Fits 7x (7×10″ 7×12″ 7×14″ 7×16″) Chinese lathes. Sieg brand, and most others. Stock gears are 20-80-80 teeth, mine are 15-80-90 teeth. Slows the feed from 0.0039″ per chuck revolution to 0.0026″ per revolution. They slow the feed rate by 1/3! Makes for a much smoother auto feed cut. You will love the finer finish your projects will have.
Fits under the gear cover with zero modification to anything. Lubricate with white grease…I prefer Lubriplate AERO Lube.
This gear set is 3D Printed with PETG filament, 80% infill. This make for a very durable gear set. Smaller outer diameter washer for the M5 Allen is included. I print these in house, they take seven hours per gear, so sometimes there may be a few days before shipment. No shortcuts, you will love them.
I supply these to LittleMachineShop.com . Their part number is 1137, page 41 in their catalog #33.
15/80 and 90 Teeth
Module 1 Metric Gears
Bore 12mm/90T, 8mm/15-80T
*Shown with no lubricant for clarity, use white grease.