The shaft spider assembly with part number 421-20-33621 (alternatively 4212033621) serves within the shaft structure to balance torque transmission on the drivetrain of specified Komatsu machinery models.
Part Matching in Compatible Machines
Used in drivetrain overhauls for the D65EX-15, WA70-5, WA480-6, WA470-6, D65EX-16, and D85EX-18 series, this component ensures mechanical loads in the power transmission line are transferred at correct angles.
During drivetrain repairs, when installing the shaft spider, flange surfaces and connection bolts must be tightened in accordance with the specified torque values.
Which model series are you hesitant about regarding the compatibility of your machine's serial number or the removed part with the 421-20-33621 code?
