Product Catalog
Aviation / GSE Casters — Dual-Wheel, Oscillating-Axle Construction for Ground Support Equipment
Updated 2026-11
Aviation ground support equipment (GSE) punishes casters in a specific way: heavy concentrated loads on uneven apron and hangar floors, over expansion joints and hoses, often with the load deck not level. The published manufacturer answer is a dual-wheel swivel series built around an oscillating, compensating wheel axle — both wheels stay on the ground over an obstacle — with cushion suspension leveling, described by the manufacturer as setting the standard for the aviation ground support industry and standing up to rigorous conditions.
The published construction details show why the class is special: 1-inch-thick heat-treated 1045 steel top plate and yoke base, an 11-inch precision-machined load raceway on tapered roller bearings, a 2-inch heat-treated king bolt, box-section welded legs — and factory-installable options including a retrofit spring assembly and field-installable swivel lock and face contact brake. Published series ratings reach 20,000 lb on a 12 x 12 inch plate. Our supply path is own production plus outsourcing; per-configuration ratings are confirmed at quotation.
Specifications
| Type | Heavy dual-wheel swivel casters for aviation ground support equipment; oscillating compensating axle keeps both wheels grounded |
|---|---|
| Reference series band (manufacturer reference) | Published aviation/GSE dual-wheel series to 20,000 lb on a 12 x 12 in plate — series band, never a tenant family promise |
| Structure (manufacturer reference) | 1 in thick 1045 AISI heat-treated top plate and yoke base; 11 in precision-machined load raceway with 5/8 in steel tapered roller bearing; 2 in heat-treated king bolt; 1/2 in box-section welded legs |
| Options (manufacturer reference) | Spring assembly retrofittable at a later date (consult factory); swivel lock and face contact brake field-installable; factory options without added lead time |
| Duty class (industry reference) | Aviation, aerospace and ground support named as a distinct heavy-duty caster duty class; aircraft engine stands and GSE among kingpinless heavy-service applications |
| Lead time | 15–20 days (custom configurations 30–40 days) |
| MOQ | 200 pieces (standard catalog items ship in smaller quantities) |
| Warranty | 18 months |
Structure, options and the 20,000 lb figure are published manufacturer series references for class positioning, never a tenant family rating. Ratings for your configuration are stated on the quotation.
Applications & Selection
What the oscillating axle buys on an apron
A fixed dual-wheel axle rides an obstacle like a table edge: one wheel climbs, the load rocks, and the second wheel slams down. The oscillating, compensating axle in the published aviation design lets each wheel travel independently so both stay loaded over uneven ground — combined with cushion suspension leveling, this is what keeps a loaded GSE trailer stable crossing apron joints and hoses. It is a load-distribution mechanism, not a comfort feature: shock that never reaches the frame cannot fatigue it.
The published construction list reads as a checklist of where the load goes: heat-treated 1045 plate and yoke (impact), an 11-inch raceway on tapered rollers (swivel under load), a 2-inch king bolt (the steering path), box-section legs (column strength). Specifying against that checklist — plate thickness, raceway type, king-bolt diameter — is the honest way to compare classes instead of comparing capacity numbers alone.
The duty class is real: published industry guidance names aviation and ground support among the caster duty classes, and aircraft engine stands and GSE among kingpinless heavy-service applications. Our supply path is own production plus outsourcing; your per-configuration rating is confirmed at quotation.
Frequently Asked Questions
Why dual wheels for ground support equipment?
Two wheels halve the per-wheel load and bridge small obstacles and joints, and with an oscillating compensating axle each wheel stays grounded over uneven apron surfaces. Published aviation series ratings reach 20,000 lb on this construction — a capacity single-wheel swivels reach only with far larger geometry.
Can a spring be added later?
On the published reference series, yes: the manufacturer states a spring assembly can be retrofitted at a later date (consult factory), and swivel lock and face contact brake are field-installable. If retrofit is your plan, say so at RFQ so the housing and axle are prepared for it.
What should my aviation/GSE caster RFQ include?
Load per caster and per wheel pair, deck height limits, floor profile (joints, slopes, hoses), towing speed, swivel lock and brake requirements, spring or no spring, top plate and bolt pattern, and environment (hangar chemicals, weather exposure). Ask which published construction points — plate thickness, raceway, king bolt — your configuration actually gets.
Ordering & Documentation
Documents
Every order ships with a packing list and commercial invoice. Dimensional drawings (plate, bolt pattern, mounting height, swivel radius) are available on request; axle, raceway and bolt specifications for the batch are stated on the quotation.
Quotation
A quotation needs: load per caster, floor profile and towing duty, deck height, brake/lock and spring requirements, plate and bolt pattern, and quantity. The confirmed quotation states the rating for your configuration — series references are positioning, the quotation is the commitment.
Sample & supply
Standard constructions are produced to order with an MOQ of 200 pieces; smaller trial quantities of catalog items can ship in some sizes — ask with your RFQ. Lead time is 15-20 days standard, 30-40 days for custom configurations.
Storage & shipping
Store under cover with raceways greased (zerk fittings on the published design serve this in service). Before installation, verify swivel travel and both wheels ground-contact on a level pad; any bind in the oscillating axle is flagged before the caster enters service.