Belt Width: 54 in; CEMA Series: D; Idler Type: Steel Return Training, Positive Arm; Roll Diameter: 6.00 in; Roll Material: Steel; Lubrication Type: Regreaseable; Allowable Bolt Spacing Center to Center on Each Mounting Pad in Belt Travel Direction [min]: ; Product Line: Idlers-Return Training Idlers-Positive Arm Type; Series: Rex Classic Series D; Model = 6 in