Komatsu Galeo PC138US-8 Shop Manual page 227

10 Structure, function and maintenance standard
For breaker
(Machine ready for attachment)
For low pressure
1. Cap
2. Core
3. Guard rubber
4. Ring
5. Lid
6. Bladder
7. Shell
Outline
Connected to the attachment piping. When the
q
breaker operates, the oil pulsation is absorbed
by the pressure of compressed nitrogen gas of
the accumulator, to protect the hydraulic sys-
tem devices and piping.
Specifications
Gas to be used: Nitrogen gas
Gas capacity: 480 cc
Sealed gas pressure: 0.1 MPa {1 kg/cm²} (at 80°C)
Maximum operating pressure: 0.69 MPa {7 kg/cm²}
PC138US, USLC-8
For high pressure
1. Cap
2. Core
3. Locknut
4. Gas port
5. Bladder
6. Shell
Outline
Connected to the attachment piping. When the
q
breaker operates, the oil pulsation is absorbed
by the pressure of compressed nitrogen gas of
the accumulator, to protect the hydraulic sys-
tem devices and piping.
Specifications
Gas to be used: Nitrogen gas
Gas capacity: 500 cc
Sealed gas pressure:
5.88 MPa {60 kg/cm²} (at 80°C)
Maximum operating pressure:
SEN02550-01
20.6 MPa {210 kg/cm²}
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