S-ZFHS-6SPB model is a part of the trusted Hamilton Spinfinity series, known for high-performance casters that can withstand demanding applications. Each product in this line is recognized for its durable construction, capable of handling heavy-duty usage, and this model is no exception.
In addition to being reliable, the Hamilton Spinfinity S-ZFHS-6SPB Swivel Caster is designed with the user in mind. It offers easy swivel action for better maneuverability, especially in tight spaces. This feature, combined with its considerable load capacity, makes it an ideal choice for various industrial environments. Moreover, it is simple to install and operate, further emphasizing user-friendliness.
This Hamilton S-ZFHS-6SPB 6" x 2" Ergo-Glide Swivel Kingpinless Caster – 960 lb is rated to 960 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 2" tread width. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
This caster uses a top-plate mount with a 4-1/2" x 6-1/2" plate and a 2-7/16" x 4-15/16" and 3-3/8" x 5-1/4" bolt pattern. 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 -5°F to 160°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.
The overall height (floor to top of plate or stem) is 7-3/4". Account for it when checking equipment clearance, dock height, and ergonomic working height.
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.
$318.00
| Identification | |
|---|---|
| Part Number / SKU | S-ZFHS-6SPB |
| Replacement Wheel Part No | W-620-SPB-1/2 |
| Core | |
| Load Capacity | 960 lbs |
| Wheel Diameter | 6" |
| Wheel Width | 2" |
| Floor to top of mounting plate (or stem shoulder).Overall Height (OAH)Floor to top of mounting plate (or stem shoulder). | 7-3/4" |
| Rig Type | Swivel |
| Brake | No Brake |
| Horizontal distance from the swivel centerline (kingpin) to the wheel axle.Swivel Lead (Offset)Horizontal distance from the swivel centerline (kingpin) to the wheel axle. | 2" |
| Swivel Construction | Kingpinless |
| Mounting | |
| Mount Style | Plate |
| Plate Size | 4-1/2" x 6-1/2" |
| Center-to-center spacing of the top-plate mounting holes.Bolt Hole Pattern (BHP)Center-to-center spacing of the top-plate mounting holes. | 2-7/16" x 4-15/16" and 3-3/8" x 5-1/4" |
| Recommended Mounting Bolt | 1/2" |
| Wheel | |
| Wheel Material | Polyurethane |
| Wheel Core Material | Cast Iron |
| Wheel Color | Blue Poly on Gray Center |
| Bearing Type | Precision Sealed Ball Bearing |
| Construction | |
| Frame / Finish | Crimson Powder |
| Temperature Range | -5°F to 160°F |
| Unit Weight | 16 lbs |
| Compliance | |
| Buy American | Yes |
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 | |
|---|---|---|---|---|---|---|
| 900 lbsLighter duty | 6" × 2"Polyurethane | Rigid | 7-1/2" | $23.00 | View → | |
| 900 lbsLighter duty | 6" × 2"Polyurethane | Swivel | 7-1/2" | $70.00 | View → | |
| 960 lbs | 6" × 2"Polyurethane | Swivel | 7-3/4" | $318.00 | Viewing | |
| 1000 lbsHeavier duty | 6" × 2"Blue Solid Polyurethane | — | 7-1/2" | $182.00 | View → | |
| 1200 lbsHeavier duty | 6" × 2"Semi-Steel | Rigid | 7-1/2" | $40.00 | View → |
