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

The 3.5" x 1.25" Polyolefin Ball Bearing Caster with 1-3/8" to 1-7/16" Inside Dia. Round Tubing Expanding Adapter (MTG45) is designed for versatility and reliable performance in both commercial and residential environments. Featuring a durable polyolefin wheel and precision ball bearings, this caster delivers smooth, quiet rolling with minimal effort. Its expanding adapter allows for easy installation onto round tubing with an inside diameter ranging from 1-3/8" to 1-7/16", providing enhanced compatibility for various applications. Whether for light-duty industrial use or moving heavy loads in confined spaces, this caster offers optimal performance and convenience.
Our 3.5" x 1.25" Polyolefin Ball Bearing Caster with 1-3/8" to 1-7/16" Inside Dia. Round Tubing Expanding Adapter (MTG45) is engineered to meet the highest standards of quality and durability. Each unit undergoes rigorous testing to ensure that it meets industrial-grade requirements for reliable, long-lasting use. With a customer satisfaction guarantee, you can confidently rely on our caster to support your equipment, machinery, and transportation needs. Designed for ease of use and superior performance, our caster is the ideal choice for anyone seeking dependable, high-quality mobility solutions.
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 3.5" x 1.25" Polyolefin Ball Bearing Caster with Expanding Adapter (MTG45) is a versatile and durable mobility solution designed for a wide range of light-duty industrial, commercial, and residential applications. This caster features a high-performance polyolefin wheel combined with precision ball bearings, ensuring smooth and quiet operation, even under moderate loads. Its expanding adapter is compatible with round tubing that has an inside diameter of 1-3/8" to 1-7/16", making it a flexible solution for a variety of mounting needs.
Engineered for long-term performance, this caster is built to withstand the demands of frequent movement and heavy usage. The polyolefin wheel material is both impact-resistant and corrosion-resistant, ensuring the caster performs reliably in challenging environments, such as warehouses, factories, and distribution centers. Its ball bearings provide smooth, low-friction movement, further enhancing durability and reducing wear over time.
One of the standout features of this caster is its expanding adapter, which allows for easy installation on tubing with inside diameters ranging from 1-3/8" to 1-7/16". This design provides added versatility, allowing the caster to be used across a range of equipment and machinery. Whether you're upgrading your current setup or designing new machinery, the expanding adapter ensures a secure and reliable fit, minimizing installation time and hassle.
Designed for light-duty industrial and commercial applications, the 3.5" x 1.25" Polyolefin Ball Bearing Caster offers optimal performance in environments where smooth and reliable movement is essential. It is perfect for use with light machinery, equipment, and carts, as well as in areas that require frequent but low-friction mobility. The precision ball bearings ensure quiet operation and reliable movement, even in high-traffic areas.
With its expanding adapter design, this caster allows for a quick and secure installation process. The adapter is designed to fit a wide range of tubing sizes, giving you the flexibility to use this caster in various applications. The expanding feature ensures a tight and secure fit, providing stability and preventing slipping, so you can rest assured that your equipment remains safely in place.
At the heart of this product is a commitment to quality and reliability. Each 3.5" x 1.25" Polyolefin Ball Bearing Caster is rigorously tested to meet high industry standards, ensuring that it will provide dependable performance in your business operations. Backed by a customer satisfaction guarantee, this caster is built to last, offering peace of mind for your investment.
This caster is ideal for a variety of commercial and industrial uses. Whether you need mobility for light machinery, carts, or equipment, this caster ensures smooth movement in busy environments. It is also an excellent choice for residential use, providing durability and convenience for everyday mobility needs.
The 3.5" x 1.25" Polyolefin Ball Bearing Caster with Expanding Adapter (Model 2.03267.55 MTG45) combines durability, versatility, and high-performance features to meet the needs of businesses and individuals alike. Its precision ball bearings, expanding adapter, and corrosion-resistant polyolefin wheel make it an excellent choice for light-duty applications that require reliable, smooth, and easy movement.
This Colson 2.03267.55 3.5" x 1.25" Polyolefin Caster – 1-3/8" to 1-7/16" is rated to 230 lbs per wheel. Divide the total load across the number of wheels in your rig and keep working loads within about 75-80% of the rating for continuous use.
This is a Polyolefin wheel. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
3-1/2" diameter x 1-1/4" tread width. Verify your axle diameter and hub/bore length against your existing wheel before ordering.
Yes. Most wheels can be paired with a swivel or rigid rig to build a complete caster. Tell us your mount and load and we will spec the rig - request it on our bulk pricing page.
Rated for -20°F to 180°F. Operating outside the rated range can shorten wheel life and reduce capacity.
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 | 3-1/2" |
| Wheel Tread Width | 1-1/4" |
| Load & Performance | |
| Wheel Capacity | 230 lbs |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Polyolefin |
| Frame Material | Zinc Plated Steel |
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