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The Kingpinless Heavy Duty 40 Series - SIRIUS Heavy Duty Donut Polyurethane on Aluminum Swivel Caster is engineered for maximum strength and performance. With an impressive 2000 lb capacity per caster, this product is designed to handle even the most demanding industrial applications. The 8" x 2" wheel size offers optimal stability, making it the perfect choice for heavy machinery and equipment that require superior mobility and durability.
Built with a heavy-duty polyurethane tread on an aluminum hub, the SIRIUS caster provides exceptional wear resistance and is capable of withstanding harsh environments. Its donut-shaped design enhances durability, reducing the wear and tear typically seen in other casters. Whether you're moving large equipment in a factory or transporting goods in a warehouse, the SIRIUS caster ensures smooth and reliable operation.
With customizable options, you can choose from a variety of top plate sizes to ensure a perfect fit for your specific needs. Additionally, select the type of bearing that suits your application—whether it's precision ball bearings for smoother operation or an alternative bearing type to meet specific demands. The versatility and adaptability of the Kingpinless Heavy Duty 40 Series caster make it an excellent investment for businesses looking to optimize their mobility solutions.
Designed to meet the rigorous demands of industries such as manufacturing, shipping, and logistics, this caster is built to last. The Kingpinless Heavy Duty 40 Series offers a high-performance solution that ensures reliability and safety in your operations. Upgrade your equipment handling with the trusted quality of Kingpinless casters today.
Enhance the performance of your operations with the Kingpinless Heavy Duty 40 Series casters. Choose the right top plate size and bearing option for your needs, and experience the strength and reliability of this heavy-duty caster solution.
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.
The Durastar Heavy Duty 40 Series SIRIUS caster is engineered to provide superior strength, performance, and longevity in the most demanding environments. Designed to handle loads of up to 2000 lbs per caster, it is the ideal solution for heavy machinery, industrial applications, and equipment requiring smooth and reliable mobility. Whether you're in a factory, warehouse, or other high-demand settings, the SIRIUS caster will ensure your equipment moves effortlessly and safely.
Constructed with a heavy-duty polyurethane tread mounted on a durable aluminum hub, this caster offers remarkable wear resistance and durability. The combination of these materials ensures a long-lasting, high-performance solution that reduces the frequency of maintenance and replacement. The donut-shaped design further enhances the caster’s durability, providing consistent, smooth rolling even in harsh environments.
The 8" x 2" wheel size provides the perfect balance between stability and mobility, offering enough surface area to support heavy loads while ensuring efficient movement in tight spaces. The caster’s design is focused on minimizing user strain, offering an easy-to-use, ergonomically sound solution for your equipment handling needs.
Choose from a variety of top plate sizes to ensure a seamless fit with your equipment. This flexibility allows you to customize your caster solution to match the specific needs of your application, whether it's for large machinery or smaller equipment. Additionally, the option to select between different bearing types (such as precision ball bearings) allows you to optimize the caster for even smoother performance.
The Durastar Heavy Duty 40 Series SIRIUS caster is perfect for a wide range of applications, including:
Enhance your operational efficiency and improve mobility with the Durastar Heavy Duty 40 Series SIRIUS caster. Engineered for reliability, performance, and strength, this caster offers the perfect solution for demanding industries that require long-lasting, high-performance equipment. Trust in Durastar’s commitment to excellence and elevate your equipment handling with the SIRIUS caster today.
This 8" x 2" Polyurethane on Aluminum Swivel Kingpinless Caster – 2000 lb · Model 40-S-820-DUA is rated to 2000 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" x 4-1/2", 4-1/2" x 6-1/4" plate. 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 -40°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.
The overall height (floor to top of plate or stem) is 9-1/2". 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.
$184.00
| Identification | |
|---|---|
| Part Number / SKU | 40-S-820-DUA |
| Product Series | Durastar 40 Series |
| Core | |
| Load Capacity | 2000 lbs |
| Wheel Diameter | 8" |
| Wheel Width | 2" |
| Floor to top of mounting plate (or stem shoulder).Overall Height (OAH)Floor to top of mounting plate (or stem shoulder). | 9-1/2" |
| Rig Type | Swivel |
| Brake | No Brake |
| Distance from swivel centerline to the outer edge of the wheel when turned.Swivel RadiusDistance from swivel centerline to the outer edge of the wheel when turned. | 6-3/4" |
| Swivel Construction | Kingpinless |
| Mounting | |
| Mount Style | Plate |
| Plate Size | 4" x 4-1/2", 4-1/2" x 6-1/4" |
| Wheel | |
| Wheel Material | Polyurethane |
| Construction | |
| Frame / Finish | Zinc Plated Steel |
| Temperature Range | -40°F to 180°F |
Drag to rotate. Select a label (OAH, Plate, BHP, Dia, Width) for its dimensioned drawing view; Esc or Back to 3D returns. Double-click or Reset view to recenter. Values from manufacturer specs; series geometry for the 2" tread plate caster family.
Series geometry, reference only. Verify critical dims against the spec table.
Free for design use. Redistribution or resale prohibited.
Drag to rotate. Select a label (OAH, Plate, BHP, Dia, Width) for its dimensioned drawing view; Esc or Back to 3D returns. Double-click or Reset view to recenter. Values from manufacturer specs; series geometry for the 2" tread plate caster family.
Series geometry, reference only. Verify critical dims against the spec table.
Free for design use. Redistribution or resale prohibited.
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 | |
|---|---|---|---|---|---|---|
| 1400 lbsLighter duty | 8" × 2"Phenolic | Swivel | 9-1/2" | $38.00 | View → | |
| 1500 lbsLighter duty | 8" × 2"Ductile Iron | Swivel | 9-1/2" | $89.00 | View → | |
| 2000 lbs | 8" × 2"Polyurethane | Swivel | 9-1/2" | $184.00 | Viewing | |
| 4000 lbsHeavier duty | 8" × 2"Phenolic | Swivel with Brake, Rigid + brake | 9-1/2" | $132.00 | View → | |
| 4000 lbsHeavier duty | 8" × 2"Phenolic | Swivel | 9-1/2" | $134.00 | View → |
