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.
Upgrade your mobility systems with the Durastar Bolt-On Caster Pad Kit, engineered to accommodate industry-standard 4" x 4-1/2" top plate casters. Whether you’re fabricating a new equipment base or retrofitting existing carts, this mounting plate provides a reliable, heavy-duty solution for securing casters without the need for complex welding or fabrication tools.
Fabricated from high-strength steel and pre-drilled for easy alignment, the Durastar bolt-on pad kit promotes precise caster installation, ensuring optimal stability and maneuverability under heavy loads. This mounting kit is ideal for industrial carts, toolboxes, maintenance platforms, and material-handling equipment.
Engineered with performance and efficiency in mind, this caster pad kit enables a seamless upgrade path for facilities looking to enhance their equipment’s mobility while maintaining structural integrity and safety. Designed for technicians, fabricators, and facility managers who demand dependable results.
Choose the Durastar Bolt-On Caster Pad Kit to simplify your caster installation process and boost equipment performance. A trusted solution for heavy-duty mobility in demanding environments.
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 Durastar Bolt-On Caster Pad Kit is engineered to deliver strength, convenience, and precision in caster mounting applications. Designed specifically for 4" x 4-1/2" top plate casters, this bolt-on mounting solution eliminates the need for welding, making it ideal for both new equipment builds and retrofit projects. Its user-friendly design significantly reduces installation time while ensuring maximum reliability.
Made from high-strength steel, the pad kit withstands tough working conditions and supports the long-term demands of industrial, warehouse, and commercial environments. The pre-drilled holes offer compatibility with standard 2-5/8" x 3-5/8" to 3" x 3" bolt patterns, allowing seamless integration with a wide range of caster types. With a 3/8" attaching bolt diameter, it ensures a snug, secure fit for dependable performance.
This caster mounting plate enhances equipment mobility without compromising on strength or safety. Whether you're upgrading carts, toolboxes, mobile workstations, or platforms, this kit simplifies the process and adds long-term value to your operations. It's a trusted choice for maintenance teams, industrial fabricators, and OEMs who prioritize durability and operational efficiency.
Choose the Durastar Bolt-On Caster Pad Kit for a fast, reliable, and professional-grade solution to your mobility needs. Whether you're outfitting new equipment or upgrading your current setup, this kit is built to perform.
This caster uses a top-plate mount with a 4" x 4-1/2" plate and a 2-5/8" x 3-5/8" bolt pattern. 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.).
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).
$14.00
| Identification | |
| Brand | Durastar |
| Dimensions & Mounting | |
| Wheel Diameter | 4" |
| Wheel Tread Width | 4-1/2" |
| Plate Size | 4" x 4-1/2" |
| Bolt Hole Pattern | 2-5/8" x 3-5/8" |
| Mount Style | Plate |
| Load & Performance | |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| 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
4" x 1.25" TPR Swivel Caster – 300 lb | 2-3/8" x 3-5/8" Plate | CasterHQ
4" x 1-1/4" · 300 lbs
$16
View all plate casters →
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 | |
|---|---|---|---|---|---|---|
| — | 4" × 4-1/2" | — | — | $14.00 | Viewing | |
| 300 lbsHeavier duty | 4" × 1-1/4"Polyurethane | Swivel | 5-1/8" | $19.00 | View → | |
| 300 lbsHeavier duty | 4" × 1-1/4"Polyurethane | Swivel | 5-1/8" | $19.00 | View → | |
| 300 lbsHeavier duty | 4" × 1-1/4"Gray Rubber | Swivel | 5-1/8" | $16.00 | View → | |
| 325 lbsHeavier duty | 4" × 1-1/4"Polyurethane | Swivel | 5-1/8" | $18.00 | View → |




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