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 6" x 2" Stainless Polyolefin Delrin Bearing Side-Lock Caster with 4" x 4.5" Plate (D4.06109.831 BRK7 SS) is designed to deliver reliable performance in demanding applications. Constructed from high-quality stainless steel and polyolefin materials, this caster is built to resist corrosion and maintain long-lasting durability. Its Delrin bearing ensures smooth, frictionless movement, making it ideal for industrial and commercial environments where both stability and efficiency are paramount.
The side-lock mechanism provides additional security, ensuring that your equipment stays in place even under heavy loads. The 4" x 4.5" mounting plate makes installation easy and provides a secure attachment, ensuring that the caster stays firmly in place. Whether you're using it for heavy machinery, carts, or other industrial equipment, this caster will enhance mobility and streamline operations.
We take pride in providing high-performance products that meet the rigorous demands of industrial and commercial settings. The 6" x 2" Stainless Polyolefin Delrin Bearing Side-Lock Caster with 4" x 4.5" Plate (D4.06109.831 BRK7 SS) is tested for durability and reliability, ensuring that it provides long-term performance. Our commitment to quality and customer satisfaction guarantees that you receive a product built to withstand tough conditions and deliver dependable service.
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 6" x 2" Stainless Polyolefin Delrin Bearing Side-Lock Caster with 4" x 4.5" Plate (D4.06109.831 BRK7 SS) is a high-performance caster designed to meet the needs of heavy-duty industrial and commercial applications. Engineered for maximum durability and smooth, reliable movement, this caster is ideal for a wide range of environments, from factories and warehouses to cold storage facilities and shipping areas.
Constructed with corrosion-resistant stainless steel and a polyolefin wheel, this caster is built to withstand demanding conditions. It also features a Delrin bearing for smooth operation, a top lock brake for added security, and FDA-approved grease for environments requiring high hygiene standards. With a load capacity of 700 lbs, it can handle heavy loads with ease, ensuring long-lasting, reliable performance in a variety of industrial settings.
This caster is ideal for a range of industries and environments, including:
At [Your Company], we are committed to providing products that meet the highest standards of quality and reliability. Each 6" x 2" Stainless Polyolefin Delrin Bearing Side-Lock Caster is thoroughly tested to ensure it meets our rigorous performance and safety standards. We stand behind our products with a 3-year warranty, ensuring long-term satisfaction and peace of mind for our customers.
Our team is dedicated to offering expert support and guidance, ensuring that you select the right caster for your needs. If you have any questions or require assistance, our knowledgeable customer service team is here to help.
This 6" x 2" Polyolefin Stainless Side Lock Caster – 4" x 4.5" Plate 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 Polyolefin 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" plate and a 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 Swivel with Brake caster with a wheel brake. Swivel casters rotate 360 degrees for full maneuverability. The brake locks the wheel to hold the load in place. 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 Polyolefin 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 7-1/2". 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).
$224.00
| Identification | |
| Brand | colson header |
| Dimensions & Mounting | |
| Wheel Diameter | 6" |
| Wheel Tread Width | 2" |
| Overall Height | 7-1/2" |
| Plate Size | 4" x 4-1/2" |
| Bolt Hole Pattern | 3" x 3" |
| Mount Style | Plate |
| Rig Type | Swivel with Brake |
| Load & Performance | |
| Wheel Capacity | 700 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | Side Lock Brake |
| Materials & Finish | |
| Wheel Material | Polyolefin |
| Frame Material | Stainless Steel |
6" x 2" Gray Iron Spring Loaded Caster – 700 lb | CasterHQ
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6" x 2" Thermo Rubber Rigid Caster – 600 lb | 4" x 4-1/2" Plate | CasterHQ
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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 | |
|---|---|---|---|---|---|---|
| 550 lbsLighter duty | 6" × 2"Rubber | — | — | $164.00 | View → | |
| 600 lbsLighter duty | 6" × 2"Gray Rubber | Rigid | 7-1/2" | $31.00 | View → | |
| 700 lbs | 6" × 2"Polyolefin | Swivel with Brake + brake | 7-1/2" | $224.00 | Viewing | |
| 700 lbsSame capacity | 6" × 2"Cast Iron | — | — | $151.00 | View → | |
| 900 lbsHeavier duty | 6" × 2"Polyurethane | Rigid | 7-1/2" | $23.00 | View → |





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