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Brand Name : | Hitachi |
Model Number : | EX120-2 EX120-3 |
Price : | Negotiable |
Payment Terms : | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
Supply Ability : | 500-Sets/month |
Delivery Time : | 3-5 days |
Product Descri
Pos. | Part No | Qty | Parts name | Comments |
4334356 | [1] | MOTOR;OIL | 614700 | |
1 | +++++++ | [1] | HOUSING | |
2 | 4334357 | [1] | ROTARY GROUP | 614800 |
3 | 4286402 | [1] | SHAFT ASSY | 407900 |
4 | 4327557 | [1] | COVER ASSY | 605300 |
5 | 407701 | [1] | RING | |
6 | 407702 | [1] | PISTON | |
7 | 407703 | [2] | PLATE | |
8 | 407704 | [3] | PLATE | |
9 | 407705 | [1] | SEAL;OIL | |
10 | 407706 | [1] | RING;RETAINING | |
13 | A810130 | [1] | O-RING | |
14 | 407707 | [2] | O-RING | |
15 | 407708 | [1] | O-RING | |
16 | 407709 | [1] | BRG. | |
17 | 407710 | [1] | PLATE | |
18 | 254007 | [16] | SPRING | |
19 | 407711 | [1] | CASE | |
20 | 330402 | [1] | O-RING |
Undercarriage spare parts: | Track shoe, Track Link, Bolt, Track roller, Carrier Roller,
Sprocket, Front Idler, Idler Cushion ...... |
Engine spare parts: | Engine assy,Cylinder Head,Cylinder Block,Turbocharger,Piston,
Piston Ring, Metal, Crankshaft, Oil Pump, Fuel injection Pump,Water Pump, Alternator, Starting Motor ...... |
Hydraulic spare parts: | Main Valve, Main Pump, Solenoid Valve, Boom/Arm/Bucket Cylinder,
Final Drive, Travel Motor, Swing Machinery, Swing Motor ...... |
Operator's Cab spare parts: | Cab Assy, Monitor, Controller, Engine Controller, Wiring Harness,
Seat, Air Conditioner, Air Compressor...... |
Cooling parts: | Radiator, heat sink, air conditioner, compressor, after cooler ,
water cooler hydraulic oil cooler ...... |
Other parts: | Service kit, swing circle, engine hood, swivel joint, fuel tank,
filter, boom, arm, bucket |
About Xinfeng Machinery (XF) parts:
Theory
The excavator slewing motor is one of the key components of the excavator slewing system. It is mainly responsible for driving the slewing mechanism of the excavator so that it can rotate in the horizontal direction. The following is the basic principle of the excavator slewing motor:
Hydraulic drive: The excavator slewing motor uses a hydraulic
system to provide power. The hydraulic system consists of a
hydraulic pump, a hydraulic oil tank, a hydraulic pipeline and a
slewing motor. The hydraulic pump extracts and pressurizes the
hydraulic oil from the tank, and transmits the high-pressure
hydraulic oil to the slewing motor through the hydraulic pipeline,
thereby driving the operation of the slewing motor.
Gear transmission: The excavator slewing motor uses gear
transmission to achieve rotation. The slewing motor is usually
composed of multiple gears, including a driving gear and a driven
gear. The driving gear drives the driven gear to rotate through the
high-pressure hydraulic oil provided by the hydraulic system,
thereby realizing the rotation of the slewing motor. The size and
number of teeth of the gear determine the speed and torque output
of the slewing motor.
Hydraulic control: The rotation speed and direction of the
excavator slewing motor can be achieved through hydraulic control.
The hydraulic system is equipped with a flow control valve and a
direction control valve to control the speed and direction of the
slewing motor by adjusting the flow and direction of the hydraulic
oil. The flow control valve is used to adjust the flow of hydraulic
oil to control the speed of the motor; the direction control valve
is used to change the flow direction of hydraulic oil to achieve
forward and reverse rotation of the motor.
Bearing support: The gears and bearings inside the excavator swing
motor are supported and maintained in relative position by the
bearing system. The bearing system can reduce the friction between
the gears and the shaft, and bear the radial and axial loads
generated by the swing motor to ensure the stable operation of the
swing motor.
Through hydraulic drive, gear transmission and hydraulic control,
the excavator swing motor can achieve smooth and controllable swing
motion. The appliion of its principle enables the excavator to
achieve accurate rotation and positioning during work, improving
work efficiency and flexibility.
Advantages
Warehouse Display
Packaging and Delivery
FAQ
1. How to quickly and accurately buy products what lneeded?
A: Provide the original parts number to us to check.
2. How long have you been in the excavator
A: We are engaged in excavator parts since 1998
3. lfI don't know the part number,what shouldI do?
A: Please send us size and pictures of old products.
4. What is the warranty of the products?
A: The warranty is 6/12 Months based on the specific product.
5. How long is your delivery time?
A: The normal delivery time is 3-5 days for stock sproductsafter
getting payment. lf not in stock, we will inform you thetime
requlred.
6. Which shipping term you can supply?
7. What is your MOQ?
A: Small order and sample order are acceptable
8. Do you have any After-Sales service?
A: Yes!Our
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