Gear pump
Cast iron Hydraulic Gear Pump 2PTF 4-Hole Rectangular Series
Hengyuhang Cast iron External Gear Pump Group 2PTF 4-Hole Rectangular Series is a robust positive displacement gear pump designed to deliver high volumetric efficiency and stable fluid power under demanding industrial and mobile operating pressures.
| Applications of Hengyuhang Cast iron External Gear Pump Group 2PTF 4-Hole Rectangular Series
This cast iron external gear pump is engineered for heavy-duty fluid transfer and hydraulic circuit pressurization across industrial manufacturing, agricultural machinery, and mobile hydraulic systems. It powers auxiliary functions, steering circuits, and drive mechanisms in equipment operating under continuous high loads and severe environmental conditions.
| Key Technical Specifications
Product Model: Hengyuhang Cast iron External Gear Pump Group 2PTF 4-Hole Rectangular Series
Brand Replacement: CASAPPA, Rexroth, Marzocchi, Parker OEM or as requested.
Displacement: 4CC-33CC cm³/rev (0.30 to 2.01 in³/rev)
Rotation Direction: Clockwise (D), counter-clockwise (S), reversible (R)
Speed Range: Min. speed 300 to 350 r/min; Max. speed 2000 to 4000 r/min
Peak Pressure: 180 to 330 bar (2,610 to 4,785 psi)
| Overview of HENGYUHANG Group 2PTF 4-Hole Rectangular Series Cast Iron External Hydraulic Gear Pumps
The HENGYUHANG Group 2PTF 4-Hole Rectangular Series represents specialized continental fluid power engineering, featuring an all-cast-iron three-piece body architecture paired with a classic European 4-bolt rectangular mounting flange. Specifically developed for severe continuous hydraulic duty where conventional aluminum-casing pumps suffer fatigue, thermal expansion, or housing barrel dilation, this series covers a versatile displacement range from 4.95 up to 33.03 cm³/rev (4CC to 33CC). It withstands continuous working pressures up to 285 bar (4,133 psi) and intermittent peak pressures up to 330 bar (4,785 psi), providing seamless 1:1 drop-in replacement across 39 leading international hydraulic manufacturers without requiring mounting bracket redesigns or hydraulic piping alterations.
Manufactured from high-density spheroidal graphite ductile cast iron across the front 4-bolt mounting flange, central gear housing, and rear cover, the pump provides superior mechanical stiffness and vibration resistance, preventing pump body flex and bolt loosening under high cyclic pressure pulsations. The internal rotating group incorporates case-hardened, precision-ground micro-geometry alloy steel gears operating within heavy-duty hydrodynamic composite DU/PTFE sleeve bushings. Dual hydrostatic floating axial pressure balance thrust plates automatically adjust operating clearances to compensate for thermal expansion and face wear, sustaining volumetric efficiencies above 94% while providing quiet, low-pulsation fluid delivery across demanding mobile machinery cabs and heavy industrial manufacturing plants.
