For South Bend 11 Metal Lathe

  48 tooth  Nylon gear

Outer diameter 3.125

Center bore 0.625 (5/8") with single 0.175 (3/16") key

gear face width .625 (5/8")

Diametrical Pitch 16

Part number:  48

This gear FDM made out of out of Nylon - tough and flexible plastic

No lubrication required 
Only Nylons should be used for gears where a slippery surface is desired.
  All other materials (PLA, ABC, PET, etc.) will grind creating a plastic dust and eventually fail!
For details, please review all pictures and compare to OEM gear shown

Do not waste money for ABS, PLA plastic gear that may strip or melt

Thank you.