Modern excavators predominantly use swashplate-type axial piston pumps. By electronically adjusting the swashplate angle via proportional valves, the piston stroke and pump displacement are precisely controlled. This enables instant response to operator commands: reducing flow for energy savings under light loads, while boosting pressure for heavy digging. Crucially, it balances power and efficiency, minimizing heat generation and extending equipment lifespan.

Komatsu, Hitachi, Rexroth, KAWASAK,
Volvo, KYB
KOMATSU
HPV35 (PC200-3/5, PC120-3/5)
HPV55 (PC100-3/5, PC120-3/5)
HPV90 (PC200-3/5, PC220-3/5)
HPV95 (PC200-6/7, PC220-6/7)
HPV160 (PC300-3/5, PC400-3/5)
HPV375 (PC800, PC2000)
KPV90(PC200-1/2)
KPV100 (PC300-1/2, PC400-1/2)
KMF90 (PC200-3/5, PC220-3/5)
KMF160 (PC300-3/5, PC400-3/5)
LPD25-PI(PC35MR-2) PC50 PC56-7 PC40MR-2 PC40MR-1 PC45MRX-1 PC35MR-3 PC55/56
LPV30-CR PC30-8(10001) PC35R-8(#35001) (PC40-8)
HPV25 PC40R-8
LPD25-CR(PC45) PC35MRX-1(#1001) PC45MRX-1
HPV35 PC60-3/5/6
HPV63+63 D34/D37/D39
HPV75 PC60-7
LPD45 PC60-8 PC70-8UU PC78US-6
HPV55 PC100-3/5 PC120-3/5
HPV95 PC100-6 PC128US /PC120-6/PC130-7/PC138
HPV90 PC200-3/5 PC220-3/5
HPV95 PC200/220-6/7/8 HPV105(PC200-7) PC200-6 PC200-6(102)
HPV95 pc1250-7/1250-8
HPV160 PC300/400-3/5
HPV132 PC300/350-6/400-6/450
HPV132 pc1250-7/1250-8
HPV140(HPV125K) PC300-7/8 PC360-7/8 PC350-7
HPV165 PC400-7 PC450-7 PC400-8
HPV375 PC850-8/2000-8/3000-6/4000-6
KMF31 PC40HM PC45R-8 ER569 PC55HM PC45-8HM
KMF40 PC60-3/5/6HM PC120-3/5/6HMSmall nose
KMF41 PC60-7/75/45-7HM PC40-7HM
KMF230 PC300-7/350-8 450-7/-8
HMV110 LMF45,PC200/7/8220/6XM
HITACHI SERIET
HPV125B UH07/083
HPV050 EX100/120-5/135
HPK055A ZAX110/120-5/130 EX120-6