Tractor PTO Shaft Reduction Gearbox 151 and 201 By admin on April 19, 2025 Ratio between PTO shafts is 15:1 and between PTO input and Hexagon drive is 20:1. 15″ between shaft centres and 25″ overall length. Posted on: April 19, 2025Categories: tractorTags: gearbox reduction shaft tractor