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.

Enhance your operational efficiency with the Colson Casters 4" x 1.25" Polyolefin Ball Bearing Caster with Expanding Adapter (MTG41). This caster is designed for heavy-duty use, providing smooth, reliable movement even under substantial loads. The durable Polyolefin wheel, coupled with a precision ball bearing, ensures that your equipment moves with ease while minimizing friction and wear.
Equipped with an expanding adapter that fits 7/8" to 15/16" inside diameter round tubing, this caster is incredibly versatile and suitable for a wide range of applications, including material handling, industrial equipment, and various types of carts. Whether you're working in a factory, warehouse, or distribution center, this caster offers the strength and durability needed for tough environments.
At Colson Casters, quality and innovation are at the heart of our designs. This 4" Polyolefin Ball Bearing Caster is no exception, combining precision engineering with durable materials for exceptional performance. Trust Colson Casters for all your mobility solutions, and experience the difference in your operational efficiency today.
Choose Colson Casters for your heavy-duty mobility needs and discover the reliable performance that industry professionals trust. Elevate your operations with the 4" Polyolefin Ball Bearing Caster with Expanding Adapter (MTG41) today.
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 Colson Casters 4" Polyolefin Ball Bearing Caster with Expanding Adapter (MTG41) is designed for superior mobility and long-lasting performance in heavy-duty applications. Engineered with a high-quality Polyolefin wheel and a precision ball bearing system, this caster delivers smooth, low-friction movement that is essential for heavy loads. With a versatile expanding adapter that fits tubing from 7/8" to 15/16" in diameter, it provides the flexibility needed for various industrial, medical, and commercial uses. Built for durability, reliability, and smooth performance, it supports loads up to 2,500 lbs, making it an ideal solution for tough environments.
Colson Casters stands out as a leader in the caster and wheel industry, offering products that are not only reliable but also designed to withstand the demands of various industries. This 4" Polyolefin Ball Bearing Caster with Expanding Adapter (MTG41) is built to perform in the toughest conditions, providing exceptional functionality, durability, and flexibility. Whether you're equipping industrial machinery, material handling carts, or medical equipment, Colson Casters is your trusted partner for mobility solutions that work.
This caster is engineered for use in a variety of applications across multiple industries. Some common uses include:
Colson Casters is known for their commitment to quality and customer satisfaction. This caster is backed by decades of experience in caster manufacturing, offering you a mobility solution you can trust. The combination of durable materials, precision design, and high weight capacity ensures that this caster will stand up to the demands of your workplace while keeping your operations running smoothly.
For high-performance, heavy-duty mobility, the Colson Casters 4" Polyolefin Ball Bearing Caster with Expanding Adapter (MTG41) is the solution you need. Combining durability, smooth movement, and easy adaptability, this caster is engineered to meet the demands of the toughest applications. Trust Colson Casters for reliable, long-lasting mobility solutions that ensure your operations run smoothly and efficiently.
This Colson MTG41 4" x 1.25" Polyolefin Caster – 2,500 lb is rated to 2500 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 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).
$62.00
| 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 | 2500 lbs |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Polyolefin |
| Frame Material | Zinc Plated Steel |
4" x 2" Solid Polyurethane Swivel Caster Set – 1,400 lb | CasterHQ
4" x 1-1/4" · 1400 lbs
$95
4" x 1.25" Semi-Steel Swivel & Rigid Caster Set – 1,400 lb | CasterHQ
4" x 1-1/4" · 1400 lbs
$67
4" x 1.25" Semi-Steel Swivel Locking Caster Set – 1,400 lb | CasterHQ
4" x 1-1/4" · 1400 lbs
$110
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 | |
|---|---|---|---|---|---|---|
| 1400 lbsLighter duty | 4" × 1-1/4"Cast Iron | Swivel + brake | 5-1/8" | $110.00 | View → | |
| 1400 lbsLighter duty | 4" × 1-1/4"Cast Iron | Swivel | 5-1/8" | $90.00 | View → | |
| 2500 lbs | 4" × 1-1/4"Polyolefin | — | 5.25" | $62.00 | Viewing |



Search
