A 4″ light/medium duty swivel caster pairing a flat tread phenolic wheel with a premium zinc heat treated yoke on a 4″ x 4-1/2″ top plate. It carries 400 lb, stands 5-3/4″ tall, and turns on a 1/2″ stainless steel bushing bearing, operating from -20°F to 190°F.
| Product Series | |
|---|---|
| Series Type | Light/Medium Duty |
| Caster Type | |
| Wheel Part No | WL4042B6 |
| Wheel Diameter | |
| Wheel Tread Width | |
| Hub Width | |
| Wheel Profile | |
| Wheel Tread Material | Phenolic |
| Wheel Core Material | Phenolic |
| Wheel Color | |
| Bearing Type | |
| Bearing Material | |
| Bearing Size | |
| Axle Size | |
| Load Capacity | |
| Operating Temp | |
| Overall Height | |
| Caster Finish | |
| Threadguard | |
| Attachment Method | |
| Mount Size | 4" x 4 1/2" |
| Warranty Duration | |
| Plate Hole Centers | |
| Weight | |
| Options/Features |
Where it fits. Phenolic is the workhorse tread for hot, dry environments. The wheel is molded from resin-impregnated fabric that resists most chemicals, water, and steam without softening, which is why it moves between a cooler and a hot oven without flat-spotting. Hard treads transmit floor irregularity, so specify phenolic where floors are smooth and sealed. This swivel model rotates a full 360 degrees and is normally specified two per cart with two rigid casters at the opposite end, or four per cart where the equipment has to move sideways in tight aisles.
Construction. The yoke is formed from heat-treated premium zinc-plated steel for corrosion resistance. It mounts on a 4″ x 4-1/2″ top plate with 3-1/8″ x 2-1/16″ bolt-hole centers. A 1/2″ stainless steel bushing rides on a 1/2″ axle for smooth, low-effort rolling.
Load and duty. The 400 lb rating is per caster. Standard practice is to size a four-caster set assuming three casters carry the load, so this model supports roughly a 1,200 lb cart with margin for shock loading and uneven floors. Continuous operating range is -20°F to 190°F.
About Series 20. Series 20 spans our light and medium duty caster range, from 150 lb to 400 lb per caster, in zinc plated steel, stainless steel, and rust-resistant plastic bodies. It is the general purpose line for day-to-day cart, rack, and equipment service. The series also includes our Precision Raceway casters, which use a precision bearing raceway in the swivel to cut rolling effort and noise.
