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Product Info - Item 66178

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Caster; Swivel; 6" x 1-1/4"; Flat Free (Grey); Hollow Kingpin (1/2" bolt hole); Zinc; Ball Brng; 150# (66178)

$25.26  $23.28
Save: 8% off

Quantity Discounts
1-8
$23.28
9-15
$23.49
16-31
$22.99
32+
$21.98
Call with higher quantities.
Caster; Swivel; 6" x 1-1/4"; Flat Free (Grey); Hollow Kingpin (1/2" bolt hole); Zinc; Ball Brng; 150# (Shepherd PGS60400ZN-NOM21(GG))

  • Wheel Diameter: 6"
  • Tread Width: 1-1/4"
  • Material: Foam-Filled Flat Free Tire (Gray)
  • Load Rating (Per Item): 150 pounds
  • Finish: Zinc
  • Connector Details: Hollow Kingpin (1/2" bolt hole)
  • Bearing: Ball Brng
  • Load Height: 7-1/8"
  • Swivel Radius: 4-1/2"
  • Usually Ships in: 24 hours (depending on quantity ordered)


  • Hollow Kingpin casters are often shipped unassembled to allow the customer to insert their connecting bolt before the wheel is installed and in the way.

    Flat Free (also known as semi-pneumatic) are extremely popular wheels. Made to perform like a pneumatic tire, they are filled with a lightweight, microcellular polyurethane foam. They retain the lightweight, bounce and cushion like a pneumatic tire, without the nuisance of air leaks.

    Flat free wheels will typically experience flat-spotting even when loaded within the acceptable weight limits. They tend to flat spot immediately, a little more after a few hours, a little more at 24 hours, and not much more after that regardless of time. 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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