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 Colson Casters 4" x 1.25" Polyolefin Ball Bearing Caster with Expanding Adapter (MTG43) is an excellent choice for a wide range of applications. Whether you're looking to enhance mobility in industrial machinery or need a caster for heavier loads, this model offers both performance and reliability.
Featuring a durable polyolefin wheel, this caster is designed to resist wear and provide long-lasting smoothness even under heavy use. The ball bearing system ensures smooth and easy rolling, reducing friction and making it ideal for environments requiring constant movement.
The expanding adapter, with a fitting range of 1-1/8" to 1-3/16" inside diameter round tubing, offers greater flexibility and adaptability for various mounting requirements. This caster is particularly well-suited for carts, conveyors, and other equipment in both industrial and commercial settings.
Colson Casters is committed to delivering high-quality mobility solutions with a focus on durability, ease of use, and superior performance. Whether used for light or heavy-duty tasks, the MTG43 caster provides the strength and versatility you need.
Upgrade your equipment and operations with the Colson Casters 4" x 1.25" Polyolefin Ball Bearing Caster. Experience unmatched durability and ease of movement in every application.
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 (MTG43) is engineered to provide smooth, reliable, and durable mobility solutions across various industrial and commercial applications. Designed for demanding environments, this caster features a polyolefin wheel and a ball bearing system that ensures smooth rolling, while the expanding adapter is tailored for use with 1-1/8" to 1-3/16" inside diameter round tubing. Ideal for heavy-duty use, the MTG43 caster excels in versatility and performance, making it an excellent choice for carts, conveyors, and equipment across diverse sectors.
The Colson Casters MTG43 is a versatile mobility solution suitable for use in numerous industries, including:
Colson Casters is committed to providing long-lasting mobility solutions. The MTG43 caster’s polyolefin wheel offers outstanding wear resistance, even under heavy load conditions. The ball bearing system minimizes friction, ensuring long-term smooth performance while reducing the need for frequent maintenance. Additionally, the corrosion-resistant features make it highly durable, suitable for both indoor and outdoor environments.
With decades of expertise in the caster industry, Colson Casters is a trusted brand known for its high-quality products that enhance mobility in various settings. The MTG43 caster is designed to meet the demands of professionals across different industries, offering a perfect combination of durability, smooth operation, and versatility.
Whether you're outfitting industrial machinery, upgrading carts for medical environments, or seeking reliable mobility solutions for commercial use, the Colson Casters MTG43 ensures top-tier performance. Experience enhanced productivity and long-lasting reliability with Colson’s renowned mobility solutions.
Invest in the Colson Casters 4" Polyolefin Ball Bearing Caster today for improved efficiency, enhanced mobility, and long-term reliability. Elevate your mobility solutions and achieve the highest performance in any environment.
This Colson 2.04267.55 MTG43 4" x 1.25" Polyolefin Caster – 1-1/8" to 1-3/16" 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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