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.

Discover the robust and reliable Spring-Loaded Kingpinless 6" x 3" Poly-on-Iron Rigid Caster designed for optimal performance in demanding environments. This caster features a kingpinless design to enhance durability and reduce maintenance. Its polyurethane-on-iron wheel composition ensures smooth operation on hard surfaces and resistance to abrasion, making it perfect for industrial applications. The large plate size provides increased stability, ensuring safety and efficiency in handling heavy loads.
Upgrade to the Spring-Loaded Kingpinless Caster for unmatched performance and longevity. This caster is ideal for applications that require dependable, long-lasting mobility solutions.
Enhance your equipment's performance and efficiency with our top-of-the-line casters. Shop now!
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 Spring-Loaded Kingpinless 6" x 3" Poly-on-Iron Rigid Caster is specifically engineered for high-demand environments where endurance and reliability are paramount. With its unique kingpinless design, this caster offers superior durability by eliminating the weak points found in traditional casters. Its polyurethane tread, bonded to a robust cast iron core, ensures smooth navigation across various surfaces while carrying heavy loads.
This caster's spring-loaded feature significantly reduces vibrations and impacts, making it an ideal choice for applications that require both mobility and stability. Whether it's for automotive assembly lines, industrial carts, or heavy machinery, our caster provides unmatched performance.
Compliant with RoHS and tested to ANSI ICWM:2012 standards, this caster not only meets but exceeds industry expectations. Additionally, it comes with a 1-year warranty, ensuring that it stands the test of time in rigorous industrial conditions.
Don’t let subpar components hold you back. Upgrade to our Spring-Loaded Kingpinless Caster today and experience the difference in durability and efficiency. Order now and transform your operations!
This Albion S310PY06501R 6"x3" Poly-on-Iron Rigid Spring Loaded Caster 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 3" 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 6-1/4" plate and a 2-7/16" x 4-15/16" slotted to 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 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.
The overall height (floor to top of plate or stem) is 10.88". 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).
$1,116.00
| Identification | |
| Brand | Albion Casters |
| Dimensions & Mounting | |
| Wheel Diameter | 6" |
| Wheel Tread Width | 3" |
| Overall Height | 10.88" |
| Plate Size | 4-1/2" x 6-1/4" |
| Bolt Hole Pattern | 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4" |
| Mount Style | Plate |
| Rig Type | Rigid |
| Load & Performance | |
| Wheel Capacity | 2000 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Polyurethane |
| Wheel Core Material | Iron |
| Frame Material | Zinc Plated Steel |
Hamilton FMK 6"x3" Metal Rigid Caster – 2000 lb | CasterHQ
6" x 3" · 2000 lbs
$473
6" x 3" Poly on Iron Swivel Forged Caster – 2000 lb | CasterHQ
6" x 3" · 2000 lbs · Direct fit
$131
6" x 3" Green Polyurethane Rigid Caster – 2,000 lb | CasterHQ
6" x 3" · 2000 lbs · Direct fit
$100
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, all in-stock.
| Casters (in stock) | Load capacity | Wheel | Type | Overall height | Price | |
|---|---|---|---|---|---|---|
| 2000 lbs | 6" × 3"Polyurethane | Rigid | 10.88" | $1,116.00 | Viewing | |
| 2000 lbsSame capacity | 6" × 3"Polyurethane | Swivel | 8" | $131.00 | View → | |
| 2000 lbsSame capacity | 6" × 3"Polyurethane | Rigid | 7-1/2" | $100.00 | View → | |
| 2000 lbsSame capacity | 6" × 3"Polyurethane | Rigid | 7-1/2" | $185.00 | View → | |
| 2000 lbsSame capacity | 6" × 3"Polyurethane | Swivel | 7-1/2" | $173.00 | View → |





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