Parker 20/903100 hydraulic gear pump is widely used in industrial and mobile hydraulic systems for stable and efficient fluid power transmission. As demand grows for cost-effective and reliable alternatives, HENGYUHANG provides a high-quality hydraulic gear pump replacement for Parker 20/903100, designed to meet the same application requirements while offering competitive value.
Features
Parker 20/903100 hydraulic gear pump is designed to provide efficient hydraulic power with the following key features:
Stable and continuous oil flow output
Low noise operation with smooth gear meshing
Compact design for easy installation
Reliable performance as a high pressure hydraulic gear pump
Durable materials for long service life
Suitable for continuous-duty hydraulic applications
These features make the pump suitable for a wide range of industrial and mobile hydraulic systems.
20/912800 hydraulic gear pump is widely applied in:
Hydraulic gear pump for industrial applications
Construction machinery hydraulic gear pump systems
Material handling hydraulic gear pump equipment
Hydraulic power units
Mobile and stationary hydraulic systems
| Item | Specification |
|---|---|
| Product Model | Parker 20/903100 Hydraulic Gear Pump |
| Pump Type | Twin (Tandem) Hydraulic Gear Pump |
| Front Pump Displacement | 33 cc/rev (≈ 33 L/min @ 1000 rpm) |
| Rear Pump Displacement | 29 cc/rev (≈ 29 L/min @ 1000 rpm) |
| Rotation Direction | Counter-Clockwise (viewed from shaft end) |
| Input Shaft | 1″ diameter keyed shaft / SAE spline (depending on version) |
| Mounting Flange | SAE B, 2-bolt mounting |
| Inlet Port | Combined 2″ SAE flange inlet |
| Front Outlet Port | 1-1/16″-12 UNF |
| Rear Outlet Port | 7/8″-14 UNF |
| Maximum Operating Pressure | 275 bar (both sections) |
| Maximum Input Torque | Approx. 325 Nm |
| Approximate Weight | 26 kg |
| Interchangeable / Cross Part Numbers | 20/903100, 20/902900, 20/912800, 7470, 4070, 4072, 400/E0868, 332/G6350 |
The Parker 20/903100 gear pump (or equivalent replacement pump) is commonly used in JCB Backhoe Loaders and compatible excavator-type machines.
| JCB Series | Compatible Models |
|---|---|
| JCB 3CX Series | 3CX, 3CX CM, 3CX Contractor, 3CX PC, 3CX 4T |
| JCB 3CX 444 Series | 3CX444, 3CX444 SUPER, 3CX444S PC |
| JCB 3CX SM Series | 3CXSM, 3CXSM 4T, 3CXSM444 SUPER, 3CXSM444S PC |
| JCB 3CXT Series | 3CXT20, 3CXT30, 3CXT35 |
| JCB 4C / 4CX Series | 4C, 4C30, 4C35, 4CX444, 4CX444 SUPER |
| JCB 4CN Series | 4CN30, 4CN35, 4CN444, 4CN444 SUPER / S PC |
Replacement & Compatibility Notes
The Parker 20/903100 is a tandem gear pump (33 cc + 29 cc) designed to supply hydraulic power for multiple functions simultaneously.
Replacement pumps must match mounting flange, shaft type, port sizes, rotation direction, and displacement.
HENGYUHANG gear pumps are engineered to be dimensionally and functionally compatible and can be used as a direct replacement for Parker 20/903100 in the above JCB models.
Always verify machine serial number and hydraulic configuration before installation.
OEM & Replacement Compatibility
The 20/912800 hydraulic gear pump is produced according to OEM specifications and can be used as a direct replacement for original equipment. Custom options such as shaft type, mounting configuration, and port layout are available upon request.
Detailed technical drawings and performance data can be provided for OEM verification.
Why Choose HENGYUHANG as a Replacement for Parker 20/903100 Gear Pump
HENGYUHANG gear pumps are engineered to serve as a reliable and cost-effective replacement for the Parker 20/903100 hydraulic gear pump. Our replacement pumps are designed to match the key functional requirements of the original unit, including mounting dimensions, displacement configuration, operating pressure, and flow performance, allowing for direct installation in compatible hydraulic systems.
By focusing on precision machining, stable sealing performance, and strict quality control, HENGYUHANG ensures consistent operation and long service life under continuous working conditions. Our pumps provide dependable hydraulic output while helping customers reduce procurement and maintenance costs.
With flexible production capability, stable supply, and responsive technical support, HENGYUHANG offers a practical alternative solution for customers seeking a dependable replacement for Parker 20/903100, without compromising system performance or reliability.
FAQ – Parker 20/903100 Gear Pump Replacement
Q1: Can HENGYUHANG gear pumps directly replace Parker 20/903100?
Yes. HENGYUHANG gear pumps are designed to be dimensionally and functionally compatible with the Parker 20/903100. Key parameters such as mounting flange, shaft type, displacement, rotation direction, and pressure range are matched for direct replacement in compatible systems.
Q2: Is any modification required when installing the replacement pump?
In most cases, no modification is required. The HENGYUHANG replacement pump is engineered for direct installation. However, we always recommend confirming the machine model, shaft configuration, and port connections before installation.
Q3: What applications is the HENGYUHANG 20/903100 replacement suitable for?
The replacement pump is widely used in JCB backhoe loaders and other industrial and mobile hydraulic systems that originally use Parker 20/903100 gear pumps.
