Maxi-Duty Dual

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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.

These Hamilton MDD dual wheel casters fit heavy equipment, dies, molds, and plant carts that move very heavy loads. Casters in this collection range from 4,500 to 16,000 lb per caster. Wheels are 8 to 12 in dual in swivel and rigid models. Dual wheel casters split the load over two wheels and swivel with less effort under heavy loads. Wheel options include polyurethane, nylon, phenolic, and forged steel, so match the tread to the floor and the load. Softer polyurethane or soft rubber or TPR tread is the better pick when the floor has chips or grit. Match plate size, bolt pattern, and overall height before you order. Choose swivel casters when the cart must turn in place and rigid casters for straight travel. Read the listing for the exact wheel size, overall height, and mount shown. Confirm the load rating printed on the title before you order. Heavy duty hub: heavy duty casters. Plate aisle: plate casters.

Shop by wheel material

5 types

Rubber and polyurethane favor floor protection; phenolic and steel favor heavy capacity. Compare materials →

Hamilton maxi-duty dual casters by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Polyurethane	Aluminum	6, 8, 10 and 12 in	4,500 to 13,000 lb	-50°F to 200°F	quiet, floor-friendly and long wearing
Nylon		6, 8, 10 and 12 in	8,600 to 16,000 lb	-30°F to 220°F	low rolling effort on smooth floors, handles wet areas
Cast iron		12 in	16,000 lb	-5°F to 160°F	heat, chips and heavy loads on rough floors

Ratings are for single casters of Hamilton maxi-duty dual casters, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
6 x 4 in	polyurethane	5,800 to 6,900 lb
6 x 5 in	polyurethane	7,700 to 8,100 lb
8 x 3 in	nylon and polyurethane	4,500 to 11,500 lb
8 x 4 in	polyurethane	8,100 to 8,700 lb
8 x 5 in	polyurethane	9,000 to 9,600 lb
10 x 3 in	polyurethane and nylon	5,400 to 13,100 lb
10 x 4 in	polyurethane and nylon	9,000 to 13,100 lb
12 x 4 in	polyurethane and nylon	10,200 to 16,000 lb

Choosing Hamilton maxi-duty dual casters

Load: divide the loaded weight by three for a four-caster cart [S2]. Among Hamilton maxi-duty dual casters, a 11,500 lb caster then suits about 34,500 lb, and the strongest at 16,000 lb about 48,000 lb.
Mount: most Hamilton maxi-duty dual casters use a 8-1/2 x 8-1/2 in top plate; 8-1/2 x 10-1/2 in plates are listed too; check the bolt spacing on your frame against the plate size.
Floor: on Hamilton maxi-duty dual casters, polyurethane is kinder to tile and finished floors; nylon and cast iron roll easier under heavy loads on smooth concrete.
Rig: swivel and rigid Hamilton maxi-duty dual casters are listed.

Related to Hamilton maxi-duty dual casters: industrial casters, 10 x 3 in polyurethane casters and 7 in dia. polyurethane casters.

Hamilton maxi-duty dual casters questions

How much weight can Hamilton maxi-duty dual casters carry?

Single Hamilton maxi-duty dual casters are rated 4,500 to 16,000 lb; most fall between 8,100 and 11,500 lb.

What top plate do Hamilton maxi-duty dual casters use?

Most Hamilton maxi-duty dual casters use 8-1/2 x 8-1/2 in. Other plates on Hamilton maxi-duty dual casters: 8-1/2 x 10-1/2 in.

What wheel material is most common on Hamilton maxi-duty dual casters?

Polyurethane leads on Hamilton maxi-duty dual casters, rated 4,500 to 13,000 lb per caster. Among Hamilton maxi-duty dual casters, nylon is next at 8,600 to 16,000 lb.

Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com

Sources

[S1] CasterHQ product fields (rated load, diameter, width, wheel and core material, temperature range, mount) and product descriptions for the items on this page, pulled October 20, 2026.
[S2] Preferred Equipment casters and wheels quick guide PDF (prefeq.com): load sizing on one less caster, wheel types and floor notes.

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"

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