4" Stainless Steel Top Plate Rigid Caster with Performa Rubber (Flat/Conductive) Wheel - D4.04108.459 COND SS WB29

About This Caster - D4.04108.459 COND SS WB29

Choose this 4-inch Defender D4 rigid when a heavier cart has to drain static in an ESD-sensitive or flammable area and is moved slowly.

The roller bearing gives this the most load capacity of the three bearings offered, carrying weight toward the soft-rubber limit at a slow, controlled pace, while the conductive flat-tread Performa wheel carries static charge from the cart through the caster to ground rather than letting it build up. That protects electronics and reduces spark risk around solvents or fine dust. The flat profile gives a stable footprint, and the soft rubber rolls quietly and stays easy on floors, though the conductive compound can mark a light finished surface. The stainless steel frame suits wash-down service. Rigid means it tracks straight. It serves from -45 to 180°F.

Ideal applications

• Heavier ESD-sensitive carts that must drain static at slow speed
• Flammable or solvent areas needing static control under load
• Straight-tracking rear corners with a stable conductive footprint

Verify the conductive resistance spec and that the full caster path to ground is conductive, plus the 5-5/8-inch mount height, before ordering.

Pairs with: matching conductive Defender D4 casters on all four corners so the loaded cart stays grounded, including the conductive swivel 49MI42VT-02.

Wrong fit? No static concern, just a quiet non-marking wheel? See the grey flat-tread roller rigid 49MI42G-02 in the Colson collection.

Also in this family: the precision-ball conductive rigid 49MC42GT-02, or the full Colson collection.