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 Delrin Bearing Caster with Expanding Adapter (MTG47) is engineered for reliability and smooth operation in demanding environments. Designed with a high-quality polyolefin wheel, this caster ensures durability while minimizing wear and tear, offering you a long-lasting solution for your mobility needs.
With its expanding adapter (1-5/8" to 1-11/16" Inside Diameter), this caster fits securely on round tubing, making it an ideal choice for a wide variety of applications including material handling and industrial use. The Delrin bearing design enhances rolling efficiency and minimizes friction, which translates to reduced energy consumption and longer life expectancy for the caster.
Whether used in manufacturing plants, warehouses, or healthcare facilities, the Colson Casters provide consistent performance and support under heavy loads. The ergonomic design ensures ease of use and optimal maneuverability, reducing strain on operators. Designed with quality and reliability in mind, these casters help streamline operations and improve workflow efficiency.
Upgrade your equipment and operations with the Colson Casters 4" Polyolefin Delrin Bearing Caster. Experience superior performance, durability, and ease of use in your industrial or general purpose applications.
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" Polyolefin Delrin Bearing Caster with Expanding Adapter (MTG47) is engineered to deliver top-tier performance and reliability across a variety of industrial and general-use applications. Its unique combination of high-quality materials and innovative design ensures smooth operation, even under the most demanding conditions. This caster is the ideal solution for businesses looking to enhance their mobility solutions while optimizing for efficiency and durability.
Colson Casters is known for its commitment to quality, and this product is no exception. Designed with a Polyolefin wheel, this caster offers the durability required for heavy-duty environments, making it ideal for use in factories, warehouses, hospitals, and other high-traffic settings. The Delrin bearing ensures reduced friction, leading to smoother operation and prolonged lifespan, making it an investment that delivers long-term value.
Colson Casters are designed to meet the highest industry standards. Whether you’re moving heavy equipment in a warehouse or navigating narrow hospital hallways, this caster’s ergonomic design ensures ease of use and maneuverability. The expanding adapter makes it simple to install, and the durable materials ensure long-term reliability, even in demanding industrial and healthcare settings.
The Colson Casters 4" Polyolefin Delrin Bearing Caster is perfect for a wide range of applications, including:
Proudly made in the USA, Colson Casters brings you a product that’s not only designed to meet your mobility needs but also built to exceed your expectations. With a focus on quality, precision, and performance, Colson Casters ensures that you’re getting the best in class. Whether it’s for industrial, healthcare, or general-purpose use, this caster offers superior functionality that contributes to the overall efficiency of your operations.
Upgrade your mobility systems today with the Colson Casters 4" Polyolefin Delrin Bearing Caster. With its exceptional performance, easy installation, and long-lasting durability, it's the perfect addition to any equipment requiring smooth, reliable movement. Trust Colson Casters to enhance your operations and boost productivity.
This Colson MTG47 4" x 1.25" Polyolefin Caster – 1-5/8" Expanding 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).
$55.00
| 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" | $55.00 | 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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