HYDRAULIC POWER PACK
PROPORTIONAL VALVES
HYDRAULIC OIL
HYDRAULIC PUMP
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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. | ||
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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. | ||
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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% | ||
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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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