Just Cuz Robotics Dartbox Replacement Shafts Shafts are the most easily damaged part of most gearmotors. Stock up on spares for cheap! These replacement shafts come already pressed into a carrier plate with pins installed for planetary gears. They are identical to the 4mm shafts originally shipped inside the gearboxes. Gears and circlip are not included, you will need to make sure not to lose any parts when disassembling your gearbox to replace the shaft! You may need circlip pliers (or normal needle nose and a lot of care) and a 1.5mm hex wrench. The HR 135:1 and Drive gearboxes use different final gear stages so the shafts cannot be interchanged between them, unfortunately. The 107:1 however has the same shaft as the Drive gearbox. Sold as 1 shaft each. Motor not included!
