Up to 350 lbs
Up to 7,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
Shock absorbing
Outdoor / rough terrain
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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.
Custom made to order. All sales final.
Each Hamilton product is custom manufactured for your order and ships in about 4-6 weeks. Please confirm all specs before checkout, since made-to-order items aren't eligible for returns, exchanges or refunds. Need help? Call 844-439-4335 or email info@casterhq.com and we'll verify fit for you.
Free CAD files · no login, no email
STEP .step most common3D solid for SolidWorks, Inventor, Fusion 360, Creo, NXReference geometry. Free for design use; redistribution or resale prohibited.
Product Overview:
Introducing the S-7718-SPRT Hamilton Ground Support Swivel Caster - the epitome of robustness and functionality for ground support activities. Designed with precision, it boasts Dual 18" Heavy Duty Solid Pneumatic Tires suitable for various terrains, ensuring smooth mobility and optimal performance.
Whether it's for airport ground support, industrial transport, or heavy-duty logistics, the S-7718-SPRT Hamilton Caster is your go-to choice for reliability and performance.
Invest in a caster that promises efficiency, durability, and superior design. With its pneumatic tires and precise bearings, you're not just buying a product but a long-term solution for all your heavy-duty ground support needs.
Ensure smooth operations with the best in class, the S-7718-SPRT Hamilton Swivel Caster.
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
Because of its size and weight, this item typically ships LTL freight on a pallet. Smaller add-on items may ship parcel. Freight cost is calculated by destination and shown before payment, or quoted for large orders.
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 S-7718-SPRT Hamilton Ground Support Swivel Caster is a hallmark of quality and durability. Specifically designed for ground support operations, its robust construction and innovative features ensure it stands out in demanding environments.
Opting for the S-7718-SPRT Hamilton Caster offers a plethora of benefits:
This caster is versatile and can be effectively used in:
When it comes to ground support, the choice of equipment plays a pivotal role in determining efficiency. The S-7718-SPRT Hamilton Caster is not just a product; it's a promise of unparalleled quality, durability, and excellence in performance. With its top-tier features and the trusted Hamilton brand behind it, users are guaranteed an unmatched experience.
This Hamilton S-7718-SPRT 18" Dual Pneumatic Swivel Caster – 1-1/4" Roller Bearing is rated to 5900 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 Rubber wheel with a 5-1/8" tread width. Rubber absorbs shock and protects floors, and runs quietly, which suits noise-sensitive and light-to-medium duty use.
This caster uses a top-plate mount with a 8-1/2" x 8-1/2" plate and a 7" x 7" bolt pattern. 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 -30°F to 120°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 Rubber wheel performs best on rough, uneven, or outdoor surfaces such as asphalt, gravel, and cracked concrete. For non-marking or clean-environment needs, ask us about matching tread options.
The overall height (floor to top of plate or stem) is 20-5/8". 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).
$3,749.00
| Identification | |
|---|---|
| Part Number / SKU | S-7718-SPRT |
| Replacement Wheel Part No | W-1850-SPRT-1-1/4 |
| Core | |
| Load Capacity | 5900 lbs |
| Wheel Diameter | 18" |
| Wheel Width | 5-1/8" |
| Floor to top of mounting plate (or stem shoulder).Overall Height (OAH)?Floor to top of mounting plate (or stem shoulder). | 20-5/8" |
| Rig Type | Swivel |
| Brake | No Brake |
| Horizontal distance from the swivel centerline (kingpin) to the wheel axle.Swivel Lead (Offset)?Horizontal distance from the swivel centerline (kingpin) to the wheel axle. | 5" |
| Mounting | |
| Mount Style | Plate |
| Plate Size | 8-1/2" x 8-1/2" |
| Center-to-center spacing of the top-plate mounting holes.Bolt Hole Pattern (BHP)?Center-to-center spacing of the top-plate mounting holes. | 7" x 7" |
| Recommended Mounting Bolt | 5/8" |
| Wheel | |
| Wheel Material | Rubber |
| Wheel Core Material | Steel |
| Wheel Color | Black Tire on White Rim |
| Bearing Type | Tapered Roller Bearing |
| Axle Diameter | 1-1/4" |
| Construction | |
| Frame / Finish | Crimson Powder |
| Temperature Range | -30°F to 120°F |
| Unit Weight | 160 lbs |
| Compliance | |
| Buy American | Yes |
Free CAD files · no login, no email
STEP .step most common3D solid for SolidWorks, Inventor, Fusion 360, Creo, NXReference geometry. Free for design use; redistribution or resale prohibited.
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 within the same duty class, all in stock.
| Casters (in stock) | Load capacity | Wheel | Type | Overall height | Price | |
|---|---|---|---|---|---|---|
| 3400 lbsLighter duty | 18" × 5-3/4"Rubber | Rigid | 21" | $1,482.00 | View → | |
| 3400 lbsLighter duty | 18" × 5-3/4"Rubber | Swivel | 21" | $2,171.00 | View → | |
| 5900 lbs | 18" × 5-1/8"Rubber | Swivel | 20-5/8" | $3,749.00 | Viewing |



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