Polyamide door roller with ball bearing seat

[Specifications]
・Wheel bearing: Bearing seat
・Rim material: Polyamide
・Tread material: Polyamide
・Wheel diameter(mm): 60
・Wheel width(mm): 22.5
・Load capacity dynamic(kg): 40
・Weight(kg): 0.03

these door rollers are made of poylamide, with plain bore and edged groove