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Product Info - Item 66578

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4" x 7/8" Swivel Caster with a Thermoplastized Rubber (Gray) wheel, Grip Ring connector, and Ball Brng (#66578)


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Caster; Swivel; 4" x 7/8"; Thermoplastized Rubber (Gray); Grip Ring (7/16"x7/8"); Chrome; Ball Brng; 160#; Total Lock (MedCaster RZ-04TPP-090-TL-GR01 / 902014)

  • Wheel Diameter: 4"
  • Tread Width: 7/8"
  • Material: Thermoplastized Rubber (Gray)
  • Load Rating (Per Item): 160 pounds
  • Finish: Chrome
  • Connector Details: Grip Ring (7/16" x 7/8") (MOST COMMON)
  • Bearing: Ball Brng
  • Total Lock (Trailing)
  • Misc Options: Thread guards
  • Swivel Locks: Total Lock (Trailing)
  • Load Height: 4-7/8"
  • Swivel Radius: 4-3/16"
  • Usually Ships in: 24 hours (depending on 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.


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