SOUTH BEND LATHE MODEL 9C ( 1937-1940 ) CHANGE GEARS PART 2

pinshape

Summary This is the second part of a comprehensive set of change gears specifically designed for threading operations on an 8TPI imperial leadscrew lathe, tailored for a South Bend lathe model 9C. The gears feature a critical pressure angle of 14.5 degrees, ensuring precise thread cutting. With a gear ratio of 18 and a module of 1.411, these gears are crafted to deliver optimal performance. True involute form is achieved throughout the design, guaranteeing smooth thread engagement. Key specifications include teeth widths of 3/8" with a center bore of 0.5625", and a key width of 1/8". Each set contains five gears, specifically 36, 40, 44, 46, and 48. If you require additional gear sets or have specific needs, please don't hesitate to inquire. Print Settings Rafts: Not necessary Supports: Not required Resolution: A high-resolution setting of 0.3mm is utilized for precise prints. Infill: A solid infill of 100% ensures maximum strength and durability. Important notes: The center hole may be slightly undersized, requiring careful cleaning to accommodate the shafts. Additionally, some minor cleanup around the teeth will be necessary to ensure a smooth finish.