4 Wheel Trolley Assembly Rollers Four Bearing Trolley Assembly for 1-5/8" Wide and All 1-5/8" or Taller Strut Channel 8

Beam Trolleys by SKTREX. Details: Heavy-Duty Build Two Bearing Trolley Assembly Made with Hot-Rolled Carbon Steel of solid steel for impact resistance. Galvanized to ensure rust resistance of wheeled trolleys. Smooth and noiseless during use bearings and pins are firmly welded work stably Resulting In Incredible Strength and Quality! Trolleys Size Steel plate hole diameter-9/16"14mm; thickness-1/4"6mm. For use with 1-5/8" Wide and All 1-5/8" or Taller Strut Channel. Design load 280 lbs at 600 rpm; 380 lbs at 300 rpm; 450 lbs at 100 rpm. Break strength: 3969 lbs.