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.

18" x 9" Polyurethane Casters

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: 18 inTread: 9 inCapacity: 12,500 lb per casterPlate sizes: 8-1/2 x 8-1/2

You get two polyurethane casters here from Hamilton with 18 in wheels, rated 12,500 lb each. The top plate is 8-1/2 x 8-1/2 in on all of them, and you can pick swivel or rigid. Picks range from a Hamilton 18 x 9 in red polyurethane swivel kingpinless caster rated 12,500 lb to a Hamilton ZFMD 18 x 9 in polyurethane rigid caster rated 12,500 lb.

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

18" x 9" Polyurethane Casters

18" TerraTech Standard Wheels