Up to 350 lbs
Up to 6,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
High-capacity loads
Shock absorbing
Corrosion resistant
Outdoor / rough terrain
OEM replacements
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.
Ergonomic casters are designed around one measurable goal: reduce the force it takes a person to start, steer, and stop a loaded cart. Lower rolling resistance, smoother swivel, better tracking — up to 1,600 lb per caster. The payoff is fewer strain injuries and faster, less fatiguing material handling.






























Hamilton's Ergonomic series cuts push and pull force on manual carts. The Ergo-Tech donut polyurethane wheel runs an 87A durometer on an aluminum core, a softer tread that deflects to reduce starting and rolling effort while staying non-marking. Size the wheel diameter to the load and the floor.
| Config | Size | Capacity | Wheel | Best For |
|---|---|---|---|---|
| Ergo-Tech donut, light | 5" | up to 700 lb | Ergo-Tech 87A donut polyurethane on aluminum | Lighter ergonomic carts, frequent manual moves |
| Ergo-Tech donut, standard | 6" | up to 1,000 lb | Ergo-Tech 87A donut polyurethane on aluminum | General ergonomic cart and rack programs |
| Ergo-Tech donut, heavy | 8" | up to 1,400 lb | Ergo-Tech 87A donut polyurethane on aluminum | Heavier ergonomic carts, longer push distances |
| Ergo-Tech donut, maximum | 8" | up to 1,600 lb | Ergo-Tech 87A donut polyurethane on aluminum | Top of the ergonomic range at full rated load |
Representative Hamilton configurations by capacity tier. Exact per-size load ratings, wheel diameters, and mounting are confirmed on your quote. Call 844-439-4335.
Divide total cart and payload weight by the number of casters, then size to a caster rated at least 25% above that working load. The Ergonomic series tops out at 1,600 lb per caster. Staying inside the margin keeps the donut tread in its designed deflection range, which is where the push-force reduction comes from.
The Ergo-Tech wheel uses an 87A donut-profile polyurethane on an aluminum core. The softer tread deflects under load to lower starting force and absorb floor shock, while the aluminum core keeps swivel weight down. It drives the push-force reduction, so do not substitute a harder polyurethane if ergonomics is the goal.
Specify a top-plate swivel with a precision raceway for the lowest steering effort, and add total-lock brakes where carts must hold position. Larger wheel diameters roll over floor joints with less effort, so step up in diameter before adding force. Match the plate and bolt pattern to your cart for a direct retrofit.
The Ergonomic series is built for indoor plant floors and facilities running an ANSI or HFES program where push force is measured and capped. Larger, softer wheels lower both initial and sustained force. For the same load, an 8 inch Ergo-Tech wheel takes less force to start than a 5 inch.
An ergonomic caster lowers the force to start, push, and steer a manual cart. The levers are a larger wheel diameter, a softer tread that deflects under load, and a low-friction swivel. This series uses an 87A Ergo-Tech donut polyurethane wheel on aluminum.
Ergo-Tech is Hamilton's 87A donut-profile polyurethane wheel on an aluminum core. The softer tread and rounded profile deflect under load to reduce starting force and absorb floor shock, and the aluminum core keeps swivel weight low.
Up to 1,600 lb per caster. Lighter 5 inch builds cover roughly 700 lb, 6 inch around 1,000 lb, and 8 inch reach 1,400 to 1,600 lb. Stay inside a 25% margin so the donut tread holds its deflection.
The reduction depends on load, floor, and wheel diameter, so measure it with a force gauge. A larger, softer wheel lowers push force, and stepping up diameter is usually the biggest factor, which is why the 8 inch starts easier than the 5 inch.
Not by itself. Push force is governed by wheel diameter, tread hardness, and swivel friction, not the load rating. A small, hard wheel can push harder than a large, soft one. Choose wheel geometry first, then confirm the rating covers your load.
Yes. The series suits facilities that measure and cap push and pull force under an ANSI or HFES program. Specify the largest practical wheel diameter and a low-friction swivel, and document before and after readings. Call 844-439-4335 for help.
Part of the full Hamilton Casters range. Compare related Hamilton series:
Spec guide: Ergonomic Casters & Push Force →


