4" threaded stem swivel polyurethane escalator castor wheels for shopping cart
Housing:
Made of pressed steel, zinc plated
Ball bearing swivel head
Wheel:
Materials: Polyurethane on nylon
Bearing type: Precision ball bearing
Hardness:90±5 Shore A
Temperature range: -20℃～80℃
Feature:
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New imported polyurethane materials.
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Non-marking and quiet. Rolls easily on floor.
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More secure runs on the elevator.
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Escalator caster wheels is widely used at those huge supermarket.
