McMaster 6384K77 Steel Ball Bearing, Sealed, Trade No. 3028 2RS, for 5 8" Shaft Diameter, 1300 lb 3NLW5 Winch SRL Weight Capacity 400 Winch SRL Weight Capacity 400 lb Base Mount Style Freestanding Includes Winch Yes Includes SRL Yes Confined Space Item Tripod System Entry Orientation Vertical Winch Weight Capacity 400 lb Brand and Series MSA Safety Workman Workers per System 1 Includes Winch SRL Bracket Yes Tin Plated Copper 005" Seal Material Buna N Shaft Mount Type Press Fit Lubricant Grease System of Measurement Inch Country of Origin United States DFARS Compliance Specialty Metals COTS Exempt ECCN 1C999 REACH Compliance Not Compliant RoHS Compliance RoHS 3 (2015 863 EU) Compliant Schedule B Number 8482 these bearings retain the most heat since air can't flow through