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Hitachi excavator EX600 4398514 0788801 swing motor for excavator repair

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Hitachi Excavator EX600 4398514 0788801 Swing Motor for Excavator Repair

Original OEM swing motor for Hitachi EX600 excavators, designed for reliable performance in demanding construction environments.

Product Specifications

Model	EX600
Part Number	4398514 0788801
Brand	belparts
Place of Origin	Other Country
Condition	Original & OEM
Warranty	12 months
MOQ	1 pcs
Production Capacity	1000pcs /Month
Standard or Nonstandard	Standard
Payment Term	L/C, T/T, Tradeassurance
Delivery Time	3-5 days (depend on order)
Means of Transport	By Sea, Air or DHL/EMS
Guarantee	We will check and send detailed pictures to buyers for confirmation

List of Spare Parts

#	Part No	Part Name	Qty.
	4398514	MOTOR; OIL	1
010	0788801	. PISTON ASS'Y	9
010A		.. PISTON	1
010B		.. SHOE	1
020	0788802	. CASING ASS'Y	1
020A		.. CASING	1
020B		.. PIN; SPRING	2
051	4451628	. VALVE; RELIEF	2
051A	A811030	.. O-RING	2
080	0788803	. PLUNGER	1
101	0788804	. SHAFT	1
111	0788805	. CYLINDER	1
114	0788806	. SPRING; PLATE	1
123	0788807	. RETAINER	1
124	0788808	. PLATE	1
131	0788809	. PLATE; VALVE	1
301	0788810	. CASING	1
351	0409215	. PLUNGER	2
355	0409216	. SPRING	2
390		. NAME-PLATE	1
391	0625509	. PIN	2
401	0365318	. BOLT; SOCKET	4
443	0788811	. BRG.; ROL.	1
444	0788812	. BRG.; ROL.	1
467	0629404	. PLUG	2
469	0692708	. PLUG	2
472	0425115	. O-RING	1
487	957366	. O-RING	2
488	4506428	. O-RING	2
491	0788813	. SEAL; OIL	1
702	0788814	. PISTON	1
706	0353321	. O-RING	1
707	0425117	. O-RING	1

Technical Features

Functional Description
The swing motor is the core hydraulic actuator enabling 360° rotation of the excavator's upper structure (cab + boom). Driven by hydraulic oil, its internal gears or pistons generate high torque to rotate the slewing ring smoothly, ensuring precise positioning and efficient operation.
Working Principle
High-pressure oil from the hydraulic pump enters the motor, rotating the rotor (e.g., axial piston or gerotor assembly). A planetary gear reducer then converts high-speed/low-torque output into low-speed/high-torque force, driving the slewing ring's gear teeth. Cushion valves absorb shock during start/stop, ensuring motion stability.
Key Roles
- Precision Control: Responds to joystick input for stepless speed adjustment and accurate positioning.
- Power Conversion: Transforms hydraulic energy into mechanical torque to overcome inertia (up to tens of tons).
- Safety Assurance: Integrated brakes and relief valves prevent sliding on slopes or overload damage.

Product Images

Product Tags:

Hitachi EX600 excavator swing motor

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