Quality Control CertificatesISO 9001 Tolerance RatingABEC3 Vibration levelV1 Bearings MaterialChromium Steel HousingCast Iron 100% HT-200 SealsDouble seals ScrewTwo set screw with a grease nipple Temperature Rating-20F to 220F Mounting and QualityNTN Type RPM Limit2000 Load Rating (KN)Dynamic:25.70 Static:15.20