| Dimension of HENGYUHANG Group 2PTF 4-Hole Rectangular Series Cast Iron External Hydraulic Gear Pumps
Interface data needed with the drawing:
| Item | Value |
|---|---|
| Mounting flange | European standard 4-bolt rectangular mounting flange (pilot Ø 36.5 -0.025/-0.050 mm with 71.5 × 96.2 mm bolt pitch, 4-Ø 9.0 mm through mounting holes, flange overall 89.5 × 114.2 mm, 5.0 mm pilot depth) |
| Drive shaft | 1:8 European taper shaft with woodruff key (key 3.15 × 6.5 × 16.0 mm, M12 × 1.5 retaining nut tightened to 40 Nm, max drive torque 140 Nm / 1,239 lbf in, Ø 16.65 mm taper base, 39.7 mm shaft extension from pilot face) / Optional cylindrical keyed or splined shaft |
| Outboard bearing | Standard without front bearing (direct bell-housing coupling engagement) / Optional heavy-duty front radial/axial bearing for belt, chain, and pulley drive systems |
| Rotation | Clockwise (D) or Anti-clockwise (S), looking at the drive shaft end (Bi-directional reversible rotation available upon request) |
| Ports position | Side-positioned threaded or flanged ports on body / Rear-cover ports (L or R drain ports G 1/4 with 10–12 mm depth) |
| Inlet Port | British standard pipe parallel thread BSPP (UNI - ISO 228) G 1/2 (depth 20 mm) or G 3/4 (depth 22 mm) / Optional European standard 4-bolt diamond flanged port |
| Outlet Port | British standard pipe parallel thread BSPP (UNI - ISO 228) G 1/2 (depth 20 mm) or G 3/4 (depth 22 mm) / Optional European standard 4-bolt diamond flanged port |
| Seals | N — Buna-N (NBR) elastomeric seals (-20 °C to +85 °C) standard; Viton (FKM) available for high-temperature hydraulic fluids (-15 °C to +110 °C) |
| Body construction | Full heavy-duty spheroidal graphite ductile cast-iron body, front 4-bolt rectangular flange, and rear cover (all-cast-iron construction) |
| Flange mounting bolt torque | 45 ±3 Nm (398 ÷ 425 lbf in) |
| V Screws tie-rod tightening torque | 70 ±7 Nm (558 ÷ 682 lbf in) |
| Pump Installation Specifications HENGYUHANG Group 2PTF 4-Hole Rectangular Series
The HENGYUHANG Group 2PTF 4-Hole Rectangular Series pump utilizes a standardized modular ordering and specification code to ensure precise mechanical, hydraulic, and mounting interchangeability:
Code structure — reference: 2PTF-4H — Group 2 Extreme High-Pressure Cast Iron 4-Hole Rectangular Gear Pump Series
| Segment | Meaning | Standard Options & Features |
|---|---|---|
| Series | 2PTF-4H | Group 2 heavy-duty cast iron external gear pump architecture with 4-hole rectangular flange (4.95 to 33.03 cm³/rev) |
| Displacement | 4 to 31.5 | Nominal model size code (2PTF4, 2PTF6.3, 2PTF8, 2PTF11.2, 2PTF14, 2PTF16, 2PTF20, 2PTF25, 2PTF31.5) |
| Rotation | D / S / R | D: Clockwise; S: Anti-clockwise; R: Reversible / Bi-directional |
| Outboard Bearing | 0 / 1 | 0: Standard without front bearing; 1: With heavy-duty front radial/axial support bearing |
| Drive Shaft | T1 / C1 / S1 | T1: 1:8 European taper shaft with woodruff key (M12 × 1.5 nut); C1: Cylindrical keyed shaft; S1: DIN 5482 splined shaft |
| Mounting Flange | E4 / G4 | E4: European standard 4-bolt rectangular flange (pilot Ø 36.5 mm, 71.5 × 96.2 mm pitch); G4: German 4-hole fixed flange |
| Ports Code | L / P | L: Side body threaded ports (BSPP); P: Rear cover threaded ports |
| Inlet / Outlet | G2 / F2 / U2 | G2: BSPP cylindrical thread (G 1/2, G 3/4); F2: European 4-bolt diamond flange; U2: SAE O-ring boss |
| Seals | N / V | N: Buna-N (NBR) standard; V: Viton (FKM) high-temperature seals |
| Special Features | RV / ST | RV: Integrated internal pressure relief valve; ST: Customized OEM body configuration |
