Bore Diameter (Inner): 1 inch (25.4 mm) Outside Diameter: 52 mm (2.0472 inches) Length Across Bore: 44.399 mm (1.748 inches) Dynamic Load Capacity: 2,430 lbs Static Load Capacity: 1,750 lbs Limiting Speed: 7,000 RPM Sealing Type: Dual contact seals ("2F") with protective zinc-coated steel flingers to shield out grease and lock out dirt.