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 Spinfinity ZFWH Casters w/ UltraGlide Ergo Wheels · Up to 2,200 lb · 4"–6" · Polyurethane

Custom made to order. All sales final.

Each Hamilton product is custom manufactured for your order (lead time is shown on each product page). Please confirm all specs before checkout, since made-to-order items aren't eligible for returns, exchanges or refunds. Need help? Call 844-439-4335 or email info@casterhq.com and we'll verify fit for you.

Diameter: 4 to 6 inTread: 2 inCapacity: 720 to 1,500 lb per casterPlate sizes: 4 x 4-1/2, 4 x 5

This page lists four polyurethane casters with 4 to 6 in wheels, rated 720 to 1,500 lb each, made by Hamilton. The common top plate is 4 x 4-1/2 in, with 4 x 5 in also offered, in both swivel and rigid and without brakes. Two examples are a Hamilton S-ZFWH-4SWC85 4 x 2 in UltraGlide swivel kingpinless caster rated 720 lb and a Hamilton R-ZFWH-6SWC95 6 x 2 in UltraGlide rigid kingpinless caster rated 1,500 lb.

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3 types

Wheel = wheel diameter · capacity is per caster.

Spinfinity ZFWH Caster Series with UltraGlide Ergo Wheels

The new UltraGlide™ Ergo represents Hamilton’s latest modular wheel design to reduce the amount of energy needed to move loads in manual or powered applications.

The new UltraGlide™, like its twin-wheel predecessor, features independent swivel surfaces that eliminates scrubbing, making it much easier to turn. The wheel assembly also includes split outer raceways to minimize friction that provides low startup and maintain forces.

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 Spinfinity ZFWH Casters w/ UltraGlide Ergo Wheels · Up to 2,200 lb · 4"–6" · Polyurethane

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Spinfinity ZFWH Caster Series with UltraGlide Ergo Wheels