20X50X12mm Polyurethane Rubber roller wheel Bearing Sealed Miniature - tire Outer Diameter - 22mm each bearing has built-in seals

each bearing has built-in seals to protect the bearing from dust or any possible contamination

Basic Static Load Rating Cor: 67 kN

S6810ZZ Food Grade

Dynamic load rating: 774 N

9 48 1/2-13 100 19 49

20X50X12mm Polyurethane Rubber roller wheel Bearing Sealed Miniature - tire Outer Diameter - 22mm each bearing has built-in sealsPolyurethane Rubber sealed Wheel Ball Bearing with tire 20mm x 50mm x 12mm Polyurethane ( PU) is a new type of polymer composite materials between rubber and plastic, offering higher load bearing capacity compared to plastic, polyurethane offer superior impact resistance, while good mechanical properties. Polyurethane have better abrasion and tear resistance than rubber. PU 20X50X12 Ball Bearing Deep Groove Ball Bearing Material: GCr15 bearing steel