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.
Specialty Casters
Gate Casters
BBQ Pit & Smoker Casters
Keyed Drive Wheels
Drywall Cart Casters
Skid Wheels & Casters for RVs
Leveling Casters
Shopping Cart Wheels & Casters
Band Equipment Casters & Wheels
Low Profile Casters
Cart Wheels & Casters
Toolbox Caster Sets
Bakery & High Temperature Casters
Kitchen Prep Table Caster Sets
Wire Shelving Casters
Silent Glide Casters

Enhance your mobility solutions with the Colson Casters 4" x 1.25" Polyolefin Ball Bearing Caster. Designed for a wide range of applications, this caster is engineered to deliver smooth performance and long-lasting durability. Featuring a robust Polyolefin wheel, it is ideal for both indoor and outdoor use, handling various environments with ease.
The ball bearing design ensures smooth, low-friction movement, making it perfect for environments where ease of use is essential. Whether you're moving heavy equipment or simply need efficient and durable wheels, this caster is up to the task. Additionally, the expanding adapter allows for quick and easy installation in square tubing with an inside diameter between 1-1/4" and 1-5/16", making it versatile and convenient for a variety of setups.
From warehouses to hospitals and more, Colson Casters provides the reliability you need in every application. The 4" x 1.25" size offers excellent load-bearing capacity, while the expanding adapter ensures that your caster stays securely in place. With Colson Casters, you can trust that your equipment moves smoothly, efficiently, and safely.
Experience the difference with Colson Casters' premium mobility solutions. Order the 4" x 1.25" Polyolefin Ball Bearing Caster with Expanding Adapter today and enhance your operations with reliable, smooth, and durable caster technology.
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 Colson Casters 4" x 1.25" Polyolefin Ball Bearing Caster with Expanding Adapter (MTG54) is designed to provide durable, efficient, and reliable mobility for industrial, commercial, and general-purpose applications. Whether you're moving heavy equipment in a warehouse or need a dependable caster for hospital furniture, this caster is engineered to meet demanding needs while ensuring smooth, low-maintenance performance.
The Polyolefin wheel is an essential feature of this caster, providing superior durability and resistance to wear and tear. Polyolefin is known for its ability to withstand harsh environments, making it ideal for both indoor and outdoor use. It is resistant to impacts, abrasion, and certain chemicals, ensuring a long lifespan even in the most demanding conditions. This makes the Colson Casters 4" x 1.25" caster an excellent choice for a variety of applications, including warehouses, factories, and medical facilities.
With a ball bearing design, this caster provides a smooth and low-friction operation, making it ideal for environments that require constant movement. The ball bearings ensure that the caster rolls easily and efficiently, minimizing effort and reducing wear on both the caster and the surface it moves across. This smooth movement translates into less strain on equipment and reduces the likelihood of downtime, enhancing productivity in commercial and industrial settings.
The expanding adapter of the Colson Casters MTG54 model is one of its standout features. This adapter allows the caster to fit securely into square tubing with an inside diameter ranging from 1-1/4" to 1-5/16". The expanding design ensures that the caster stays firmly in place, providing stability and security for the equipment it is supporting. Installation is quick and easy, with minimal downtime, making it a practical solution for both new and existing setups.
The Colson Casters 4" x 1.25" Polyolefin Ball Bearing Caster is designed to handle the heavy demands of industrial, commercial, and medical environments. Whether you're moving medical carts in a hospital, industrial machinery in a factory, or heavy storage containers in a warehouse, this caster can handle it all. Its versatility and reliability make it a preferred choice in settings where high performance and durability are critical.
One of the most user-friendly features of this caster is its easy installation process. The expanding adapter ensures a quick and secure fit, minimizing the time and effort needed for setup. Additionally, the ball bearing design reduces the need for frequent maintenance, offering a low-maintenance solution for high-demand environments. This combination of ease of installation and low maintenance makes the Colson Casters 4" x 1.25" Polyolefin Ball Bearing Caster a cost-effective solution for your mobility needs.
This caster is engineered to handle heavy loads, making it perfect for moving large, bulky, or cumbersome items. The 4" x 1.25" wheel size strikes the perfect balance between load-bearing capacity and maneuverability, ensuring that even the heaviest equipment can be moved smoothly and efficiently. Whether used for industrial machinery, medical equipment, or large containers, this caster provides the support you need to get the job done.
The versatility of the Colson Casters 4" x 1.25" Polyolefin Ball Bearing Caster with Expanding Adapter makes it suitable for a wide range of applications. It is ideal for use in warehouses, hospitals, factories, shopping carts, and more. No matter the environment, this caster delivers reliable, long-lasting performance to ensure smooth operations across various industries. Its robust design ensures it can withstand the rigors of frequent use in high-traffic areas, providing long-term value for your mobility needs.
The Colson Casters 4" x 1.25" Polyolefin Ball Bearing Caster offers a cost-effective solution for businesses seeking durable, high-performance casters. With its combination of durability, smooth operation, easy installation, and low maintenance, this caster provides excellent value for your investment. It's designed to help businesses optimize efficiency and reduce operational costs by minimizing downtime and maintenance needs, ultimately improving overall productivity.
This Colson MTG54 4" x 1.25" Polyolefin Caster – 1-1/4" Square Adapter is rated to 275 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 1-1/4" tread width. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
This caster uses a top-plate mount. Measure your existing mounting holes before ordering; if you are replacing casters, match the bolt pattern - most standard patterns interchange across brands.
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 5.25". 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).
$62.00
| Identification | |
| Brand | colson header |
| Dimensions & Mounting | |
| Wheel Diameter | 4" |
| Wheel Tread Width | 1-1/4" |
| Overall Height | 5.25" |
| Mount Style | Plate |
| Load & Performance | |
| Wheel Capacity | 275 lbs |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Polyolefin |
| Frame Material | Zinc Plated Steel |
4" x 1.25" Polyurethane Swivel Caster – 325 lb | 2.5" x 3.625" Top Plate | CasterHQ
4" x 1-1/4" · 260 lbs
$14
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 | |
|---|---|---|---|---|---|---|
| 250 lbsLighter duty | 4" × 1-1/4"Gray Rubber | Swivel with Total Lock Brake + brake | — | $24.00 | View → | |
| 260 lbsLighter duty | 4" × 1-1/4"Polyurethane | Swivel | 4-1/8" | $14.00 | View → | |
| 275 lbs | 4" × 1-1/4"Polyolefin | — | 5.25" | $62.00 | Viewing | |
| 300 lbsHeavier duty | 4" × 1-1/4"Polyurethane | Swivel | 5-1/8" | $19.00 | View → | |
| 300 lbsHeavier duty | 4" × 1-1/4"Polyurethane | Swivel | 5-1/8" | $19.00 | View → |



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