Pneumatic caster wheels for ground that fights back.

A pneumatic wheel is a tyre, with everything that implies. The air cushion gives the smoothest ride of any caster wheel over rough ground, spreads load across soft surfaces instead of digging in, and protects fragile loads on outdoor moves. For equipment that crosses yards, construction-adjacent ground, rougher farm and garden-centre surfaces, or historic floors that cannot take point loads, pneumatics solve a problem no solid wheel solves as well.

The honest limitations

• Freight volume. Air-filled wheels ship mostly air. On long-haul container freight, the cubic cost per unit is the highest in the caster world — the economics only work where the application truly needs the cushion.
• Maintenance. Tyres need pressure checks and can puncture. A fleet on pneumatics is a fleet with a maintenance line item.
• Standing loads. Under-inflated tyres under standing load deform and age; equipment that parks loaded for months belongs on solid wheels.
• Capacity per size. For a given diameter, a pneumatic carries less than a solid PU wheel and rolls with more resistance on smooth floors.

Because of the freight economics, we do not hold this line as a standing programme: it is quoted per application, usually as part of a mixed order or for buyers whose use case clears the volume cost. If your application is indoor or smooth-floor, we will point you at the rubber line — its shock absorption covers most of what buyers actually ask pneumatics for, at a fraction of the shipped volume.

Where pneumatics are right

Outdoor equipment on gravel or broken ground; load-sensitive moves across mixed surfaces; garden, agricultural and events equipment; historic-building and stage work where floor point-loads are restricted. Send the surface description and load in the RFQ — for this line, the ground is the specification.

The specification we lock before quoting

A quotation is only comparable when the specification underneath it is fixed. For this line — as for every CASTOVELLA line — the written quotation locks these six variables, and the production sample is checked against them before bulk production is approved:

• Wheel diameter and width — width is both a performance variable and the US tariff classification variable; it is measured on the sample, not copied from a catalogue.
• Tread material and hardness — stated as a Shore hardness range, so the bulk shipment can be checked against the approved sample.
• Bearing type — plain, roller or precision ball bearing, named on the quotation; bearing swaps are the most common silent downgrade in this industry.
• Fork and top plate thickness — measured in millimetres and stated, because fork flex is where cheap heavy duty casters fail first.
• Load capacity and test method — capacity per caster with the test convention named (EN 12532 / ANSI ICWM), never a bare number.
• Finish and hardware — zinc plating, stainless grade or coating stated per component, not per marketing photo.