57/58 Heavy Duty Kingpinless Series – Rated up to 7,000 lbs.
• ASTM1045 drop forged swivel head, 5/16” thick, 3” diameter precisely machined and hardened raceway, loaded ½” dia. hardened ball bearings
• Viton® Seal integrated with raceways available
• Legs are double welded 3/8” thick steel
• Grease fitting on raceway and axle
• 3/4” axle bolt/nut
• Zinc plated finish
Semi-Steel Wheels
• Precisely machined Semi-Steel wheels
• Temperature range: -45°F to 600°F
• Tensile strength of 30,000 PSI
• Hardness: Brinell 145


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