• 3081023 Hydraulic Pump Center Shaft HITACHI Excavator Spare Parts Fit For EX300-5 EX350H-5

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• Specifiion

• Key functions 

1.Power Transmission: Serves as the critical link between the engine and hydraulic pump, converting engine mechanical energy into rotational motion for the pump’s internal components. Without it, the pump cannot generate hydraulic pressure.

2.Component Alignment: Maintains precise centering of the cylinder block and pistons, ensuring smooth piston movement and consistent oil compression. Poor alignment (from a bent or worn shaft) leads to reduced pump efficiency and premature failure.

3.Seal Protection: The shaft’s smooth surface and proper diameter tolerance ensure a tight seal with the pump’s oil seals, preventing hydraulic oil leakage (a major cause of reduced system pressure and increased maintenance costs).

4.Torque Resistance: Handles peak torque loads during heavy operations (e.g., excavator boom lifting under maximum load), resisting bending or torsional deformation that would disrupt pump function.

• Compatible models

EX300-5 EX300-5HHE EX300LC-5M EX300LCLL-5 EX300LCLL-5M EX345USR(LC) EX350H-5 EX350H-5HHE EX350K-5 EX370-5M EX370HD-5 EX370LL-5M EX385USR ZX330 ZX330-3 ZX330-3-HCMC ZX330-3G ZX330-5G ZX330-HHE ZX330LC-5G ZX350-3-AMS ZX350H ZX350H-3 ZX350H-3G ZX350H-5G ZX350K ZX350K-3 ZX350K-3G ZX350K-5G ZX350LC-3-HCME ZX350LC-5B ZX350LC-AMS ZX350LC-HCME ZX350LCH-5G ZX350LCK-5G ZX350LCN-5B ZX360H-3G ZX360LC-HHE ZX370MTH ZX400W-3 ZX500W Hitachi

• More other shaft applied to HITACHI heavey machine

• Directory listing

• We could supply the following spare parts

1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.

2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.

3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.

4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.

5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.

6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.

• Packing and Shipping

Packing Details :

inner packing : plastic film for wrapping

external packing : wooden

Shipping :

within 3 days after received the payment , by air or by express or by sea on the basis of the

quantity and emergency circumstances.

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,

2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.

3. By Sea: Delivery from the Huangpu port .