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.

The 4" x 1.25" HI-TECH Ball Bearing Caster with 1" to 1-1/16" Inside Dia. Square Tubing Expanding Adapter (MTG52) is engineered for optimal performance and versatility. This caster features HI-TECH construction for superior strength and durability, ensuring it stands up to the rigors of industrial environments. The precision ball bearings provide smooth and efficient movement, while the expanding adapter offers flexible mounting options, making this caster perfect for a wide range of applications. Whether used in machinery, carts, or equipment, this caster ensures reliable operation with low maintenance requirements.
Designed with industrial-grade standards, the 4" x 1.25" HI-TECH Ball Bearing Caster with Expanding Adapter (MTG52) is rigorously tested to meet the highest quality benchmarks. The product is backed by our customer satisfaction guarantee, ensuring peace of mind with every purchase. We stand by the performance and longevity of our casters, making them a reliable choice for heavy-duty applications. Whether your business needs a caster for everyday tasks or specialized industrial functions, you can trust our products for exceptional performance and value.
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 (MTG52) is an essential tool designed to enhance the mobility and efficiency of machinery and equipment in a variety of industrial and commercial settings. This caster is equipped with precision ball bearings that ensure smooth, low-friction operation, contributing to an extended product life and consistent performance.
The 4" x 1.25" HI-TECH Ball Bearing Caster is a versatile, heavy-duty solution for businesses requiring reliable and durable mobility solutions. The caster’s design ensures smooth operation and effortless movement, enhancing productivity by reducing friction and wear on equipment. Its adaptability to a wide range of square tubing sizes (1" to 1-1/16") makes it ideal for various industrial and commercial applications.
Whether you are in manufacturing, warehousing, or logistics, the 4" x 1.25" HI-TECH Ball Bearing Caster ensures that your machinery and equipment can move with ease and efficiency, improving overall workflow and reducing downtime. The combination of durability, load capacity, and temperature resistance ensures long-lasting performance, making it a trusted choice for demanding environments.
This caster is designed to meet the high standards of performance expected in industrial settings. It is RoHS compliant and NSF certified (excluding thread guards), offering assurance that it meets critical safety and environmental regulations. Additionally, the 3-year warranty guarantees peace of mind, ensuring your investment is protected over time.
With its sturdy construction and high-quality materials, this caster provides long-term value and reliability, making it an excellent choice for businesses seeking a dependable solution for heavy-duty mobility. It’s built to withstand tough conditions, ensuring that your equipment remains in motion with minimal maintenance required.
Our 4" x 1.25" HI-TECH Ball Bearing Caster is backed by a 3-year warranty, providing assurance of its quality and durability. We are committed to providing excellent customer service, ensuring that you can rely on this caster for years to come. If you have any concerns or questions about the product, our team is available to provide you with expert support and guidance.
This Colson 2.04267.95-MTG52 4" x 1.25" HI-TECH Caster – 1" Square Tube 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 → |



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