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The Kingpinless Heavy Duty 40 Series 4" x 2" Polyurethane on Steel Swivel Caster is engineered for demanding environments. With a robust 700 lb load capacity, this caster offers the perfect combination of strength and reliability for your toughest mobility needs.
Designed with polyurethane on steel, these casters provide excellent floor protection and smooth rolling even in rough conditions. Whether you're moving heavy equipment, machinery, or large objects, the Kingpinless 40 Series ensures minimal wear and tear on both the caster and the floor.
Choose from a variety of top plate sizes and bearing options to customize your caster setup for maximum efficiency. The swivel caster design allows for easy maneuverability, ensuring your operations run smoothly and efficiently. Its versatile nature makes it ideal for applications in warehouses, factories, and other industrial settings where heavy-duty performance is crucial.
Whether you're outfitting carts, racks, or other heavy-duty equipment, the Kingpinless Heavy Duty 40 Series caster offers a reliable solution. Its high weight capacity and durable materials make it a top choice for businesses seeking performance and longevity. Upgrade your mobility solutions today with this durable and customizable caster.
Equip your business with the Kingpinless Heavy Duty 40 Series caster. Designed for ultimate durability and performance, it's the perfect choice for businesses that need reliable and efficient mobility. Upgrade your equipment with ease and trust in the Kingpinless quality today.
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 Durastar Heavy Duty 40 Series 4" x 2" Polyurethane on Steel Swivel Caster is engineered to meet the needs of industrial and commercial environments that demand reliable, long-lasting performance. With a robust 700 lb capacity, this caster is ideal for heavy-duty applications, providing the perfect blend of durability, smooth movement, and floor protection.
With its combination of superior materials and thoughtful design, the Durastar Heavy Duty 40 Series caster is a top-tier choice for businesses that require mobility solutions capable of handling heavy-duty tasks. The durable polyurethane on steel construction offers superior wear resistance and floor protection, while the customizable top plate sizes and bearing options allow for tailored performance to suit various operational needs.
Whether you're moving equipment in a busy warehouse or need reliable mobility for industrial carts, this caster provides smooth operation and exceptional load-bearing capabilities. Its ability to protect floors and maintain smooth movement even in harsh conditions ensures your equipment operates efficiently, increasing overall productivity and reducing downtime.
Investing in the Durastar Heavy Duty 40 Series caster means investing in long-term durability, reliability, and superior performance, helping your business save on maintenance costs and improving operational efficiency.
The Durastar Heavy Duty 40 Series caster is designed for a wide range of industrial, commercial, and institutional applications, including:
Designed to withstand the harshest working conditions, the Durastar Heavy Duty 40 Series caster offers exceptional performance that lasts. Whether you need reliable mobility for factory machinery or hospital equipment, its durable materials and construction provide longevity, minimizing downtime and replacement costs. The robust polyurethane construction ensures the caster maintains its smooth rolling performance for an extended period, making it a reliable asset for any business.
Upgrade your operations with the Durastar Heavy Duty 40 Series 4" x 2" Polyurethane on Steel Swivel Caster. Engineered for performance, durability, and efficiency, it's the ideal solution for heavy-duty mobility needs. With customizable options and a design built to last, trust in the Durastar brand for your mobility solutions.
This 4" x 2" Polyurethane on Steel Swivel Kingpinless Caster – 700 lb is rated to 700 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 -45°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 5-5/8". 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.
$72.00
| Identification | |
|---|---|
| Part Number / SKU | 40-S-420-PU |
| Product Series | Durastar 40 Series |
| Core | |
| Load Capacity | 700 lbs |
| Wheel Diameter | 4" |
| Wheel Width | 2" |
| Floor to top of mounting plate (or stem shoulder).Overall Height (OAH)Floor to top of mounting plate (or stem shoulder). | 5-5/8" |
| 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. | 3-1/8" |
| 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 |
| Wheel Core Material | Steel |
| Construction | |
| Frame / Finish | Zinc Plated Steel |
| Temperature Range | -45°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 | |
|---|---|---|---|---|---|---|
| 400 lbsLighter duty | 4" × 2"Rubber | Swivel | 5-5/8" | $24.00 | View → | |
| 600 lbsLighter duty | 4" × 2"High Temp Phenolic | Swivel with Brake + brake | 5-5/8" | $265.00 | View → | |
| 700 lbs | 4" × 2"Polyurethane | Swivel | 5-5/8" | $72.00 | Viewing | |
| 700 lbsSame capacity | 4" × 2"Semi-Steel | Rigid | 5-5/8" | $38.00 | View → | |
| 700 lbsSame capacity | 4" × 2"Polyurethane | Swivel | 5-5/8" | $70.00 | View → |
