Guangdong Sheungchak Hydraulic Technology Co., Ltd. is one of the leading manufacturers and suppliers of a10vo71 in China. With abundant experience, we warmly welcome you to buy high-grade a10vo71 for sale here from our factory. All customized products are with high quality and competitive price. Contact us for quotation.
A10VO71 is an open-circuit variable piston pump. The shaft turns a cylinder block, and the pistons travel against an adjustable swashplate. The pump is still spinning, but its output does not have to stay the same. Change the swashplate angle and the oil delivery changes with it.
Size 71 sits between the smaller 45 frame and the larger 88 or 100 pumps. It gives enough flow for many main working circuits without bringing the size and weight of a larger pump into the machine. Standard Series 31 output is about 156 L/min at 2,200 rpm. There is also a high-speed version. That one reaches roughly 178 L/min at 2,550 rpm. Same displacement, different speed window.
This page is mainly about Series 31. Series 52 and 53 deserve a mention, but they use another size arrangement. Series 52 moves from 60 to 85 cc/rev around this output area. Series 53 has a 72 cc/rev frame. They also use a lower 250/315 bar pressure class. So we do not describe those pumps as "A10VO71 Series 52" or "A10VO71 Series 53." Close flow does not mean the housing, controller or installation points are the same.
Key Features & Benefits
71 cc size
Enough flow for many medium-duty machines without going to a much bigger pump.
Series 31 pressure
280 bar is the normal working level. 350 bar is for peak conditions, not continuous use.
Standard or high-speed
Standard output is about 156 L/min. The high-speed version can reach roughly 178 L/min.
Variable flow
The shaft keeps turning. Flow changes as the swashplate moves and piston stroke changes.
Control options
Pressure control is common, but flow, power and electro-hydraulic versions are also available.
Through drive
Some builds can carry a second pump at the rear.
Port layout
Rear or side ports can be used, depending on the machine and piping space.
Before production
We check the full code first-shaft, rotation, controller, port plate and rear drive.
Size 71 Series 31 comes in standard and high-speed versions, with different control and through-drive combinations.
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Technical Specifications
A10VO71 Series 31 - Main Specification
|
Item |
Standard Version |
High-Speed Version |
|
Model |
A10VO71 |
A10VO71H |
|
Series |
31 |
31 |
|
Pump design |
Variable axial piston, swashplate |
Variable axial piston, swashplate |
|
Hydraulic circuit |
Open circuit |
Open circuit |
|
Displacement |
71 cc/rev |
71 cc/rev |
|
Nominal pressure |
280 bar |
280 bar |
|
Maximum pressure |
350 bar |
350 bar |
|
Speed at maximum displacement |
2,200 rpm |
2,550 rpm |
|
Speed at reduced displacement |
Up to 2,600 rpm |
Up to 2,800 rpm |
|
Theoretical flow at rated speed |
156 L/min |
178 L/min |
|
Theoretical flow at 1,500 rpm |
106.5 L/min |
106.5 L/min |
|
Reference input power at 280 bar |
73 kW |
83 kW |
|
Reference torque at 280 bar |
316 Nm |
316 Nm |
|
Case volume |
1.6 L |
1.6 L |
|
Weight without through drive |
Approx. 35.2 kg |
Approx. 35.2 kg |
|
Weight with through drive |
Approx. 38 kg |
Approx. 38 kg |
These figures are theoretical reference values before volumetric and mechanical losses. The high-speed version is a separate build; a standard pump should not simply be pushed to the higher speed.
