View the Acme Gridley 1-5/8" RBN-8 illustrated code reference drawing for Group A
This National Acme replacement spindle drive gear part number is for Acme Gridley 1-5/8" RBN-8 multi spindle screw machines starting with serial number AM-40546. Please contact us if your screw machine serial number is prior to this number.
For some Acme Gridley screw machine models, the spindle drive gear is referenced as item number 1-D or 3-DD.
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