BALL ASSEMBLIES: 1″ dia. steel ball x 1-13/16″ overall housing diameter. Mounting bolt is 1/4″-20.
BALL CAPACITY: 50 lbs. per ball with max. unit load not to exceed the capacity of 4 balls (200#).
FRAMES: 3-1/2″ x 1-1/2″ x 10 ga. steel with balls in set high position (1/4″ above side frames) only.
FRAME CAPACITY: 1300 lbs. maximum distributed live load per 10′ section with supports at 10′ centers; 3200 lbs. at 5′ centers.
PLATES: Balls are attached in square pattern to 10 ga. formed plates up to 39″ BF. Above 39″, plates are 7 ga.
COUPLINGS: Butt type.