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Band Equipment Casters & Wheels
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Wire Shelving Casters
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The 3.5" x 1.25" Polyolefin Ball Bearing Caster with 7/8" to 15/16" Inside Dia. Square Tubing Expanding Adapter (MTG51) is designed for high performance in light to medium-duty applications. The polyolefin wheel offers superior impact resistance and durability, ensuring that your equipment operates smoothly under everyday conditions. Equipped with precision ball bearings, this caster reduces friction, providing a reliable and consistent performance, even with heavy loads. The versatile expanding adapter makes installation easy on square tubing ranging from 7/8" to 15/16" in diameter. Whether for industrial carts, material handling, or commercial equipment, this caster provides superior mobility and reliability.
Our 3.5" x 1.25" Polyolefin Ball Bearing Caster with 7/8" to 15/16" Inside Dia. Square Tubing Expanding Adapter (MTG51) is crafted with exceptional care to meet the highest standards of industrial performance. Each caster is rigorously tested to ensure long-term durability and reliable performance in demanding environments. We are committed to offering products that deliver real value to our customers. With our customer satisfaction guarantee, you can rest assured that this caster will serve your operational needs effectively and efficiently.
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 7/8" to 15/16" Inside Dia. Square Tubing Expanding Adapter (MTG51) is the perfect solution for your light to medium-duty industrial and commercial needs. Built with superior materials and engineered for precision, this caster ensures smooth, reliable movement even under heavy loads. Its polyolefin wheel, paired with precision ball bearings, offers outstanding durability and performance, reducing wear and enhancing the caster's lifespan.
The caster features a full double ball hardened raceway that improves its overall durability and performance. This robust construction allows it to withstand tough conditions, making it ideal for industrial and commercial use where reliability is critical. Additionally, the multi-temperature grease ensures that the caster operates smoothly in temperatures ranging from -45°F to +180°F, making it a versatile choice for various environments, from freezing warehouses to hot industrial settings.
With a swivel design and a 1.25" wheel tread width, this caster provides both flexibility and stability. The round tread profile of the wheel offers balanced, efficient operation on smooth and slightly uneven surfaces. The caster is ideal for use on 7/8" to 15/16" Inside Diameter Square Tubing, thanks to the included expanding adapter, which ensures a secure and stable fit.
With a load capacity of 230 lbs, this caster is built to handle a variety of industrial and commercial applications, from material handling equipment to light-duty machinery. Whether you're moving carts, machines, or other equipment, the caster ensures a smooth operation, improving mobility and efficiency across your business operations.
This product is backed by a 3-year warranty, providing you with peace of mind knowing that it is built to last. Additionally, it is RoHS compliant and an NSF component (excluding thread guards), ensuring that it meets important safety and regulatory standards for industrial use.
The 3.5" x 1.25" Polyolefin Ball Bearing Caster is designed for professionals who need a reliable, durable, and efficient solution for their industrial and commercial needs. With a focus on performance, ease of installation, and long-lasting reliability, it offers great value to businesses looking to optimize their operations. Whether for material handling, equipment, or machinery, this caster delivers smooth, consistent movement, making it a key component in your business operations.
This Colson 2.03267.55 MTG51 3.5" x 1.25" Polyolefin Rigid Caster – CasterHQ 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.
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).
$62.00
| Identification | |
| Brand | colson header |
| Dimensions & Mounting | |
| Wheel Diameter | 3-1/2" |
| Wheel Tread Width | 1-1/4" |
| Overall Height | 4.56" |
| Mount Style | Plate |
| Load & Performance | |
| Wheel Capacity | 230 lbs |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Polyolefin |
| Frame Material | Zinc Plated Steel |
