Gear pump

Cast iron External Gear Pump, Group 3PTF(20~71cm³/rev.)

HENGYUHANG 3PTF hydraulic gear pump is a high-performance external gear pump designed for medium to high pressure hydraulic systems. Manufactured with precision-machined gears and reinforced housing, the 3PTF series delivers stable flow, high volumetric efficiency, low noise, and long service life.

Engineered as a direct replacement for major European and American gear pump brands, the 3PTF series offers reliable performance while significantly reducing procurement cost and lead time. It is fully compatible with common mounting standards, shaft types, and port configurations used by global hydraulic pump manufacturers.

Technical Information

Displacement: 20~71cm³/rev.

Rotation direction: clockwise (D), counter-clockwise(S), reversible (R)

Min. speed: 400~600r/min

Max. speed: 2500~3500r/min

Peak pressure: 220~280bar

Served Industry

Construction machinery, Sanitation vehicles, Hydraulic systems

Features

Heavy duty special DU bearing with long working life

High strength cast iron body with special designed structure

Custimized mounting size and oil ports

100% factory teasted

Copper pressure balanced wear plates maintain high pump efficiency throughout all opearating ranges

High precision carburizing&quenching gears with extra hardness









Description


Core advantages:

  • High pressure capability and excellent durability

  • Smooth operation with low pulsation

  • Wide displacement range for flexible system design

  • Ideal for OEM replacement and aftermarket applications

Application Industries

The HENGYUHANG 3PTF gear pump is widely used in mobile and industrial hydraulic systems, including:

  • Construction machinery (excavators, loaders, cranes)

  • Agricultural machinery (tractors, harvesters)

  • Industrial hydraulic power units

  • Material handling equipment

  • Road construction and municipal machinery

  • Marine and offshore auxiliary systems

Its robust design ensures stable operation even in harsh working environments and continuous-duty cycles.

Technical Parameters (Typical)

  • Pump Type: External hydraulic gear pump

  • Series: 3PTF

  • Displacement Range: Medium to large displacement (model dependent)

  • Max Working Pressure: Up to high-pressure industrial standard

  • Speed Range: Suitable for both low and high RPM applications

  • Mounting: European standard flanges

  • Shaft Options: Keyed shaft / spline shaft

  • Port Options: SAE / BSP / Metric

  • Rotation: Bi-directional (CW / CCW)

Detailed dimensions and performance curves are available upon request.

HENGYUHANG 3PTF series can perfectly replace the following imported hydraulic gear pump brands and models:

  • Parker gear pump replacement

  • JIHOSTROJ gear pump replacement

  • CASAPPA gear pump replacement

  • David Brown gear pump replacement

  • METARIS gear pump replacement

The 3PTF series matches mounting dimensions, shaft specifications, port locations, and performance parameters, enabling drop-in replacement without system modification.

This makes HENGYUHANG an ideal choice for:

  • OEM cost optimization

  • Aftermarket repair and maintenance

  • Supply chain localization

Why Choose Our 3PTF Hydraulic Gear Pump?

Choosing the HENGYUHANG 3PTF hydraulic gear pump means choosing a reliable, cost-effective, and proven solution for replacing imported external gear pumps. Designed to meet international hydraulic standards, the 3PTF series offers stable performance, high pressure capability, and long service life, even in demanding industrial and mobile applications.

Compared with imported brands, our 3PTF gear pump provides 100% dimensional compatibility, allowing direct replacement without changing mounting, shafts, or ports. This significantly reduces downtime and installation costs. With optimized gear profiles and strict quality control, the 3PTF delivers high volumetric efficiency, low noise, and excellent durability.

In addition, HENGYUHANG ensures short lead times, flexible customization, and competitive pricing, helping customers reduce supply chain risks while maintaining consistent hydraulic system performance. Whether for OEM production or aftermarket replacement, the 3PTF series is a trusted external gear pump manufacturer solution for Parker, CASAPPA, JIHOSTROJ, David Brown, and METARIS gear pump replacements.


3PTF Hydraulic Gear Pump – FAQ

Q1: What is the 3PTF hydraulic gear pump used for?

The 3PTF hydraulic gear pump is designed for medium to high pressure hydraulic systems. It is widely used in construction machinery, agricultural equipment, industrial hydraulic power units, material handling systems, and mobile hydraulics where stable flow and reliable performance are required.


Q2: Can the 3PTF gear pump replace Parker or CASAPPA gear pumps?

Yes. The HENGYUHANG 3PTF gear pump can be used as a direct replacement for many models from Parker, CASAPPA, JIHOSTROJ, David Brown, and METARIS. The mounting dimensions, shaft types, port positions, and performance parameters are fully compatible, allowing installation without system modification.


