Hitachi ZX60 and ZX60-5A Swing Motor Slewing Assembly Optimize the superstructure rotational performance, torque efficiency, and precise braking control of your compact crawler equipment with premium-grade replacement swing motor assemblies engineered specifically for Hitachi ZX60 series 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 drift. Applicable Excavator Models and Specifications Compatible Excavators: Hitachi Zaxis ZX60, ZX60-3, ZX60-5A, ZX60-5G, ZX60-7, ZX60-HCMC Compact Excavators Associated Engine Models: Isuzu 4JG1, Yanmar 4TNV94L-PHY, Yanmar 4TNV98 Diesel Engines Hitachi ZX60 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 drop 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 14X-12-11100 Komatsu Damper Disc Assembly 14X-12-11100 for D65 D85 Series Bulldozer 2 6245-51-9100 Komatsu Oil Pump 6245-51-9100 - SAA6D170E-5C/5A-01/5-B EGR Valve Lubri... 3 702-16-01682 Komatsu Pre-valve 702-16-01682 for PC1250-7 PC750-7 4 207-60-71182 207-60-71182 Filter Element for Komatsu PC600 WA470 5 6240-81-5215 Komatsu PC1250-8 Wiring Harness Assembly 6240-81-5215 6240-81-5932 6 0-24000-0228 Kobelco SK130-8 D04FR Starter Motor 32G6610101 0-24000-0228 24V 10T 7 6240-61-4701 Komatsu PC1250-7 Fan Belt Tensioner 6240-61-4701 8 569-32-79110 Komatsu Brake Assembly 569-32-79110 for HD465 HD785 Mining Trucks 9 SAA12V140E-3 Komatsu SAA12V140E-3 Engine Assembly for HD785-7 10 561-30-81111 Heavy-Duty OTR Rims 561-30-81111 569-30-73502 Wheel Rim for Komatsu HD... 11 6245-11-5500 6245-11-5500 muffler for SAA6D170E-5CR-W engine for Komatsu PC1250SP-8... 12 377-4950 377-4950 Main Hydraulic Pump for Caterpillar E336E 336F 13 227-0830 227-0830 Main Hydraulic Pump for Caterpillar D6R Bulldozer 14 561-30-91104 Komatsu 561-30-91104 561-30-81101 Rim Assembly for HD465 HD785 15 708-1U-00151 708-1U-00151 Steering Fan Hydraulic Pump for Komatsu WA380-6 Wheel Loa... 16 705-21-26180 hydraulic pump Komatsu 705-21-26180 PC1100 PC1100SP PC1250 PC1250SP WA... 17 09284-00045 Komatsu Extended Assembly 09284-00045 for HD785 Mining Truck 18 708-1T-00471 708-1T-00471 Hydraulic Fan Pump Assembly for Komatsu D155 19 YB60000550 Hitachi HPV118JW026C Hydraulic Pump YB60000550 20 708-2L-00681 Komatsu PC1250/PC1250-8 Hydraulic Components Fan/Travel/Swing Motors &... 21 219-2622 Caterpillar D6R Transmission Assembly 219-2622 315-9959 180-3431 for D... 22 4436203 Hitachi EX2500/3600/8000 Hydraulic Pump 4436203 23 566-35-44110 Komatsu Control Device 566-35-44110 for HD405-6 HD255-5 24 9211624 Hitachi EX2500 Swing Reducer Gear Housing 9211624
