Colson Expanding Adapter Casters · 3-1/2 to 5 in · Up to 350 lb

This collection holds Colson Expanding Adapter Casters with polyurethane, polyolefin and rubber wheels, built for light carts, racks, and stands. Casters in this collection range from 250 to 350 lb per caster. Wheels in this category range from 3-1/2 up to 5 inches in diameter with 1 to 1.312 in tread widths. The collection includes swivel and rigid models. Polyurethane (poly or urethane) treads are quiet, floor safe, and resist water and many chemicals. Polyolefin is light, low cost, and resists water and many chemicals. It is hard, so it is loud on rough floors. Rubber wheels are quiet, cushion the load, and protect floors. Soft rubber or TPR is the better pick when the floor has chips or grit. Common uses include food service, bakeries, hospitals, schools, laboratories, and material handling carts. Choose swivel casters when the cart must turn in place and rigid casters for straight travel. Polyurethane aisle: polyurethane casters. Wheel hub: replacement wheels.

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3 types

Wheel = wheel diameter · capacity is per caster.

Colson expanding adapter casters: buying guide

Video Guide Expanding Stem Casters for Square & Round Tubing

Colson expanding adapter casters in rubber, polyurethane and polyolefin, 3-1/2 to 5 in wheels, rated 210 to 325 lb per caster.

Colson expanding adapter casters by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Rubber	Polyolefin	3-1/2, 4 and 5 in	210 to 325 lb		cushioned and quiet on finished floors
Polyurethane		3-1/2, 4 and 5 in	250 to 300 lb	-45°F to 180°F	quiet, floor-friendly and long wearing
Polyolefin		3-1/2, 4 and 5 in	230 to 300 lb	-45°F to 180°F	wet and chemical areas, light to medium loads

Ratings are for single casters of Colson expanding adapter casters, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
3-1/2 x 1-1/4 in	polyolefin, polyurethane and rubber	210 to 350 lb
3-1/2 x 1-5/16 in	rubber	210 to 250 lb
4 x 1-1/4 in	polyolefin, polyurethane and rubber	250 to 300 lb
5 x 1-1/4 in	polyurethane, rubber and polyolefin	300 to 325 lb
5 x 1-5/16 in	rubber	250 lb

Choosing Colson expanding adapter casters

Load: plan on three casters carrying a four-caster cart [S2]; at 300 lb each, a common rating here, that is about 900 lb, and the 325 lb top rating covers about 975 lb.
Mount: most Colson expanding adapter casters use a 1 x 5 in top plate; 2-1/2 x 3-5/8 in and 4 x 4 in plates are listed too; measure bolt hole centers on the old plate and compare.
Floor: on Colson expanding adapter casters, rubber and polyurethane are kinder to tile and finished floors; polyolefin rolls easier under heavy loads on smooth concrete.
Rig: swivel and rigid Colson expanding adapter casters are listed.

Related to Colson expanding adapter casters: Colson casters, Colson expanding adapter and Colson expanding adapter.

Colson expanding adapter casters questions

How much weight can Colson expanding adapter casters carry?

Single Colson expanding adapter casters are rated 210 to 325 lb; most fall between 250 and 300 lb.

What top plate do Colson expanding adapter casters use?

Most Colson expanding adapter casters use 1 x 5 in. Other plates on Colson expanding adapter casters: 2-1/2 x 3-5/8 in and 4 x 4 in.

What wheel material is most common on Colson expanding adapter casters?

Rubber leads on Colson expanding adapter casters, rated 210 to 325 lb per caster. Among Colson expanding adapter casters, polyurethane is next at 250 to 300 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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