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 the functionality and longevity of your caster assemblies with the Durastar 3/8-24" OD x 2-1/4" Zerk Axle. Crafted for precision and durability, this axle is equipped with a built-in Zerk fitting, enabling quick lubrication and reduced maintenance downtime—especially in demanding environments.
Whether you’re replacing an existing component or customizing your caster setup, you can choose between 1/4" or 7/16" nylon insert lock nuts to ensure optimal retention under movement and stress. This combination is perfectly suited for Durastar's 21, 22, and 24 Series casters, delivering smooth performance and structural security across various applications.
From warehouse carts to medical equipment and industrial utility systems, this axle and nut set offers the durability and reliability professionals depend on. Trust in Durastar’s engineering excellence to keep your mobility systems running smoothly.
Upgrade your caster assembly with the Durastar Zerk Axle and Nylon Insert Nut Set — the ideal solution for long-lasting, low-maintenance mobility.
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 3/8-24" OD x 2-1/4" Zerk Axle is a precision-engineered axle solution designed to enhance the performance and reliability of your caster assemblies. Whether you're outfitting new equipment or replacing worn components, this axle is built to meet the demands of high-performance mobility systems.
Outfitted with a Zerk grease fitting, this axle supports regular lubrication, reducing friction, wear, and overall maintenance costs. Its fine-thread 3/8-24" design ensures a secure, tight fit—ideal for smooth, vibration-free operation in heavy-duty applications.
Customers can select from 1/4" or 7/16" nylon insert lock nuts based on their equipment’s fastening requirements. These nylon-insert nuts resist loosening due to vibration, ensuring long-term stability and safety for industrial carts, warehouse systems, or medical equipment.
This axle is fully compatible with Durastar's 21, 22, and 24 Series casters, making it a dependable solution for maintenance teams and OEM manufacturers alike. From its corrosion-resistant finish to its dependable construction, every feature is developed with durability and performance in mind.
Whether you're upgrading casters for a rugged industrial application or outfitting mobile platforms for critical use, this Zerk axle delivers the strength, serviceability, and secure fit professionals expect from the Durastar name.
This caster runs a Nylon wheel. Nylon resists chemicals and moisture and carries high loads, which suits washdown and wet environments.
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 Nylon wheel performs best on smooth, hard industrial floors. For non-marking or clean-environment needs, ask us about matching tread options.
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).
$5.00
| Identification | |
| Brand | Durastar |
| Load & Performance | |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Nylon |
| Frame Material | Zinc Plated Steel |
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