ROLLERS: 3-1/2" x 9 ga. steel tubing, model 3509S, with straight ends, reamed to provide smooth bearing seats.

ROLLER CAPACITY: 700 lbs. per roller.

AXLES: 11/16" hex shaft, spring loaded.

FRAMES: 4" at 5.4 lbs. structural steel painted channel set high; 5" at 6.7 lbs. structural steel painted channel set low (extra charge for set low).

COUPLINGS: Butt type.

BEARINGS: Removable type, heavy duty ball bearings, zinc plated, grease packed.

FRAME CAPACITY: 3750 lbs. maximum distributed live load per 10' section with supports at 10' centers; 8000 lbs. at 5' centers.