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 Durastar 1/2" ID x 3/4" OD x 1-7/8" Length Steel Spanner Bushing is engineered to provide dependable axle spacing and alignment for high-performance caster assemblies. With a precisely machined inner diameter of 1/2" and an outer diameter of 3/4", this steel bushing ensures a secure fit within standard bearing hubs, preventing lateral movement and reducing long-term stress on axle shafts.
Built from heavy-duty steel and coated with a corrosion-resistant zinc finish, this spanner bushing withstands harsh operating environments commonly found in manufacturing, warehousing, and logistics. Its 1-7/8" extended length accommodates wider hubs, making it a reliable choice for both OEMs and repair technicians seeking consistent and maintenance-free performance.
Whether you're upgrading casters on a utility cart or replacing parts in heavy-duty equipment, trust Durastar's spanner bushings to deliver precision, stability, and durability where it matters most.
Choose the Durastar Steel Spanner Bushing for your next build or replacement project and ensure your caster assemblies perform at their best—durable, reliable, and engineered for excellence.
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 1/2" ID x 3/4" OD x 1-7/8" Length Steel Spanner Bushing is engineered for professionals seeking dependable axle support in caster wheel installations. Precision-machined for a 1/2" inner diameter and a 3/4" outer diameter, this bushing delivers a tight fit and optimal spacing within standard caster assemblies.
Constructed from industrial-grade steel and finished with a corrosion-resistant zinc coating, this bushing stands up to heavy-duty use in rugged environments such as warehouses, production floors, logistics centers, and commercial carts. Its 1-7/8" overall length accommodates wider hubs and ensures enhanced alignment between the wheel and axle, reducing lateral play and promoting smoother performance under load.
Whether you're assembling a new cart, repairing equipment, or upgrading your caster system, this spanner bushing delivers consistent results. It helps distribute weight more evenly, protects bearings from excess wear, and maintains axle alignment—critical for preventing deformation and downtime.
Backed by Durastar’s reputation for reliable manufacturing, this component is designed for ease of installation and long-term service life. It's a smart choice for maintenance teams, OEMs, and anyone needing a reliable solution to maintain spacing within caster wheels and other rotating assemblies.
Engineered to perform under pressure, the steel spanner bushing resists crushing, deformation, and rust—making it ideal for dynamic, high-load environments. With minimal maintenance and a universal fit for 1/2" ID wheel bearings, it’s the ideal upgrade for your mobility system.
From design to performance, every feature is optimized for strength, stability, and user safety—because reliable parts mean fewer breakdowns and more productivity.
Choose the Durastar Steel Spanner Bushing to maximize caster performance and protect your investments. When precision matters, trust a solution that delivers on quality and durability—job after job.
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.).
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).
$6.00
| Identification | |
| Brand | Durastar |
| Dimensions & Mounting | |
| Mount Style | Plate |
| Load & Performance | |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Frame Material | Zinc Plated Steel |
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