Hitachi ZX60-2 and ZX60-3 Swing Motor Slewing Assembly Optimize the superstructure rotational speed, torque capacity, and precise braking control of your compact crawler equipment with premium-grade replacement swing motor assemblies engineered specifically for Hitachi ZX60 mini excavators. Built to handle repetitive 360-degree slewing cycles during urban utility construction, foundation trenching, and light bulk excavation, these integrated hydrostatic drives ensure seamless mechanical power delivery and minimal upper frame drift. Applicable Excavator Models and Specifications Compatible Excavators: Hitachi Zaxis ZX60, ZX60-2, ZX60-3, ZX60-5A, ZX60-7, ZX60-HCMC Compact Excavators Associated Engine Models: Yanmar 4TNV94L, Yanmar 4TNV98, Isuzu 4JG1 Diesel Engines Hitachi ZX60 Series Hydraulic Swing Motor & Gearbox Group The system combines a high-efficiency axial piston hydraulic motor with a compact multi-stage planetary reduction gearbox under a heavy-cast casing. This matching structural configuration safeguards vital internal rotating components against sudden system cavitation and dynamic volumetric oil drops during aggressive operational directional changes. Part Numbers & Interchangeable Assembly Codes Primary Motor & Reducer Part Number: 9286324 Interchangeable Production Codes: 4679499, 9287538, 9286324M, 4679499R Internal Motor Configuration Code: MSG-27P-18E, MSF-27P Series Reference Planetary Reduction Gearbox & Internal Maintenance Spares To facilitate rapid workshop rebuilds and minimize field machine down periods during planned preventative service, a complete line of high-tolerance internal components is supported. Related Service and Repair Elements Rotary Motor Group Parts: Cylinder blocks, valve plates, piston shoe sets, retainers, and thrust plates Slewing Reduction Gears: Output drive pinion shafts, central sun gears, and multi-stage planetary carrier blocks Dynamic Sealing Systems: High-pressure shaft oil seals, durable casing roller bearings, and full ZX60 swing motor seal repair kits Key Technical Advantages Integrated Shock Relief Control: Built-in dynamic cushion and crossover relief valves dampen intense hydraulic pressure spikes during immediate stopping actions, shielding the primary slewing ring teeth from stress fractures. Induction-Hardened Metallurgy: Critical planetary gear profiles and internal sliding friction parts undergo specialized thermal treatment to resist surface micro-pitting caused by fluid-born contaminants. Direct Drop-In Field Fitting: Machined precisely to match standard factory bolt-hole configurations and output spline structures, enabling a seamless installation process without retrofitting or modifications. Related Part Numbers NO P.N. NAME 1 595-9502 595-9502 Caterpillar 395GC Swing Motor & Drive Parts Heavy Excavat... 2 4892731 Caterpillar C7 Crankshaft 4892731 for 324D 326DL 325D 329D 3 706-77-01320 706-77-01320 Swing Motor for Komatsu PC1250-7 Ultra-Large Mining Excav... 4 6215-31-1101 Crankshaft 6215-31-1101 6219-31-1100 for Komatsu HD785 PC2000-8 5 95930840 Komatsu PC3000 PC4000 Swing Motor 95930840 Assembly 6 SAA6D170E-5 Komatsu PC1250-8 Engine Assembly SAA6D170E-5 7 10R-0529 Cat 10R-0529 Swing Pump for Caterpillar 5110B Excavator 8 4439384 Hitachi EX1900/2500/2600/3600/5500 Swing Motor 4439384 4439491 9 4477283 Hitachi Pilot Gear Pump 4477283 4723333 4482892 for EX1200-6 Excavator 10 56B-54-14351 Komatsu Regulator 56B-54-14351 for HD465 HD785 Mining Trucks 11 VOE14636561 Swing Motor VOE14636561 Slewing Assembly fro Volvo EC80 12 723-40-50301 723-40-50301 723-47-17103 Main Control Valve for Komatsu PC300-6 PC400... 13 6560-71-1100 Cummins QSK23 Fuel Pump 4307242 & Komatsu 6D170 Fuel Pump 6560-71-... 14 21T-70-33131 Komatsu Connecting Rod Shim 21T-70-33131 21N-70-33221 for PC1250 PC200... 15 EM8838 Rear Suspension Cylinder EM8838 for Komatsu 830E Series Mining Trucks 16 2708317 Starter & Alternator 2708317 2980532 for Scania DC13 Heavy Truck E... 17 708-1S-00240 708-1S-00240 Fan Pump Hydraulic Fan Pump for Komatsu D65-12 Crawler Do... 18 198-27-45540 Komatsu Cover 198-27-45540 - D475A-3/5/5A/5E0 Final Drive L.H. 19 723-62-11102 Komatsu 723-62-11102 Main Control Valve Assembly for D65E-12 D85E-12 C... 20 705-95-05140 Komatsu Hydraulic Pump 705-95-05140 for HD605 21 102-0783 102-0783 Hydraulic Main Pump for Caterpillar E307 307.5 22 487-6207 487-6207 Main Hydraulic Pump for Caterpillar 301.7CR 302.7CR Mini Exca... 23 9211624 Hitachi EX2500 Swing Reducer Gear Housing 9211624 24 705-21-26180 hydraulic pump Komatsu 705-21-26180 PC1100 PC1100SP PC1250 PC1250SP WA... 25 702-16-01531 Komatsu Pilot Valve 702-16-01531 for D375A bulldozers 26 56D-43-37101 Komatsu Valve Assembly 56D-43-37101 for HM300-5 27 550-4341 Kawasaki K7V180DTP Main Hydraulic Pump | OEM 550-4341 for CAT 336GC /3... 28 6251-71-1121 Komatsu Fuel Injection Pump 6251-71-1121 for SAA6D125E PC400 PC450 WA4...
