Doosan DH300-7 JMF195 Swing Motor Parts Replacement

Doosan DH300-7 Swing Motor and JMF195 Hydraulic Components Enhance your heavy equipment’s structural rotation and operational efficiency with premium-grade hydraulic swing motors designed specifically for the Doosan DH300-7 series. Engineered to withstand continuous high-torque demands in severe mining, demolition, and bulk earthmoving environments, these JMF195 rotary assemblies deliver precision positioning and optimal cycle speeds. Applicable Excavator Models and Specifications Compatible Excavators: Doosan DH300-7, DX300, DX300LC, DX300LCA, Solar 300LC-V, Solar 300LC-7A Associated Engine Models: Doosan DE08TIS, DL08 Tier 3 Engines JMF195 Hydraulic Swing Motor Assembly The JMF195 axial piston motor forms the core of the upper structure’s sleek rotation capabilities. Featuring heavy-duty wear plates and robust multi-friction discs, this mechanism prevents pressure leakage and guarantees reliable holding brake operation under heavy load variations. Part Numbers & Interchangeable Codes Primary Motor Part Number: JMF195 Complete Assembly Part Number: 401-00457B Interchangeable Codes: 401-00457, 401-00230, 40100457B Swing Reduction Gearbox Parts To convert the high-speed rotation of the JMF195 motor into high-output swing torque, the planetary reduction gear system is built with induction-hardened components that match standard industrial setups seamlessly. Related Maintenance Parts Swing Motor Repair Kit: Cylinder block, valve plate, piston shoes, retainers, and thrust plates Sealing Component: Heavy-duty dynamic oil seals and high-temperature O-ring sets Key Technical Advantages Optimized Hydrostatic Braking: Advanced relief valve integration mitigates hydraulic shocks during sudden swing stops, protecting the main boom frame. Extended Service Durability: Premium carbon-steel housing guards inner rotary groups against micro-abrasions and fluid thermal breakdown. Direct Mount Interchangeability: Dimensions align directly with original equipment specifications, supporting seamless field installations with zero modification required. Related Part Numbers NO P.N. NAME 1 708-1L-00800 Komatsu PC1250-8 Fan Pump 708-1L-00800 2 708-2H-00450 708-2H-00450 HPV165 Main Hydraulic Pump for Komatsu PC400-7 PC400-8 PC... 3 561-20-72003 Drive Shaft Assembly 561-20-72003 for Komatsu WA470-3 HD605-7 4 561-22-72891 Komatsu Final Drive Cover 561-22-72891 for HD785-7 Mining Truck 5 21N-68-32680 Komatsu PC1250-7 Solenoid Valve 21N-68-32680 6 374-2640 Caterpillar C7.1 Engine ECM Controller 374-2640 for 320D2 323D2 329D2 ... 7 708-1W-00771 708-1W-00771 Main Hydraulic Pump for Komatsu WA470-6 WA480-6 Wheel Loa... 8 705-51-30820 705-51-30820 Hydraulic Gear Pump for Komatsu WA470 WA480 Series Wheel ... 9 708-1S-00970 708-1S-00970 708-1S-00940 Hydraulic Fan Pump for Komatsu WA470-6 Wheel... 10 21N-27-00190 Komatsu PC1250 Final Drive Assembly 21N-27-00190 21N-27-00191 11 130-6381 130-6381 Ripper Tilt Hydraulic Cylinder LH for Caterpillar D11T D11R 12 600-051-2180 Komatsu Clip 600-051-2180 for D65 WA470-6 GD675 13 20Y-62-32100 Komatsu PC1250-7/ PC1250-8 Center Swivel Joint 20Y-62-32100 14 723-64-22600 723-64-22600 Main Control Valve Assembly for Komatsu D85-15 Crawler Do... 15 720-2M-00071 720-2M-00071 Main Hydraulic Pump for Komatsu D39-22 Bulldozer 16 561-35-61601 Komatsu 561-35-61601 Relay Valve Assembly HD785-5 HD785-7 17 708-1T-00620 708-1T-00620 Hydraulic Fan Pump for Komatsu HM400-3 HM400-5 Articulate... 18 4668268 Hitachi Main Control Valve Assembly 4668268 for EX1200-6 Mining Excava... 19 14X-15-22710 14X-15-22710 Komatsu friction pad. Compatible with models D65 and D85. 20 561-15-74030 Komatsu HD785-7 Selector Valve 561-15-74030 hydraulic control valve as... 21 708-1S-00240 708-1S-00240 Hydraulic Pump Assembly for Komatsu D65-12 D65-15 D275-5D... 22 561-30-81101 Wheel Rim Assembly 561-30-81101 for Komatsu Heavy-Duty Machinery 23 6212-11-4410 566-02-6E141 6212-11-4410 6212-11-4420 Silicone Hose for Komatsu HD465... 24 705-22-28310 705-22-28310 Hydraulic Pump Assembly for Komatsu HD465 HD785 25 21T-38-00160 21T-38-00160 PTO Assembly for Komatsu PC2000-8 PC2000-8R 26 9270013 Hitachi Complete Travel Final Drive Assembly 9270013 YA60001978 for EX... 27 708-7W-00350 Komatsu PC1250 PC2000 Series Fan Motor (708-7W-00350 / 708-7S-00820 / ... 28 6240-21-8100 Komatsu PC1250SP-8R Bearing 6240-21-8100