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6" x 3" Poly-on-Iron Casters

Plate sizes: 3-3/8 x 5-1/4, 4-1/2 x 6-1/4Bolt holes: 2-7/16 x 4-15/16 slotted to 3-3/8 x 5-1/4Diameter: 6, 8, 10 inTread: 3 inCapacity: up to 3,000 lb
Casters on the 3-3/8 x 5-1/4 plate pattern suit warehouse carts on epoxy and smooth concrete. Typical builds show wheel diameters 6, 8, 10 in, polyurethane treads, and capacities 2,000 to 3,000 lb. Harder poly rolls easier on smooth epoxy; softer poly cushions vibration on uneven slabs. Larger plates spread bolt stress on thick frames under continuous tow abuse. Confirm stem length and thread pitch on stem mounts so the shoulder seats flush in the boss.

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