Caster; Swivel; 4" x 1-1/4"; Thermoplastized Rubber (Gray); Threaded Stem (1/2"-13TPI x 1"); Zinc; Delrin Brng; 280#; Dustcover (Shepherd PGS40741ZN-TPR11(GG))
Wheel Diameter: 4"Tread Width: 1-1/4"Material: Thermoplastized Rubber (Gray)Load Rating (Per Item): 280 poundsFinish: ZincConnector Details: Threaded Stem (1/2"-13TPI x 1")Bearing: Nylon BushingMisc Options: Dust Cover (Mtl)Load Height: 5-1/8"Swivel Radius: 3-3/8"Shipping Weight: 3 lbs.Usually Ships in: 24 hours (may be affected by quantity ordered)
Thermoplastic Rubber (TPR) wheels are precision molded and mechanically locked to a durable polyolefin core to provide an economical wheel for many applications. They provide a smooth, cushioned ride and can overcome small debris and obstacles on the floor. They offer floor protection, are non-marking and non-conductive. These often have various brand names by various manufacturers and can be flat or crowned.
TPR are considered soft wheels which may experience flat-spotting even when loaded within the acceptable weight limits. Flat-spotting is more noticeable in warmer weather. The flat-spotting will roll-out and dissipate after a few minutes of rolling, depending on the size of the standing load and extent of the flat-spotting. This is a normal occurrence of these wheels and is not a product failure. If your application cannot tolerate this temporary condition, another material type may be preferable.