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The 4" x 1.25" HI-TECH Ball Bearing Caster with 7/8" to 15/16" Inside Dia. Square Tubing Expanding Adapter (MTG51) offers exceptional performance and durability for various industrial and commercial applications. Featuring HI-TECH ball bearings, this caster delivers smooth and reliable movement, even under heavy loads. The expanding adapter design ensures easy installation and a secure fit for square tubing with diameters ranging from 7/8" to 15/16". Whether used in machinery, equipment, or carts, this caster is built to withstand the rigors of demanding environments. The high-quality materials ensure long-term reliability, making it a cost-effective and trustworthy solution for your mobility needs.
We stand behind the quality of our 4" x 1.25" HI-TECH Ball Bearing Caster with Expanding Adapter (MTG51). Each caster is meticulously tested to meet industry standards for performance and durability, ensuring it meets the toughest demands of commercial and industrial environments. With our commitment to quality, you can trust that this product will provide you with dependable performance and long-lasting value. Backed by our customer satisfaction guarantee, this caster is an investment in efficiency and reliability for your business.
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 4" x 1.25" HI-TECH Ball Bearing Caster with Expanding Adapter (MTG51) is engineered to deliver smooth, reliable performance under heavy-duty industrial and commercial conditions. Designed with precision and durability in mind, this caster offers exceptional mobility and ease of use, even in the most challenging environments.
Designed for demanding industrial and commercial applications, this caster offers both reliability and ease of use. The heavy-duty construction ensures that it can withstand heavy loads, while the smooth ball bearing system provides effortless movement for machinery and equipment. The durable polyurethane wheels offer an ideal balance of impact resistance and traction, making it a versatile choice for various surfaces and environments.
The expanding adapter allows for quick installation and easy adjustments to fit square tubing sizes ranging from 7/8" to 15/16". Combined with its corrosion-resistant zinc finish, the caster offers long-term reliability and minimal maintenance, making it an excellent investment for businesses looking to optimize their operations.
With its robust design and high-quality materials, this 4" x 1.25" HI-TECH Ball Bearing Caster is an essential component for industrial and commercial settings. Whether you're upgrading existing equipment or building new machinery, this caster provides smooth movement, durability, and versatility across a range of applications. The combination of precision engineering and high-performance materials makes it an ideal solution for industries that demand reliability and efficiency.
Our 4" x 1.25" HI-TECH Ball Bearing Caster is crafted to meet the highest industry standards for performance and durability. It undergoes rigorous testing to ensure it can handle the toughest tasks, and our commitment to quality means we stand behind the product with a 3-year warranty. Whether you need to enhance your business’s operations or upgrade your equipment, you can trust this caster to provide years of reliable service.
This Colson 2.04267.95 4" x 1.25" Ball Bearing Caster 7/8" to 15/16" Stem is rated to 300 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 Polyurethane 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 Polyurethane 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).
$68.00
| Identification | |
| Brand | colson header |
| Dimensions & Mounting | |
| Wheel Diameter | 4" |
| Wheel Tread Width | 1-1/4" |
| Overall Height | 5.25" |
| Mount Style | Plate |
| Rig Type | Swivel |
| Load & Performance | |
| Wheel Capacity | 300 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Polyurethane |
| Frame Material | Zinc Plated Steel |
4" x 1-1/4" Polyurethane Swivel Caster – 300 lb | 3-1/8" x 4-1/8" Plate | CasterHQ
4" x 1-1/4" · 300 lbs
$19
View all 4′ x 1-1/4′ casters & wheels →
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 → | |
| 300 lbs | 4" × 1-1/4"Polyurethane | Swivel | 5.25" | $68.00 | Viewing | |
| 300 lbsSame capacity | 4" × 1-1/4"Polyurethane | Swivel | 5-1/8" | $19.00 | View → | |
| 300 lbsSame capacity | 4" × 1-1/4"Polyurethane | Swivel | 5-1/8" | $19.00 | View → |