Common SAE Port Arrangement
|
Connection |
Common Size / Thread |
|
Pressure port B |
SAE 1 in |
|
Suction port S |
SAE 2 in |
|
Drain ports L / L1 |
7/8-14 UNF-2B |
|
Pilot port X |
7/16-20 UNF-2B |
|
Pressure-port fastening |
3/8-16 UNC-2B |
|
Suction-port fastening |
1/2-13 UNC-2B |
|
Mounting flange |
ISO 3019-1, SAE C style |
|
Shaft options |
1¼ in 14T spline or 1 in 15T spline |
A10VO71 and Nearby Series 52/53 Frames
|
Version |
Displacement |
Pressure Nominal / Max. |
Speed at Full Displacement |
Theoretical Flow |
Approx. Weight |
|
A10VO71 Series 31 |
71 cc/rev |
280 / 350 bar |
2,200 rpm |
156 L/min |
35.2 kg |
|
A10VO71H Series 31 |
71 cc/rev |
280 / 350 bar |
2,550 rpm |
178 L/min |
35.2 kg |
|
Series 52 nearby size 60 |
60 cc/rev |
250 / 315 bar |
2,700 rpm |
162 L/min |
22 kg |
|
Series 53 nearby size 72 |
72 cc/rev |
250 / 315 bar |
2,600 rpm |
187 L/min |
22 kg |
|
Series 52/53 size 85 |
85 cc/rev |
250 / 315 bar |
2,500 rpm |
212 L/min |
36 kg |
Series 52 uses sizes 10, 28, 45, 60 and 85. Series 53 uses 18, 28, 45, 63, 72, 85 and 100. The table is a performance comparison, not an interchangeability guide.
Common Series 31 Controls
|
Control |
What It Handles |
|
DG |
Direct two-position displacement control |
|
DR |
Pump pressure control |
|
DRG |
Remotely piloted pressure control |
|
DFR/DFR1 |
Combined pressure and flow control |
|
DRSC |
Pressure and flow control with another signal-port arrangement |
|
DFLR |
Pressure, flow and power limitation |
|
ED/ER |
Electro-hydraulic pressure adjustment |
Control availability depends on the complete code and port plate. The valve body also changes the finished pump length, so controller photos matter on replacement orders.
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How It Works
1) Piston movement starts with the shaft
Once the shaft turns, the cylinder block follows. The pistons run against the angled swashplate, moving in and out as the block goes around.
2) Oil passes through the pump
Oil enters at S when the piston chamber opens. As rotation continues, the piston moves back and pushes the oil out through B.
At 71 cc/rev and 2,200 rpm, full-stroke flow works out at about 156 L/min before losses.
3) Flow does not stay fixed
The controller changes the swashplate position as the machine demand changes. A smaller angle gives a shorter piston stroke and less oil.
Depending on the pump build, that change may come from pressure, load demand, a power setting or an electrical signal.
Model Range
Main A10VO71 Builds
|
Version |
Main Difference |
Selection Direction |
Suggested Internal Link |
|
A10VO71 Series 31 Standard |
2,200 rpm, 156 L/min |
Regular medium-pressure machine hydraulics |
A10VO71 Series 31 Pump |
|
A10VO71H Series 31 |
2,550 rpm, 178 L/min |
More flow from the same 71 cc frame |
A10VO71 High-Speed Pump |
|
A10VO71 with Through Drive |
Rear pump interface |
Tandem pump or auxiliary supply packages |
A10VO71 Through-Drive Pump |
|
A10VO71 DFR / DFR1 |
Pressure and flow control |
Load-responsive open circuits |
A10VO71 Pressure and Flow Control Pump |
|
A10VO71 DFLR |
Pressure, flow and power control |
Systems with limited engine or motor power |
A10VO71 Power-Controlled Pump |
|
A10VO71 ED / ER |
Electrical pressure command |
Electronically adjusted hydraulic systems |
A10VO71 Electro-Hydraulic Pump |
Series 52 Note
There is no size 71 in Series 52. Around this output level, the usual choices are 60 and 85 cc/rev. Size 60 can make similar flow by running faster; size 85 moves above the A10VO71 output range. Neither is a direct replacement without checking the machine.
