J1--axis center gear
Applicable models: S--420i F/W/L/R
Applicable models: S--420i S
Applicable models: S--420i R/120, S--420i F/2.85, S--420i W/2.85
J2/J3 gearbox assembly
Applicable models: S--420i F/W/S/L Compact type
J2/J3 gear A assembly
J2/J3 gear B assembly
J4--axis pinion gear
Applicable models: S--420i F/S/L/R
Applicable models: S--420i W
J4--axis center gear
J5--axis gear 1 assembly
J5--axis gear 2 assembly
J5--axis gear 3 assembly