“To minimize drag on drive motors, the cradles can be ordered with center rollers instead of center impact bars,” explained Martin Engineering Global Product Manager Chris Schmelzer. “In either style, eccentrics built into the supports also deliver 5° of wear adjustment, so the alignment between wings and idlers can be optimized for effective transfer point sealing.”
Combination cradles are typically installed so the bars or rollers in the center are slightly below the unloaded belt’s line of travel. This helps the belt absorb impact, but avoids continuous drag and unnecessary wear if the conveyor is running empty.
Constructed on a base of heavy formed channels to deliver long service life even under severe operating conditions, impact bars are secured with two bolts each, facilitating easy service and replacement.