• 4194362 Spring HITACHI Excavator Spare Parts Fit For EX270-5 EX280H-5 EX300 EX310H-3C

• Specifiion

• Key functions 

1.Hydraulic Pressure Regulation: In relief valves, it sets the system’s maximum safe pressure, preventing damage to pumps, hoses, and cylinders from overpressure (a leading cause of hydraulic system failure).

2.Valve Spool Positioning: In main control valves, it provides a "return force" to reset valve spools to their neutral position when the operator releases the control lever. This stops unintended movement of the boom, arm, or bucket.

3.Force Consistency: Its stable spring rate ensures the hydraulic system maintains consistent pressure across different operating conditions (e.g., cold startup vs. high-temperature operation). This prevents "pressure drift" (unexpected changes in pressure) that would cause jerky equipment movements or reduced power.

• Compatible models

CX1100 CX500PD CX550 CX700 CX700 JPN CX900 EX270 EX270-5 EX280H-5 EX300 EX300-2 EX300-3 EX300-3C EX300-5 EX300-5HHE EX300LC-5M EX300LCLL-5 EX300LCLL-5M EX310H-3C EX345USR(LC) EX350H-5 EX350H-5HHE EX350K-5 EX370-5M EX370HD-5 EX370LL-5M EX385USR EX400 KH500-3 KH850-3 MH5510B MX6515B SCX550 SCX700 SCX900 ZX270 ZX270-HHE ZX280LC-AMS ZX280LC-HCME 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 spring 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 .