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The 3.5" x 1.25" Polyolefin Delrin Bearing Caster with Square Tubing Expanding Adapter (MTG55) is built to provide reliable, smooth, and efficient movement for industrial applications. The Polyolefin material is engineered for durability, offering excellent resistance to wear, impact, and chemicals. The Delrin bearing provides precise, low-friction movement, allowing for enhanced performance and quiet operation even under heavy loads. The expanding adapter (MTG55) ensures compatibility with square tubing sizes ranging from 1-3/8" to 1-7/16" inside diameter, providing versatile mounting options. This caster is ideal for use in carts, machinery, and industrial equipment where smooth operation and long-term durability are essential.
Our 3.5" x 1.25" Polyolefin Delrin Bearing Caster with Square Tubing Expanding Adapter (MTG55) is crafted with the highest standards of quality and performance. Every caster undergoes rigorous testing to ensure it meets industrial-grade requirements, guaranteeing reliability and durability. We are committed to providing products that offer exceptional value, durability, and long-term performance. With our customer satisfaction guarantee, you can trust the quality and performance of this caster in any demanding industrial setting.
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 Square Tubing Expanding Adapter (MTG55) offers exceptional durability, smooth operation, and versatile mounting options, making it ideal for a wide range of industrial applications. Constructed with high-quality Polyolefin material and Delrin precision bearings, this caster delivers outstanding performance in both heavy-duty and sensitive environments. Its sturdy design ensures optimal functionality and longevity, making it a reliable choice for carts, machinery, and industrial equipment.
This caster is ideal for use in industrial environments where smooth movement, durability, and reliability are essential. Common applications include:
We are committed to providing products that deliver exceptional value, quality, and performance. Our 3.5" x 1.25" Polyolefin Delrin Bearing Caster with Square Tubing Expanding Adapter (MTG55) undergoes rigorous testing to ensure it meets industry standards and exceeds customer expectations. Backed by a 3-year warranty, we offer a satisfaction guarantee for peace of mind. Our casters are engineered to deliver reliable performance in even the most demanding industrial settings.
This Colson MTG55 3.5" x 1.25" Polyolefin Caster – 1-3/8" Square Tube 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).
$55.00
| 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 |
