HYDRAULIC INFO (HYDRAULISCHE INFO)

HYDRAULIC POWER PACK
PROPORTIONAL VALVES
HYDRAULIC OIL
HYDRAULIC PUMP


HYDRAULIC POWER PACK

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Q : What is the best hydraulic tank capacity if my main pump flow is 100 LPM?
A : Hydraulic tank oil capacity must be at least 3 times of pump flow rate (or cylinder vol/time) which ever bigger. Because of info only on pump flow rate is given, the best tank oil capacity must be at least 300 LITRES OR BIGGER.
 

PROPORTIONAL VALVES

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Q : My hydraulic system using mineral base hydraulic oil VG46 and using proportional directional valve with maximum operating pressure of 100 BARS. What is the hydraulic oil cleanliness require?
A : ISO4406(1999) CODE 17/15/12 or batter. To achieved use 3 microns filter at least one unit with 200 beta ratio fiberglass materials.
 

HYDRAULIC OIL

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Q : What is best viscosity gred for mineral base oil which use in Malaysia construction site?
A : For Malaysia and hydraulic machine operating at site, use ISO VG68.
 
Q : What is the maximum water contain for mineral base hydraulic oil?
A : 100PPM OR 0.01%
 

HYDRAULIC PUMP

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Q : Do we need to service the hydraulic piston pump during hydraulic power unit servicing?
A : YES. Hydraulic piston pump highly recommend be service at least once a year. All internal damage or wear-off part, seals and bearings must be change during this pump service.
 
Q : We are using Bosch Rexroth piston pump model A10VSO28DR/31R-PPA12NOO. The pump DR setting is 200 Bars, what is the best setting for the safety relief valve?
A : The safety relief valve must set 20 Bars higher that pump DR setting. 200 Bar + 20 Bars = 220 BARS.
 
Q : Our hydraulic pump size is 20 cubic centimeter/revolusion. What is this pump flow if this pump drive by 1500 RPM electrical motor?
A : 20(CCM/REV.) X 1500 (RPM) / 1000 = 30 LPM
 

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