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 5" x 1.25" HI-TECH Ball Bearing Caster with 7/8" to 15/16" Inside Dia. Square Tubing Expanding Adapter (MTG51) is designed to offer superior performance in various industrial and commercial applications. The high-tech construction features precision ball bearings for smooth, effortless rolling, even under heavy loads. The expanding adapter is ideal for square tubing, making installation easy and adaptable to multiple setups. This caster is built for durability, ensuring long-term reliability in demanding environments. It provides excellent maneuverability and strength, making it the go-to solution for a range of equipment and machinery needs.
Our 5" x 1.25" HI-TECH Ball Bearing Caster with 7/8" to 15/16" Inside Dia. Square Tubing Expanding Adapter (MTG51) is engineered to meet high industrial standards for quality and performance. Each caster undergoes rigorous testing to ensure it meets or exceeds specifications for durability, load capacity, and smooth operation. We are committed to providing products that offer exceptional value, longevity, and reliability. Backed by a customer satisfaction guarantee, you can trust that this caster will meet your business's needs, providing dependable service over time.
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 5" x 1.25" HI-TECH Ball Bearing Caster with 7/8" to 15/16" Inside Dia. Square Tubing Expanding Adapter (MTG51) is a high-performance, heavy-duty caster designed for industrial applications. Featuring a precision ball bearing system and a durable HI-TECH polyurethane wheel, this caster provides smooth movement, optimal load-bearing capacity, and long-lasting durability. The caster is built to withstand demanding environments, making it perfect for machinery, carts, and various industrial equipment.
The 5" x 1.25" HI-TECH Ball Bearing Caster (MTG51) is the ideal choice for businesses looking for a reliable, durable, and high-performance caster to support their heavy-duty equipment. Its advanced features, including the HI-TECH polyurethane wheel, precision ball bearings, and corrosion-resistant zinc finish, ensure smooth operation, long-term reliability, and reduced maintenance costs. Whether you need a caster for machinery, carts, or equipment in harsh environments, this model offers exceptional value and performance.
This caster is perfect for a wide range of industrial applications, including use in machinery, heavy-duty carts, factory equipment, material handling systems, and more. The caster's versatility and rugged construction make it suitable for both indoor and outdoor use in industries such as manufacturing, logistics, and construction.
Our 5" x 1.25" HI-TECH Ball Bearing Caster with Expanding Adapter is manufactured to the highest standards, ensuring that it will meet the demands of even the most rigorous industrial environments. With a 3-year warranty and certifications for safety and quality, this caster provides peace of mind and assurance of long-term performance. We are committed to delivering exceptional products that add value to your business and help optimize your operations.
This Colson 2.05267.95 5" x 1.25" HI-TECH 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 6.31". 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).
$73.00
| Identification | |
| Brand | colson header |
| Dimensions & Mounting | |
| Wheel Diameter | 5" |
| Wheel Tread Width | 1-1/4" |
| Overall Height | 6.31" |
| 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 |
5" x 1-1/4" Thermo Plastic Rubber Swivel Caster – 315 lb | CasterHQ
5" x 1-1/4" · 315 lbs
$23
5" x 1.25" FX Formula XS TPR Rigid Caster – 315 lb | CasterHQ
5" x 1-1/4" · 315 lbs
$17
5" x 1.25" TPR FX Formula XS Swivel Caster – 315 lb | CasterHQ
5" x 1-1/4" · 315 lbs
$18
View all 5′ 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 | |
|---|---|---|---|---|---|---|
| 300 lbs | 5" × 1-1/4"Polyurethane | Swivel | 6.31" | $73.00 | Viewing | |
| 315 lbsHeavier duty | 5" × 1-1/4"Gray Rubber | Swivel | 6-1/4" | $23.00 | View → | |
| 315 lbsHeavier duty | 5" × 1-1/4"Gray Rubber | Rigid | 6-1/4" | $17.00 | View → | |
| 315 lbsHeavier duty | 5" × 1-1/4"Gray Rubber | Swivel | 6-1/4" | $18.00 | View → | |
| 325 lbsHeavier duty | 5" × 1-1/4"Polyurethane | Rigid | 6-1/4" | $20.00 | View → |




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