Product Introduction
ATUS A11VLO Series Swashplate Variable Displacement Axial Piston Pump is upgraded version of A11VO, built-in integrated charge pump, designed for open-circuit heavy-duty hydrostatic transmission. It adopts swashplate piston rotary assembly with infinitely adjustable displacement from maximum to zero. Rated pressure up to 350 bar and peak pressure 400 bar, supporting 100% full through-drive for tandem pump combination. Available displacements: 130/145/190/260cc, rich control options, direct interchange replacement for heavy mobile hydraulic systems. The built-in charge pump improves self-priming performance and allows higher working speed compared with A11VO base model.
Technical Specifications:
Size NG: 130 / 145 / 190 / 260
Displacement(cm³): 130 / 145 / 190 / 260
Speed(rpm): 2500 / 2300
Flow (L/min) : 325 / 363 / 483 / 598
N.W.(KG): 72 / 73 / 104 / 138
Rated Pressure: 350 bar
Reak Pressure: 400 bar
Application Field: Used in hydraulic systems of mining machinery, engineering machinery, ships and other equipment
Features
Swashplate axial piston structure for open hydraulic circuit, with integrated built-in charge pump
Stepless variable displacement, output flow adjustable from max to zero
Rated pressure 350 bar, peak pressure 400 bar for continuous heavy load
Multiple control versions: DR pressure control, LR power control, LRD power cut-off, HD hydraulic control, EP electric proportional control
Full 100% through-drive design, convenient to stack auxiliary pumps
Built-in charge pump enhances self-priming ability and high-speed operation stability
Bidirectional rotation optional, SAE standard oil port layout
Reinforced bearing & valve plate assembly for long cyclic service life
Optional swivel angle sensor for electric displacement signal feedback
Strict factory pressure, leakage and efficiency testing before delivery
Advantages
Built-in charge pump solves poor suction issue under high speed or low oil level
High power density, compact layout for limited engine compartment space
Adjustable power limiter protects engine against overload
High volumetric & mechanical efficiency, reduces fuel consumption and heat generation
Standard SAE mounting interface for fast drop-in replacement
Excellent contamination resistance, adapts to dusty construction & mining sites
Modular control configuration to match different control logics
Larger displacement specifications for high-flow heavy-duty main hydraulic systems
Wear-resistant internal friction pairs, extended service cycle
Stable stock of common sizes, competitive lead time for bulk orders
Mounting Method
Standard SAE flange mounting; shaft options include straight key shaft and spline shaft.
Rear through-drive interface supports tandem pump assembly.
Horizontal and vertical installation are both acceptable, suction and pressure ports can be rotated to match pipeline layout.
Application Range
Concrete pump truck main pump, rotary drilling rig, large excavator, mining machinery, mobile crane, asphalt paver, marine deck machinery and other heavy mobile hydraulic equipment requiring high self-priming performance.
Notes & Service
Please confirm displacement, control type, shaft form, rotation direction and seal material before ordering.
ATUS A11VLO series piston pumps support modular assembly and field maintenance.
We provide professional technical support and reliable after-sales service.
FAQ
Q1: How to verify more realistically that ATUS is a factory?
A1: 1)Welcome to visite ATUS workshop by online video Live.
2)Field visite to ATUS manufacturing workshop
Q2: What is the MOQ ?
A2: MOQ 1 PCS
Q3: Can I mark my own brand on the pump?
A3: Sure. Full order Can mark your brand and code
Q4: How long is your delivery time ?
A4: 1).ATUS warehouse stock 2-3 days. No stock 7-15 days
2).ATUS custom production 7-10 days.
3).Mass production: determined according to the quantity
Q5: What payment method is accepted ?
A5: TT,LC,Western union,Trade assurance,VISA
Q6: How to Place your order ?
A6: 1).Tell us Model number ,quantity and other special requirements.
2).Proforma Invoice will be made and send for your approval.
3).Productions will be arranged upon receipt of your approval and payment or deposit.
4).Goods will be delivered as stated on the proforma invoice.
Q7: What kind of inspection you can provide ?
A7: 1).ISO9000 quality system certification.
2).ATUS is tested from material procurement to finished product by different departments such as QA, QC, and sales representatives to ensure that all pumps are in perfect condition prior to shipment. We also accept inspection by a third party you specify.
