The ultimate in heavy-duty conveying for pallets, skids, or drums - the Model 535 is designed to handle extremely heavy loads. The 3-1/2" diameter X .300 wall (schedule 80 pipe) rollers are rated for 2500 lbs. per roller. The rollers use a heavy-duty industrial, grease sealed, 1-1/16" hex bore bearing. The Model 535 is available with either #60 or #80 roll-to-roll chain drives depending on chain pull required. Standard construction is a 6" at 8.2# structural frame. This unit is available with either a bottom mount or side mount drive. Supports are structural channel (non-adjustable) with foot pads. Roller centers are 6" for #60 chain drive and 6-7/16" for #80 chain drive.