Q3: What are the main advantages of the 3PTF external gear pump?

Key advantages include:

  • High pressure capability and long service life

  • Stable flow with high volumetric efficiency

  • Low noise and smooth operation

  • Standardized mounting for easy replacement

  • Short lead time and competitive pricing

These features make the 3PTF an ideal external gear pump manufacturer solution for OEM and aftermarket applications.


Q4: Is the 3PTF gear pump suitable for continuous-duty operation?

Yes. The 3PTF series is designed for continuous and heavy-duty operation. Precision-machined gears, reinforced housing, and strict quality control ensure reliable performance even under demanding working conditions.


Q5: What shaft and port options are available for the 3PTF pump?

The 3PTF hydraulic gear pump is available with keyed shafts or spline shafts, and multiple port options including SAE, BSP, and metric connections, making it easy to match different hydraulic system requirements.


Q6: How does the 3PTF gear pump compare to imported brands in cost and delivery?

Compared to imported gear pumps, the 3PTF series offers significant cost advantages and shorter delivery times, while maintaining comparable performance and reliability. This helps reduce maintenance costs and supply chain risks.


Q7: Can the 3PTF gear pump be customized?

Yes. HENGYUHANG supports customization for displacement, shaft type, port configuration, and rotation direction, making the 3PTF suitable for both standard replacement and OEM projects.


Q8: How can I select the correct 3PTF replacement model?

You can select the correct model by providing:

  • Original pump brand and model

  • Displacement and working pressure

  • Shaft type and port size
    Our technical team will recommend the exact 3PTF equivalent model for your application.


CASAPPA, Parker PGP & JIHOSTROJ Hydraulic Gear Pump Models

BrandSeries / ModelTypical Model ExamplesNotes / Displacement Range
CASAPPAPOLARIS PL / PLPPLP10·1, PLP10·2, PLP10·3, PLP20·4, PLP20·6, PLP20·8Aluminium external gear pumps; 1.07–33.03 cm³/rev

POLARIS PHPH20·16, PH20·31.5Cast iron Polaris high-pressure series

KP20 SeriesKP20·4, KP20·6.3, KP20·8, KP20·11.2, KP20·14, KP20·16, KP20·20, KP20·25, KP20·31.5Medium displacement cast iron gear pumps

KP30 SeriesKP30·27, KP30·34, KP30·38, KP30·43, KP30·51, KP30·56, KP30·61, KP30·73Medium displacement industrial gear pumps

KP35 SeriesKP35·63, KP35·71, KP35·80, KP35·90, KP35·100Large displacement gear pump options

KP40 SeriesKP40·63, KP40·73, KP40·87, KP40·100, KP40·109, KP40·121, KP40·133, KP40·151, KP40·160, KP40·180Large cast iron heavy-duty gear pumps
ParkerPGP020 / PGP025PGP020, PGP025Small displacement gear pump series

PGP030 / PGP031PGP030, PGP031Small to medium displacement

PGP050 / PGP051PGP050, PGP051Medium displacement gear pumps

PGP075 / PGP076PGP075, PGP076Medium to large displacement

PGP315PGP315~7.6 – 40.6 cm³/rev

PGP330PGP330~16 – 65 cm³/rev

PGP350PGP350~21 – 105 cm³/rev

PGP365PGP365~44 – 147.5 cm³/rev

PGP505PGP505Group 1 aluminium gear pumps

PGP511 / PGP511HPGP511, PGP511HLow-noise aluminium gear pump series

PGP517 / 517H / 523H / 529HPGP517, PGP517H, PGP523H, PGP529HExpanded aluminium gear pump variants

PGP610 / PGP620 / PGP640PGP610, PGP620, PGP640Large displacement cast iron gear pumps
JIHOSTROJP23 SeriesP23-1.2R/L, P23-1.6R/L, P23-2.1R/L, P23-2.5R/L, P23-3.3R/L, P23-3.6R/LCompact gear pumps; ~0.8 – 11.8 cm³/rev

J SeriesJ-xx (various models)Displacement ~2 – 15 cm³/rev

T3 SeriesT3-xxDisplacement ~4 – 31 cm³/rev

UD / UDD SeriesUD-xxDisplacement ~5 – 39 cm³/rev

Q2 SeriesQ2-xxDisplacement ~10 – 100 cm³/rev

QHD SeriesQHD0, QHD1, QHD2Heavy-duty gear pumps; ~7 – 150 cm³/rev

GHD SeriesGHD0, GHD1, GHD2Heavy-duty industrial gear pumps


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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HENGYUHANG Power Technology Co., LTD

Location

No. 173, Xiacuo, Sihuang Village, Xiamei Town, Nan 'an City, Fujian Province

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