4k/4r-High Performance Maintenance Free Extended Swivel Lead Series-2,500lb
- Swivel device is a combination of Ball Thrust Ball Bearings and Taper Roller Bearings for its maximum performance
- Taper Roller Bearings in upper raceway to handle axial loads while operating at high speeds
- Ball Thrust Ball Bearings as lower raceway to handle combined heavy radial and thrust loads
- Extended swivel radius reduces the effort to start and swivel by half the force
- 3/8" thick top plate with legs formed from 5/16" steel
- Designed for Ultimate solution of traditional casters with kingpin being loosened from lateral force
- Yellow zinc plated to distinguish its superiority