Bosch Siemens Washing Machine Spider Shaft No longer Availableplease check measurement below and compare it wit your current Spider Shaft length: 119 mm. Diameter of the bore for the tub: 28 mm Diameter for internal bearings: 25 mm (internal bearings 6305 are installed in the machine). Outer bearing diameter: 20 mm (the machine is equipped with an outer bearing 6204). Height of the bore from the bathtub: 18 mm. Height from bushing to external bearing: 69 mm. External bearing height: 13 mm. Seat height: 16 mm.