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.
The 40 Series Rigid Caster with 6" x 2" rubber on steel wheel is built to deliver superior performance and durability in medium-duty environments. Featuring a rubber wheel mounted on a high-strength steel frame, this caster is designed to handle up to 550 lbs, providing excellent load-bearing capabilities.
Whether you're moving equipment or organizing industrial shelving, the 40 Series caster ensures smooth and quiet movement, even on rough surfaces. Its rubber wheel is not only highly durable but also gentle on floors, protecting them from damage.
Discover the power of the 40 Series 6" x 2" rigid caster. Built to last and designed for exceptional functionality.
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 Medium Heavy Duty 34 Series caster is engineered to provide exceptional performance and durability in the most demanding environments. With a 6" x 2" rubber on steel wheel, this caster delivers a smooth rolling action while maintaining a robust 550 lb capacity, making it perfect for heavy-duty applications across industries. The caster features a versatile 4" x 4-1/2" top plate, providing compatibility with a wide variety of equipment, from industrial machinery to warehouse carts.
Benefits of Using the Durastar Caster
The Durastar Medium Heavy Duty 34 Series caster is designed to offer practical solutions for demanding applications. Its high load capacity of 550 lbs ensures that it can handle the weight of large equipment, while the smooth rubber wheel construction guarantees quiet, effortless rolling across various surfaces.
In addition to ease of use, this caster's durable design minimizes maintenance and reduces downtime in busy environments. The caster’s rugged construction is built to withstand the demands of high-traffic areas and ensure long-term reliability, reducing the need for frequent replacements. The Durastar caster is a reliable choice for operations requiring efficient mobility solutions.
The Durastar Medium Heavy Duty 34 Series caster is ideal for a variety of demanding applications. Some of the most common use cases include:
Discover how the Durastar Medium Heavy Duty 34 Series caster can transform your equipment and enhance operational efficiency. Designed for heavy-duty applications and built to last, this caster is the perfect choice for industries seeking reliable mobility solutions. Shop now to improve your workflow with high-performance, durable casters.
This 6" x 2" Rubber on Steel Rigid Caster – 550 lb – 4" x 4-1/2" Plate is rated to 550 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 Rubber wheel with a 2" tread width. Rubber absorbs shock and protects floors, and runs quietly, which suits noise-sensitive and light-to-medium duty use.
This caster uses a top-plate mount with a 4" x 4-1/2" plate and a 2-5/8" x 3-3/8" slotted to 3" x 3" 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 Rubber wheel performs best on rough, uneven, or outdoor surfaces such as asphalt, gravel, and cracked concrete. For non-marking or clean-environment needs, ask us about matching tread options.
The overall height (floor to top of plate or stem) is 7-1/2". 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).
$37.00
| Identification | |
| Brand | Durastar |
| Dimensions & Mounting | |
| Wheel Diameter | 6" |
| Wheel Tread Width | 2" |
| Overall Height | 7-1/2" |
| Plate Size | 4" x 4-1/2" |
| Bolt Hole Pattern | 2-5/8" x 3-3/8" slotted to 3" x 3" |
| Mount Style | Plate |
| Rig Type | Rigid |
| Load & Performance | |
| Wheel Capacity | 550 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Rubber |
| Frame Material | Zinc Plated Steel |
6" x 2" Rubber on Cast Iron Spring Loaded Gate Caster – 550 lb | CasterHQ
6" x 2" · 550 lbs
$164
6" x 2" Mold-On Rubber Rigid Caster – 550 lb | 4" x 4-1/2" Plate | CasterHQ
6" x 2" · 550 lbs · Direct fit
$32
6" x 2" Mold-On Rubber Swivel Caster – 550 lb | 4" x 4-1/2" Top Plate | CasterHQ
6" x 2" · 550 lbs · Direct fit
$38
View all 6′ x 2′ 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 | |
|---|---|---|---|---|---|---|
| 500 lbsLighter duty | 6" × 2"Gray Rubber | — | — | $25.00 | View → | |
| 500 lbsLighter duty | 6" × 2"Gray Rubber | Rigid | 7-1/2" | $29.00 | View → | |
| 550 lbs | 6" × 2"Rubber | Rigid | 7-1/2" | $37.00 | Viewing | |
| 550 lbsSame capacity | 6" × 2"Rubber | Rigid | 7-1/2" | $32.00 | View → | |
| 550 lbsSame capacity | 6" × 2"Rubber | Swivel | 7-1/2" | $38.00 | View → |





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