Series 53 Note
Series 53 uses a 72 cc/rev frame rather than 71. Its pressure class is 250/315 bar, and its standard output is roughly 187 L/min at 2,600 rpm. That makes it close in displacement, but not the same product.
Applications & Industries
|
Industry |
Equipment Examples |
What the Pump Does |
|
Construction Machinery |
Loaders, graders, drill rigs |
Feeds lift, steering and attachment circuits as demand changes |
|
Agricultural Machinery |
Harvesters, sprayers, utility tractors |
Runs implement functions without holding full flow all day |
|
Material Handling |
Telehandlers, forklifts, mobile handlers |
Shares oil between lifting, steering and working functions |
|
Road Machinery |
Pavers, maintenance units, compact graders |
Changes delivery through the paving, lifting or steering cycle |
|
Forestry Equipment |
Harvesters, forwarders, processing attachments |
Handles uneven work demand in off-highway conditions |
|
Industrial & Special Machines |
Mobile power units, test rigs, custom machines |
Supplies adjustable open-circuit flow from a mid-size pump frame |
Construction Machinery
Agricultural Machinery
Material Handling
Road Machinery
Forestry Equipment
Industrial & Special Machines
About Us
SheungChak is an independent OEM producer of hydraulic piston pumps and motors. The A10VO71 units on this page come from our own manufacturing and supply program.
Replacement work is rarely solved by the front label alone. We check the shaft end, controller, port plate and rear housing. Sometimes the displacement is right but the control is wrong. Sometimes the pump fits the flange but the working ports face the wrong side. Those are the problems we try to catch before assembly.
Factory experience: 20+ years
Main products: Variable piston pumps, fixed piston pumps, hydraulic motors and replacement parts
Main markets: Europe / South America / Middle East / Southeast Asia / Africa
MOQ: 1 PC
Sample supply: 1 PC
Normal production time: 1-2 Days
OEM support: Code checking, drawing review, sample builds and scheduled batch supply
Certifications
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Our Factory & Quipment
cooperative partner
We are looking for a cooperative partner to expand our business.
FAQ Display Content
1) Is A10VO71 a fixed or variable pump?
Variable. The shaft keeps turning while the swashplate changes piston stroke. That lets the pump raise or reduce displacement without stopping the drive.
2) Is A10VO71 available in Series 52 or Series 53?
Not as an exact size. A10VO71 belongs to Series 31. Series 52 uses sizes 60 and 85 around this flow range, while Series 53 uses size 72. Similar displacement does not make them direct replacements.
3) What is the difference between the standard and high-speed A10VO71?
The standard version runs at 2,200 rpm at maximum displacement and produces about 156 L/min theoretical flow. The high-speed build reaches 2,550 rpm and about 178 L/min. Its type code and inlet conditions need to match the higher speed.
4) Does the pump always deliver 156 L/min?
No. That number applies at 71 cc/rev, 2,200 rpm and full displacement. At 1,500 rpm, theoretical output is around 106.5 L/min. Actual delivery is lower once internal leakage is counted.
5) Can another pump be fitted behind it?
Selected Series 31 builds have a through drive. A second gear or piston pump can be mounted behind the A10VO71, but the coupling and total shaft torque must be checked before the combination is approved.
6) What maintenance points matter most?
Keep the oil clean. Check inlet restriction, case-drain flow, operating temperature and any change in noise. The pump housing needs a drain connection to the reservoir, and a cleanliness level of ISO 4406 20/18/15 or cleaner is a practical baseline for normal operation.
7) How is A10VO71 different from a gear pump?
A gear pump is usually fixed displacement and simpler to install. A10VO71 changes its output through the swashplate and controller. That gives more control over flow, but it also needs cleaner oil and more careful commissioning.
8) What should I send for a quotation?
The complete model code is the fastest route. Also send photos of the shaft end, controller, working ports and rear housing. Add pressure, drive speed, machine use, required quantity and whether a through-drive pump is fitted behind it.
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