Q4: How does the performance compare with the original Parker pump?
HENGYUHANG replacement pumps provide stable flow output, reliable pressure performance, and smooth operation under continuous working conditions, meeting the functional requirements of the original pump while offering better cost efficiency.
Q5: Do you provide technical support and compatibility confirmation?
Yes. Our technical team can assist with model confirmation, cross reference, and installation guidance to ensure the correct replacement solution for your equipment.
Q6: What is the lead time for HENGYUHANG replacement pumps?
Lead time depends on order quantity and configuration. Standard replacement models are usually available with short production cycles. Please contact us for exact delivery details.
Inquiry & Technical Support
Need pricing, datasheets, or OEM solutions for the 20/903100 hydraulic gear pump?
📩 Contact us today to confirm compatibility and receive a fast quotation.
More other JCB Hydraulic Gear Pumps we can provide
| 7049532007 | 333/C5234 | 20/925592 | 20/925338 |
| 20/925732 | 333/G5392 | 20/925357 | 20/925591 |
| 20/903100 | 20/925581 | 7029520007 | 332/F9032 |
| 20/925339 | 7441N | 7029120047 | 20/925586 |
| 7029120023 | 7029120007 | 7029120009 | 7029120005 |
| 7029120078 | 7029120079 | 7029121120 | 20/918300 |
| 332/F9030 | 20/925578 | 919/75002 | 7029520007 |
| 20/925580 | 332/F9028 | 333/G5393 | 7049520006 |
| 20/925579 | 20/911200 | 7029120022 | 20/925366 |
| 20/902900 | 333/G5391 | 20/925588 | 20/903300 |
| 333/G5390 | 20/925340 | 7029120048 | 332/G7134 |
| 332/G7135 | 20/925341 | 7029122001 | 333/G5389 |
| 332/F9029 | 20/903200 | 7029120077 | 20/903000 |
| 7049520006 | 20/925356 | 20/925472 | 7029530002 |
| 20/925613 | 20/925337 | 332/E6671 | 20/925355 |
| 20/912800 | 332/F9031 |
| JCB CODE |
| 332/F9030 20/925580 7029120047 |
| 333/G5390 332/G7135 |
| 332/F9032 |
| 332/F9029 20/925579 20/925339 20/925338 |
| 332/F9031 20/925581 333/G5391 |
| 20/925340 7029120005 |
| 20/925341 |
| 20/925366 220/925586 333/C5234 333/G5392 |
| 20/925337 |
| 20/925578 20/925586 332/F9028 |
| 20/912800 20/903100 20/902900 |
| 20/903200 20/911200 |
| 20/902900 |
| 20/903000 |
| 20/903300 |
| 20/925592 20/925357 |
| 7049520006332/E6671 |
| 919/75002 |
| 20/925732 |
| 20/925588 20/925356 7029530002 |
| 20/925591 20/918300 |
JCB gear pumps are an essential part of JCB machinery, ensuring efficient hydraulic power for a variety of applications. With their robust design and precision engineering, JCB gear pumps deliver reliable performance, contributing to the functionality of JCB excavators, loaders and other equipment. Whether powering excavation, lifting or maneuvering hydraulic systems, JCB gear pumps play a key role in increasing the overall productivity and versatility of JCB machinery on the job site.


HENGYUHANG Company is a set design, production, sales in one of the hydraulic components production company, the company has advanced hydraulic components manufacturing technology and technology, the use of high-precision equipment CNC machining center, gear hot processing automatic production line, , automatic heat treatment multi-purpose furnace, single-piece flow assembly line, automatic hydraulic pump performance test bench. Intelligent equipment adopts automatic unmanned production, and realizes online measurement to ensure product consistency and reliability, intelligent system uses ERP, MES management software, improve production efficiency, and achieve product traceability.
Hengyuhang Power Technology produces and sells external gear pumps, hydraulic synchronous motors, multi-pump units, gear pumps with built-in valves, and custom valve blocks. Meanwhile, according to the specific needs of customers, we provide a variety of products with special specifications.And it can also be used as a substitute for other products (such as Rexlex, Danfoss, MARZOCCHI, Parker, RONZIO, Atos, Buchet, ECKERLE, CONCENTRIC, HYADC, JIHOSTROJ, Hydraulic, SDH, VIVOLO, ARGO-HYTOS, HESPER, HPLPA, HPI, DUPLOMATIC, ROQUET, BODEN,PERMCOP, Caproni, DUPLOMATIC, HIDRAULICA, SETTIMA, SALAMI, HONOR, SHIMADZU, GRH, Brevini, Galtech, BONDIOLI, REXROTH-SIGMA, BLUEASCEND, RISUNY, SUMITOMO, HYDROMAX, SCENERY, REXPOWER, CML, HOERBIGER, SUNNY, HYTEK, Hydro-pack, )
HENGYUHANG also sells a wide range of other international brands of hydraulic pumps, hydraulic valves, hydraulic motors, hydraulic cylinders, hydraulic oil seals, hydraulic equipment and accessories, and has high-quality overseas ordering channels
HENGYUHANG products are mainly used in the supporting services of industries such as automobiles, construction machinery, agricultural machinery, aerial work platforms, hydraulic systems, logistics handling vehicles, new energy vehicles, metallurgical machinery, petroleum machinery, machine tools, and wind powe
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