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The 3.5" x 1.25" Polyolefin Delrin Bearing Caster with 7/8" to 15/16" Inside Dia. Square Tubing Expanding Adapter (MTG51) offers exceptional versatility and performance for a range of industrial applications. Featuring a high-quality polyolefin wheel paired with a Delrin bearing, this caster delivers smooth and reliable movement even under heavy-duty loads. The expanding adapter design ensures compatibility with square tubing, making it easy to install in a variety of setups. Whether you're transporting equipment, machinery, or materials, this caster provides excellent load-bearing capacity and durability.
Our 3.5" x 1.25" Polyolefin Delrin Bearing Caster with Expanding Adapter (MTG51) is built to meet the highest standards of industrial reliability and performance. Each caster undergoes strict quality control tests to ensure it withstands demanding conditions and provides long-lasting performance. Whether you're using it for material handling or equipment transport, you can count on this caster to support your operations with smooth, dependable mobility. Backed by our satisfaction guarantee, we are committed to delivering high-quality solutions to meet your business needs.
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 Delrin Bearing Caster with 7/8" to 15/16" Inside Dia. Square Tubing Expanding Adapter (MTG51) is designed for use in a wide variety of industrial applications. With a load capacity of 230 lbs, this caster offers durability, reliability, and exceptional performance under heavy-duty conditions. Built to handle challenging environments, it features high-quality polyolefin wheels and Delrin bearings that provide smooth, effortless movement even under substantial loads.
The 3.5" x 1.25" Polyolefin Delrin Bearing Caster with Expanding Adapter is ideal for use in various industrial environments, such as:
This caster provides outstanding performance in environments that demand durability, corrosion resistance, and smooth movement under high loads. With a robust polyolefin wheel, Delrin bearings, and a full double ball hardened raceway, it is built to handle extreme conditions without compromising performance. Its versatility in mounting, along with its impressive load capacity and temperature resistance, makes it the go-to solution for a variety of industrial and commercial applications. The included expanding adapter adds to its flexibility, making installation straightforward and adaptable to different systems.
We prioritize quality and reliability in all of our products. The 3.5" x 1.25" Polyolefin Delrin Bearing Caster is rigorously tested to ensure it meets the highest industry standards. We stand behind our products with a 3-year warranty and a satisfaction guarantee. When you choose this caster, you're investing in a product built for performance, longevity, and customer satisfaction.
This Colson 2.03267.53 3.5" x 1.25" Polyolefin Caster – 7/8" to 15/16" is rated to 230 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.
This is a Swivel caster. Swivel casters rotate 360 degrees for full maneuverability. For most mobile equipment we recommend 2 swivel + 2 rigid, or 4 swivel with at least 2 brakes.
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 4.56". 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).
$54.00
| Identification | |
| Brand | colson header |
| Dimensions & Mounting | |
| Wheel Diameter | 3-1/2" |
| Wheel Tread Width | 1-1/4" |
| Overall Height | 4.56" |
| Mount Style | Plate |
| Rig Type | Swivel |
| Load & Performance | |
| Wheel Capacity | 230 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Polyolefin |
| Frame Material | Zinc Plated Steel |
