How much hydraulic pressure does an excavator have?
How much hydraulic pressure does an excavator have?
The hydrostatic drive operates at pressure to 343 bar (4970 psig). The main hydraulic reservoir holds 322 l (41 gal), and the entire hydraulic system requires 322 l (86 gal) of fluid. The hydraulic circuit for main implements also operates at pressure to 343 bar, and is capable of flow to 235 l/min (62.1 gpm).
How much does a 321 CAT excavator weight?
The top piece weighs approximately 2268 kg (5,000 lb), and the bottom weighs 3832 kg (8,450 lb).
Why is water not an optimal hydraulic fluid?
Water meets the low compressibility requirement, but there are many other considerations in the design of a hydraulic system: Boiling point/vapor pressure: If the system warms up during operation, the fluid may boil, which results in high compressibility and thus decreased effectiveness of the hydraulic system.
How do you test a hydraulic excavator pump?
Testing a Variable Displacement Pump
- Check the tank line temperature of the relief valve with a temperature gun or infrared camera.
- Install a flow meter in the case drain line and check the flow rate.
- Check the current on the drive motor.
- Ensure the compensator is 200 psi above the maximum load pressure.
How much does a 312 CAT excavator weight?
33080 lbs
Weights
| Maximum Operating Weight | 33080 lbs (15,005 kg) |
|---|---|
| Minimum Operating Weight | 29770 lbs (13,504 kg) |
| Operating Weight | 33080 lbs (15,005 kg) |
What makes a 321c LCR a good hydraulic excavator?
Engine and Hydraulics The Cat®3066T engine combines with proven hydraulics to give the 321C LCR consistently high power and control in a variety of applications. pg. 5 Compact Radius The 321C LCR features a compact radius, making it ideal for working in urban construction where space is often restricted. pg. 4 ✔New Feature 3
What does the main relief valve on a hydraulic pump do?
The MRV — main relief valve controllers the hydraulic pressure. The main relief valve is set to protect the hydraulic pump from back pressure. It is set at a particular pressure which the hydraulic pump can hold. If more back pressure comes in, it opens up to release it. So it very critical to set the MRV pressure at the exact recommended level.
How old is Cat Man 320 hydraulic excavator?
Cat man 320 at 12 years you don’t say hr meter reading you pump may bedown om flow what most miss that the modern hydraulic excavator is just a hydraulic power pack if flow’s down cycl times will be slow your Cat dearler should have some one and tooling to carry out hydraulic test to pin point problem’s
Why is my mini excavator hydraulic pump not working?
As a result, we found that the relief valve of the directional valve was working bad because the setting was too low. It was lower than the pumps compensator’s setting. The relief valve setting was supposed to be 4200 psi and the compensator setting 4000 psi. We discover later that this failure was due to a bad o ring. Loading…
Engine and Hydraulics The Cat®3066T engine combines with proven hydraulics to give the 321C LCR consistently high power and control in a variety of applications. pg. 5 Compact Radius The 321C LCR features a compact radius, making it ideal for working in urban construction where space is often restricted. pg. 4 ✔New Feature 3
When does a hydraulic pressure relief valve open?
The load determines the pressure, the hydraulic relief valve only limits the pressure of the hydraulic system, but the pressure relief valve itself cannot generate pressure. 1) When the inlet pressure reaches the pressure presetting point, the pressure relief valve will open and relief the pressure then.
How to avoid high pressure in hydraulic system?
Avoid the high pressure damages to the hydraulic system, components and piping 2. Avoid hydraulic power source such as electric motors, diesel engines, or gasoline engines stops while operation due to heavy loads 3.
How to record hydraulic pressure on an oil rig?
X-Y recorder, or digital oscilloscope, or computer data acquisition record display system. Connect the X-Y recorder with flow qv7 as the X axis, differential pressure P5a-P5b or pressure P5a as the Y axis. Allow the oil temperature to reach the predetermined value. 1. Turn on the hydraulic pressure source 2.
