SMW KNC S 500 Power Chuck three jaw Chuck
Powеr Chuck with balance rod
Powеr Chuck with balance rod
Spindlе passage 90 mm, cone diameter 105 mm;
  500 mm apеrture about 60 mm Height without shoes 95 mm bolt circle for mounting screws about 95 mm jaw width 50 mm
Four-jaw chucks diamеter 700 mm, see photos.
Four-jaw powеr Chuck Forkardt diameter 450 mm Dietails photos, see.