Lumber Cart Wheels & Replacement Casters · 6"–8" · 300–1,400 lb · Polyurethane

These lumber cart casters and wheels rebuild big-box and yard lumber carts that haul long boards. Replacement casters and wheels in this collection range from about 600 to 1,400 lb each. Light Home Depot-style sets list about 300 lb per set of 4. Common sizes are 6 x 2 and 8 x 2 in polyurethane (poly or urethane), phenolic, and mold-on rubber on 4 x 4-1/2 in plates. Soft polyurethane on aluminum (~85 Shore A) or TPR is the better pick when the floor has chips or grit. Match wheel size, plate, and whether you need a full set before you order. Choose swivel casters when the cart must turn in place, rigid casters for straight travel, and add a brake when the cart needs to stay put. Capacities below are per caster unless a listing says set. Read the listing for the exact wheel size and plate shown. Cart caster aisle: cart casters. Platform truck aisle: carts platform trucks.

Wheel options

Wheel	Sizes	Rated each	Notes
Polyurethane on cast iron	6 x 2, 8 x 2 in	1,200 to 1,400 lb	Floor-friendly, long wearing, -40 to 180°F
P&H polyurethane	6 x 2 in	1,000 lb	-30 to 140°F
Phenolic	6 x 2 in	1,200 to 1,250 lb	Easy rolling, keep dry, up to 250°F
Mold-on rubber on iron	8 x 2 in	600 lb	Quietest, cushions bumps

From product fields [S1]. Sets list a total.

Replacing lumber cart casters

Check the plate. These use a 4 x 4-1/2 in top plate.
Match heights. 6 in casters stand 7-1/2 in and 8 in casters 9-1/2 in, so do not mix sizes at the same corners.
Wheel only? Replacement wheels are listed for 6 and 8 in, but measure the axle and hub length first.

Related: 6 x 2 casters and wheel parts.

Lumber cart caster questions

What casters fit a lumber cart?

Most use 6 or 8 x 2 in plate casters on a 4 x 4-1/2 in plate. Measure yours to confirm.

What is the best wheel for a lumber cart?

Polyurethane on cast iron: 1,200 lb at 6 in and 1,400 lb at 8 in, and easy on floors.

Can I replace just the wheel?

Yes. 6 and 8 in replacement wheels are listed. Match the axle size and hub length.

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.

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

Lumber Cart Wheels & Replacement Casters · 6"–8" · 300–1,400 lb · Polyurethane

Wheel options

Replacing lumber cart casters

Lumber cart caster questions

Sources