油圧用語 - Robert Bosch GmbH

1 Axial piston pump hydraulicaccumulator actuator pressure drop pressure surge ( ) ( ) pressure switch pressure control valve pressure loss pressurecompensation pressure pulsation safety valve underlap unloading valve flash point interflow air bleed, system airbleeding aeration erosion override pressure overlap ( )

2 Open circuit all port open all port block displacement (JIS B 9933 ) contamination code orifice cartridge valve direction of rotation counterbalance valve K-17 cut-off 1 variable displacementpump 1 variable displacementmotor water content ( ) connector, hosefitting cylinder cap end,cylinder rear end,cylinder non-rod end cavitation compressionconnector cushioning cushioned cylinder cracking pressure,valve openingpressure ( ) closed circuit gauge pressure pressure-reducingvalve synthetic fluid servo-valve ( )

3 Regenerative circuit subplate sandwich valve ( ) sequence valve restrictor restrictor axial piston pump,bent axis designK-18 shuttle valve axial piston pump, swashplate design antiforminng property silting swivel connector aqueous fluid stick-slip strainer spool spool valve 3 spring center spring return throttle valve JIS B 8392-1 cleanliness level biodegradable fluid mineral oil.

4 Petroleum fluid absolute pressure ( ) separator zero lap intensifier diaphragmaccumlator atomosphericpressure single-acting cylinder ( ) check valve, non-return valve boost pressure chattering K-19 valve center position choke rated pressure rated flow dither 1 fixed displacementpump deceleration valve detent solenoid valve,solenoid controlledvalve kinematic viscosity drift ( ) ( )

5 Drain internal leakage fire-resistanthydrauric fluid viscosity viscosity index normal position flapper and nozzlecontrol back pressure pilot pressure solenoid controlledpilot operateddirectional controlvalve pilot-operated valve pilot valve pilot flow rate delivery hysteresis piston accumlator K-20 ( ) proportional controlvalve feedback filter double-acting cylinder plug bladder accumlator ( )

6 System flushing flange connector bleed-off circuit full cut-off frared connector fluid return, pressurereturn fretting prefill valve 2 flow devider vent directional-controlvalve port poppet valve 2 manifold meter-out control meter-in control ( ) leakage ( ) hydrostatictransmission K-21 hydraulic pump hydraulic motor ( )

7 Power unit, powerpack semi-rotary acutuator radial piston pump lap ( ) hydraulic lock flow force flow control valve ( ) pressurecompensated flowcontrol valve pressure relief valve phosphate ester fluid reseat pressure (JIS B 8356-8 ) filtration rasio cylinder rod end,cylinder head end,cylinder front endACM polyacrylate rubberCR chloroprene rubberEPDM ethylene propylenediene rubberFKM fluorocarbon rubberHNBR hydrogenated NBRNBR nitrile rubberO/W oil-in-water emulsionPA polyamide resinPTFE polytetrafluoroethylene resinU polyurethane rubberVMQ silicone rubberW/O water-in-oil emulsion,invert emulsio K-22