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DOUGLAS EQUIPMENTMiami · Since 1955

Outdoor · Rough floors · Ships nationwide

Pneumatic and Semi-Pneumatic Casters for Outdoor Carts

Air-filled and flat-free casters that roll over gravel, grass, pavers and cracked concrete without shaking the load. For nursery carts, event equipment, generator dollies and yard work. Tell us the terrain and load; we match the wheel and quote it.

  • Pneumatic, semi-pneumatic and polyurethane flat-free wheels
  • 6" to 12" diameters on swivel, rigid and brake rigs
  • Zinc-plated and stainless rigs for coastal use
  • Ships from our Miami warehouse across the U.S. & LatAm · will-call pickup in Miami

Family-Owned Since 1955Colson Master DistributorCustom Assembly in MiamiBBB AccreditedShips Across the U.S. & LatAm

At a glance

Specifications of the series we stock

Capacity per caster150 – 800 lb (series dependent)
Wheel diameters6", 8", 10", 12"
Tread optionsPneumatic (tube), semi-pneumatic (solid rubber), flat-free polyurethane foam
BearingsBall bearing or roller bearing hubs
Rig finishZinc-plated steel; stainless on request

Ranges published by the manufacturers for the series Douglas distributes. Confirm the exact rating for your application with our specialist before ordering.

Where it is used

Typical applications

  • Nursery, landscaping and greenhouse carts
  • Event, tent and staging equipment
  • Generator, welder and compressor dollies
  • Marina and boatyard carts
  • Construction site tool carts

Not sure which caster? Use the 60-second finder →

Direct line to a specialist

Get stock and delivered pricing

Two quick steps: what you need, then where we send the quote. A real specialist answers — no call center, no auto-responder.

  • A real person answers · No IVR
  • Stock items: will-call or shipping from Miami
  • LATAM documentation included
  • No commitment — quote first, decide after
Step 1 of 2 · What you need

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Questions buyers ask us

Pneumatic or flat-free?
Pneumatic gives the softest ride and highest capacity per diameter but can go flat. Flat-free polyurethane foam never punctures and needs no maintenance, at a slightly firmer ride. Semi-pneumatic sits in between.
Why does capacity drop on pneumatic wheels?
Air-filled tires flex under load. Manufacturers rate them lower than a hard wheel of the same size so the tire does not overheat or crawl on the rim. Size up if you tow or roll long distances.
Can I replace just the wheel on my existing rig?
Often yes, if the axle size and hub length match. Send us a photo and the measurements and we confirm the replacement wheel.
Do you stock stainless rigs for salt air?
We stock zinc-plated rigs and source stainless rigs for coastal and marina use. Tell us the environment when you request the quote.

Related

Live during business hours

Prefer to talk it through?

Call (305) 888-3700. Tell us the quantity and your ZIP code — we quote freight on the call, and availability and ship date are confirmed with your quote.

● A real person answers● Will-call in Miami