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The Colson Casters 4" x 1.25" Polyolefin Ball Bearing Caster with Expanding Adapter (MTG51) offers exceptional functionality for a wide range of industrial and commercial applications. Designed with a high-quality polyolefin wheel, this caster is engineered to deliver smooth, quiet operation and enhanced durability for extended service life.
Featuring a precision ball bearing design, this caster minimizes friction, ensuring efficient and effortless movement. The expanding adapter is designed to securely fit square tubing with an inside diameter ranging from 7/8" to 15/16", offering versatility and ease of use in various setups.
Whether you're outfitting carts, workstations, or medical equipment, this caster is designed to meet the demands of daily use in commercial and light-duty environments. Its polyolefin wheel ensures superior resistance to wear, making it an ideal solution for applications requiring durability and mobility.
Invest in Colson Casters to experience a high standard of engineering and quality, backed by years of experience in producing top-tier mobility solutions. With its combination of strength, reliability, and smooth operation, this caster will enhance the efficiency and functionality of your equipment.
Elevate your equipment's mobility with the Colson Casters Polyolefin Ball Bearing Caster. Perfect for a wide range of applications, it offers unmatched reliability and smooth performance that you can depend on. Order today and enhance your operational efficiency.
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 (MTG51) is designed to meet the mobility needs of demanding industrial and commercial environments. Crafted with precision and engineered for optimal performance, this caster is ideal for carts, workstations, and a wide variety of other equipment requiring smooth, reliable movement.
Constructed from high-quality polyolefin, this caster provides superior durability, ensuring long-lasting performance even in high-demand environments. Polyolefin’s wear resistance and ability to handle tough conditions make it an ideal choice for applications where dependability and smooth rolling action are essential.
The ball bearing design further enhances the caster's performance, providing reduced friction and allowing for effortless rolling. This makes it a great solution for environments that require quick, easy movement of carts, trolleys, or other equipment.
One of the standout features of this caster is the expanding adapter, which is designed to securely fit square tubing with an inside diameter ranging from 7/8" to 15/16". This ensures that the caster can be easily installed and offers a versatile solution for various industrial setups. Whether outfitting a new cart or replacing an existing caster, the expanding adapter guarantees a stable, secure fit without the need for complex modifications.
The Colson Casters Polyolefin Ball Bearing Caster is designed for use in a wide range of applications, from industrial settings to commercial environments. Ideal for workstations, carts, and medical equipment, this caster is versatile and reliable in ensuring smooth mobility wherever it's needed. Whether you're outfitting factory floors, healthcare facilities, or warehouses, this caster is built to handle the demands of each unique environment.
With its ability to perform under moderate load conditions, this caster is perfect for light to medium-duty applications, ensuring that equipment can be moved with ease while maintaining structural integrity and safety.
Designed to minimize user effort while maximizing mobility, this caster helps streamline operations by providing smooth, easy movement across a variety of surfaces. The ball bearing design reduces friction, ensuring a quieter and more efficient operation compared to standard casters. This enhanced mobility boosts operational efficiency, making it an ideal choice for any setting where ease of movement is essential.
Installation is made easy with the expanding adapter feature, which allows the caster to fit securely into square tubing without the need for additional tools or complex modifications. Whether you're upgrading existing equipment or building something new, the Colson Casters Polyolefin Ball Bearing Caster is designed for quick, hassle-free installation, saving you time and effort during setup.
Colson Casters is committed to providing high-quality products, and this caster is no exception. Made in the USA with premium materials, it offers the durability and performance needed for long-term use. Trust in Colson’s decades of expertise in mobility solutions to deliver a product that meets the highest standards of quality and reliability.
Colson Casters offers innovative, high-performance mobility solutions that enhance efficiency and improve operational workflows. The Polyolefin Ball Bearing Caster with Expanding Adapter combines durability, versatility, and ease of installation to provide a reliable solution for all your equipment mobility needs. Invest in Colson Casters today and experience the difference in quality and performance.
This Colson MTG51 4" x 1.25" Polyolefin Caster – 7/8" to 15/16" Stem 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 → |
