Single row deep groove ball bearing with rubber seals in contact on both sides, Attribute : Specifications, Inner Diameter (d): 12 mm, Outer Diameter (D): 37 mm, Width (B): 12 mm, Estates: 2RSH (two rubber lip seals), Dynamic load, C: 9.56 kN, Basic static load, C: 4.25 kN, Limit speed: 14,000 rpm