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The hitachi ex60 swing motor in the full hydraulic excavator is the key component of the swing mechanism. It converts the oil pressure provided by the main pump into mechanical energy and inputs it to the reducer. The quality of its working performance will directly affect the rotation speed of the whole machine, and the driving torque, swing parking and parking brake are the keys to determine the productivity of the whole machine. Rotary motors are divided into two categories: low-speed high-torque motors and high-speed rotary motors.
Low-speed and high-torque motors are rarely used in modern excavator slewing mechanisms due to their small size and heavy weight, while high-speed slewing motors are small in size and light in weight, which is convenient for the reasonable layout of the slewing mechanism, and can also meet different slewing speeds and rotations. Moment requirements, it is widely used.
Hitachi Ex60 Swing Motor For Sale
| Name | Best Seller Cheaper Hitachi Ex60 Swing Motor For Sale |
| Product Number | All Part Numbers You Need |
| Condition | Original Brand New |
| MOQ | 1 Piece |
| Payment | T/T, Western Union, Paypal, etc |
| Standard or Nonstandard | Standard |
| Delivery Time | In 3 Days |
| Packing | Wooden Box |
| Warranty | 6 Months |
| Transport | By sea/air/express (DHL/FEDEX/TNT/UPS/EMS/City-line) |
Failure phenomenon and cause analysis of hitachi ex60 swing motor
When the excavator works at a relatively low temperature, the driving force and rotation speed do not decrease significantly. When the oil temperature rises above 60 degrees Celsius, the rotation is weak, the rotation speed is unstable, and the speed fluctuates.
The above faults occur, in addition to the pumps, valves and other components in the system's rotary system, hitachi ex60 swing motor is mainly due to the wear and tear of the internal motion matching parts of the rotary motor, the gap increases, the leakage increases, the return oil cannot be discharged in time, and the high-pressure oil leaks in large quantities. , the pressure in the casing increases, the temperature of the oil increases, and the viscosity decreases.
Detection of hitachi ex60 swing motor
(1) Pressure test Use a blind plate to isolate the oil circuit of the rotary motor from the main oil circuit, and use an oil pressure gauge to test the oil pressure at the oil inlet and outlet of the rotary motor for forward and reverse rotation, that is, to obtain the pressure value of the rotary motor. Then connect the oil circuit to make it in normal working state, drop the excavator bucket and insert it on the ground. When the load of the rotary platform increases, the pressure of the relief valve is tested when the motor is driven, and the fault state can be determined by comparing the two sets of test data.
(2) Flow test Connect the PFM-6 flowmeter to the oil circuit in series, test the inlet and outlet flow and pressure of the rotary motor, and determine whether the output torque and speed of the rotary motor reach its technical performance indicators, and at the same time, it can determine the fault location of the rotary motor. .
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