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Your best source for Hercus lathe parts.

HERCUS 9a IMPERIAL to METRIC CONVERSION GEARS--part No.imset


This NEW  gear set enables the turning of metric threads on a Hercus imperial 9a lathe

gearbox model.

set includes:- 60/63 transposing idler gear plus change gears, 24, 27, 30, 33, 36, 42

the attached thread chart shows the threads that can be achieved

this set has a distinct advantages over the bigger 127/100 set in the savings in size, weight  and price.

also suits South Bend 9a and Sheraton 9a lathes  

*******NOTE******

9B and 9C models will require additional gears

45/18 idler, 20, 40, 48, 54, 60, 72, 80  change gears (see the black and white chart shown)

the 30 tooth from the A model set is not required.


  • Brand: AMH
  • Product Code: imset
  • Availability: 9

This NEW  gear set enables the turning of metric threads on a Hercus imperial 9a lathe

gearbox model.

set includes:- 60/63 transposing idler gear plus change gears, 24, 27, 30, 33, 36, 42

the attached thread chart shows the threads that can be achieved

this set has a distinct advantages over the bigger 127/100 set in the savings in size, weight  and price.

also suits South Bend 9a and Sheraton 9a lathes  

*******NOTE******

9B and 9C models will require additional gears

45/18 idler, 20, 40, 48, 54, 60, 72, 80  change gears (see the black and white chart shown)

the 30 tooth from the A model set is not required.


$346.60



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