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.
Specialty Casters
Gate Casters
BBQ Pit & Smoker Casters
Keyed Drive Wheels
Drywall Cart Casters
Skid Wheels & Casters for RVs
Leveling Casters
Shopping Cart Wheels & Casters
Band Equipment Casters & Wheels
Low Profile Casters
Cart Wheels & Casters
Toolbox Caster Sets
Bakery & High Temperature Casters
Kitchen Prep Table Caster Sets
Wire Shelving Casters
Silent Glide Casters

The 4" x 1.25" Performa Ball Bearing Caster with 1" to 1-1/16" Inside Dia. Round Tubing Expanding Adapter (MTG42) - 2.04267.445 MTG42 delivers smooth, quiet, and reliable performance under heavy loads. The Performa ball bearings reduce friction, offering high efficiency and long-lasting durability. This caster is an excellent solution for environments that demand precision and minimal rolling resistance. The expanding adapter ensures easy installation, allowing the caster to securely fit round tubing without the need for additional components.
Our 4" x 1.25" Performa Ball Bearing Caster with 1" to 1-1/16" Inside Dia. Round Tubing Expanding Adapter (MTG42) - 2.04267.445 MTG42 is engineered to meet the highest standards of strength and performance. Each caster undergoes rigorous testing to ensure it can handle demanding industrial and commercial applications. We are committed to providing products that deliver consistent performance and long-term reliability. Backed by a customer satisfaction guarantee, this caster is a trusted choice for businesses that rely on quality and durability.
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" Performa Ball Bearing Caster with 1" to 1-1/16" Inside Dia. Round Tubing Expanding Adapter (MTG42) is engineered for industrial and commercial applications requiring high performance, durability, and versatility. With a load capacity of 300 lbs, this caster provides optimal functionality and reliability under heavy-duty conditions. It is designed to offer smooth, efficient movement, making it an ideal choice for a wide range of demanding tasks.
The 4" x 1.25" Performa Ball Bearing Caster is perfect for a wide variety of industrial, commercial, and institutional applications. It is commonly used in environments that require robust, smooth-rolling casters to carry heavy loads, such as factories, warehouses, and distribution centers. The durable and versatile design makes it an excellent choice for trolleys, carts, workstations, and more.
This caster is built to withstand extreme temperature fluctuations, operating effectively between -45°F and +180°F. This makes it ideal for use in both freezing and high-temperature environments. Coupled with its 300 lb load capacity, it is well-suited to carry heavy-duty loads across various industries, providing dependable performance even in the most challenging conditions.
The 4" x 1.25" Performa Ball Bearing Caster is designed for long-term use with minimal maintenance. The absence of thread guards and the high-performance ball bearings allow for easy maintenance and longer operational life. Its corrosion-resistant construction further ensures that the caster remains durable and functional even in demanding, harsh environments.
This caster is RoHS compliant, ensuring it meets environmental standards, and is NSF certified (less thread guards), making it a trusted choice for use in regulated industries. It comes with a 3-year warranty, offering peace of mind and assurance that it will perform reliably throughout its lifespan.
The 4" x 1.25" Performa Ball Bearing Caster with expanding adapter offers outstanding performance, durability, and versatility for a wide range of industrial and commercial uses. Its high-quality construction, easy installation, and reliable performance make it the ideal solution for businesses that require heavy-duty, smooth-rolling casters for their operations. Whether you need casters for carts, trolleys, or workstations, this product provides long-lasting value and exceptional quality for your investment.
This Colson 2.04267.445 MTG42 4" x 1.25" Performa Rigid Caster – CasterHQ 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 Gray Rubber wheel with a 1-1/4" tread width. Rubber absorbs shock and protects floors, and runs quietly, which suits noise-sensitive and light-to-medium duty use.
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 Gray Rubber wheel performs best on rough, uneven, or outdoor surfaces such as asphalt, gravel, and cracked concrete. 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).
$66.00
| Identification | |
| Brand | colson header |
| Dimensions & Mounting | |
| Wheel Diameter | 4" |
| Wheel Tread Width | 1-1/4" |
| Overall Height | 5.25" |
| Mount Style | Plate |
| Load & Performance | |
| Wheel Capacity | 300 lbs |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Gray Rubber |
| Wheel Core Material | Polyolefin |
| 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"Gray Rubber | — | 5.25" | $66.00 | 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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