SOUTH BEND 9/10K LATHE METRIC TRANSPOSING GEAR 3D Printed NEW
One piece design 47/37 transposing gear (change gear). This is a 3D plastic printed gear.
Gear Face Width = .375" (3/8)
Center bore = .625" (5/8)
Teeth = 37 and 47
Center bore is bushed to provide long life wear characteristics.
This combination of sizes (47/37) is commonly used for transposing the speeds on lathes with 8 TPI lead screws for cutting metric sized threads. While not truly perfect, the margin of error is .021% or .0026" per foot.