There are plenty of reasons to marvel at these enormous 16-inch, 152-pound casters.
For starters, moving one around the shop probably counts as cardio. But the real magic is in how they turn.
Hamilton’s XC0404-R and XC0404-L are a matched pair of massive, spring-loaded steering casters built for demanding towed applications. Each uses a 16" x 5" press-on rubber wheel with a 1" ball bearing, plus a welded steering arm that connects to the cart’s mechanical steering system. The result is something much closer to automotive steering than the free-swiveling caster most people picture.
As the trailer tongue moves, it directs the left- and right-hand casters together, much like a steering wheel directs the front wheels of a car. The system uses Ackermann-style steering geometry, helping the wheels follow the proper paths through a turn instead of fighting each other for direction. Check out this article for reference.
But controlled tracking is only half the tale. Autosteer casters under the corners keep your payload super stable—even if it's tall or top-heavy—giving you a leg up on four-wheel or fifth-wheel setups. Add spring loading to soak up bumps, and you've got a system built for the kind of industrial abuse that makes ordinary casters rethink their career choices
There’s another engineering wrinkle hiding in the numbers. In this towed application, each caster is rated at about 2,900 pounds. That capacity isn’t a limitation of the caster structure itself—it’s tied to the 16" x 5" press-on rubber wheel installed on it. With a higher-capacity wheel, the same basic caster design could be rated up to 5,000 pounds.
That distinction is classic Hamilton engineering: capacity isn’t just about the size of the caster. It’s about the complete assembly—and making sure every component is right for the job it will actually endure. Because real capacity isn’t about what survives one impressive moment.
It’s about what keeps surviving turn after turn, impact after impact, shift after shift.
Still trying to wrap your head around Auto Steer vs. Caster, Four-Wheel, or Fifth-Wheel steering setups? Contact a Hamilton expert today.
XC0404-R and XC0404-L
Wheel Size & Type:
16” x 5” Press-On Rubber
Bearing Type:
1" Sealed Ball Bearings
Weight:
152 lbs. (per caster)
Load Capacity For Towing Applications:
2900 lbs.