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.

Hamilton Casters w/ Ultralast Wheels · 4"–5" · 900–1,050 lb · Polyurethane

Diameter: 4, 5 inTread: 2 inCapacity: up to 1,050 lb

This collection gathers plate-mount casters used on warehouse carts, racks, and everyday plant fixtures. You will see wheel diameters 4, 5 in and capacities 900 to 1,050 lb across the SKUs listed below. Bring plate and stem measurements when replacing unmarked casters so the new corners sit level. Confirm stem length and thread pitch on stem mounts so the shoulder seats flush in the boss.

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2 types

Wheel = wheel diameter · capacity is per caster.

Heavy Service Caster Series with Ultralast Wheels

Hamilton's Ultralast™ wheel – represents the highest performing urethane we’ve ever offered. The Ultralast™ wheel possesses “off the chart” performance characteristics— specifically in the areas of thermal retention and rollability. Heat buildup in polyurethane, due to high loads or continuous duty applications, is the most common cause for material breakdown over the life of the wheel. Ultralast™ polyurethane operates much cooler under load and at higher speeds compared to most other urethanes. The result is a simply superior dynamic performance and a longer service life.

Ultralast™ also represents the best rolling polyurethane wheel we’ve ever offered. For example, the urethane’s rebound test results, which can be a proxy for rollability, measures 110% higher than Duralast®, 60% higher than PolySoft® and 20% higher than Vulkollan®. So the combination of Ultralast™’s very low thermal retention and extremely high rollability characteristics results in an ultra high performance wheel that’s designed to outperform and outlast other polyurethanes in the marketplace.

BHP: 1-3/4″ × 2-7/8″, slotted to 3″

BHP: 1-3/4″ × 2-15/16″ slotted to 2-3/8″ × 3-3/8″

BHP: 2-5/8” X 3-5/8” (Slotted to 3” x 3”)

BHP: 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4"

(3″ Wide Casters), Industry-Standard

BHP: 3-3/8" x 5-1/4" slotted to 4-1/8" x 6-1/8"

BHP: 4-1/8" x 6" slotted to 4-1/2" x 6-1/8"

View All • 21 Plate Sizes

Plate Casters

Stem Casters

Stainless Casters

Ergonomic Casters

Leveling Casters

Hamilton Casters w/ Ultralast Wheels · 4"–5" · 900–1,050 lb · Polyurethane

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Heavy Service Caster Series with Ultralast Wheels