| Reading your replacement code
| Your Target Brand & Model | HENGYUHANG 2PTF 4-Hole Equivalent | Interchange Verification Notes |
|---|---|---|
| CASAPPA POLARIS Cast Iron (PLP20 / 2PTF 4-Hole E2) | HENGYUHANG 2PTF 4-Hole Series | 100% mounting spigot pilot Ø 36.5 mm, 71.5 × 96.2 mm pitch, shaft taper T1, and port centerlines match |
| Bosch Rexroth AZPG (4-Bolt European Cast Iron) | HENGYUHANG 2PTF 4-Hole Series | Identical mounting pilot, shaft woodruff key, and continuous pressure rating match |
| MARZOCCHI GHP2 Series (Standard 4-Bolt Cast Iron) | HENGYUHANG 2PTF 4-Hole Series | Direct mechanical envelope match; identical inlet/outlet thread/flange drillings |
| PARKER PGP511 Cast Iron Series (European 4-Bolt) | HENGYUHANG 2PTF 4-Hole Series | Full hydraulic flow compatibility, exact 4-bolt pitch, and shaft interchange |
| DANFOSS / Turolla Group 2 Heavy Cast Iron 4-Bolt | HENGYUHANG 2PTF 4-Hole Series | Seamless drop-in fit for heavy mobile machinery, tractor implements, and industrial HPUs |
| VIVOLO (Vivoil) XV-2P Heavy 4-Bolt Series | HENGYUHANG 2PTF 4-Hole Series | Direct interchange on shaft, flange, and side threaded/flanged ports |
| SALAMI 2PB / 2PE Cast Iron 4-Bolt Series | HENGYUHANG 2PTF 4-Hole Series | Identical bolt hole pattern, shaft dimensions, and cast iron high-pressure ratings |
| BUCHER Hydraulics QX2 / AP212 Cast Iron 4-Hole | HENGYUHANG 2PTF 4-Hole Series | Direct mounting fit for heavy industrial machine tools, presses, and mobile cranes |
Techspecs — HENGYUHANG Group 2PTF 4-Hole Rectangular Series
Performance Data Across Displacements
| Pump Type | Displacement in³/rev (cm³/rev) | Continuous Pressure p1 (psi / bar) | Intermittent Pressure p2 (psi / bar) | Peak Pressure p3 (psi / bar) | Max. Speed (min⁻¹) | Min. Speed (min⁻¹) | Flow at 1500 r/min (l/min) |
|---|---|---|---|---|---|---|---|
| 2PTF4 | 0.30 (4.95) | 4,133 (285) | 4,350 (300) | 4,785 (330) | 4,000 | 350 | 7.43 |
| 2PTF6,3 | 0.40 (6.61) | 4,133 (285) | 4,350 (300) | 4,785 (330) | 4,000 | 350 | 9.92 |
| 2PTF8 | 0.50 (8.26) | 4,133 (285) | 4,350 (300) | 4,785 (330) | 3,500 | 350 | 12.39 |
| 2PTF11,2 | 0.69 (11.23) | 3,988 (275) | 4,205 (290) | 4,640 (320) | 3,500 | 350 | 16.85 |
| 2PTF14 | 0.89 (14.53) | 3,843 (265) | 4,205 (290) | 4,640 (320) | 3,500 | 350 | 21.80 |
| 2PTF16 | 1.03 (16.85) | 3,770 (260) | 4,205 (290) | 4,640 (320) | 3,000 | 300 | 25.28 |
| 2PTF20 | 1.29 (21.14) | 3,045 (210) | 3,335 (230) | 3,625 (250) | 3,000 | 300 | 31.71 |
| 2PTF25 | 1.61 (26.42) | 2,610 (180) | 2,900 (200) | 3,190 (220) | 2,500 | 300 | 39.63 |
| 2PTF31,5 | 2.01 (33.03) | 2,030 (140) | 2,320 (160) | 2,610 (180) | 2,000 | 300 | 49.55 |
Operating Conditions & Fluid Compatibility
| Operating Parameter | Specification | Recommendation & Limits |
|---|---|---|
| Hydraulic fluid type | Mineral oil-based hydraulic fluids | HL or HLP hydraulic oils to ISO 6743/4; DIN 51524 Class 1 and 2 |
| Fluid operating viscosity | 12 to 100 mm²/s (cSt) | Optimal operating viscosity range: 20 to 80 mm²/s (cSt) |
| Max. cold starting viscosity | Up to 1,000 mm²/s (cSt) | Short duration cold start at low speed without excessive load |
| Fluid operating temperature | -20 °C to +85 °C (-4 °F to +185 °F) | Standard NBR seals; Viton (FKM) seals required for +85 °C to +110 °C |
| Inlet suction line pressure | 0.7 to 3.0 bar absolute (10 to 44 psia) | Minimum suction line absolute pressure 0.7 bar (avoid cavitation) |
| Fluid cleanliness level | Class 20/18/15 to ISO 4406 | Recommended filtration: β25 ≥ 75 on return/suction circuit |
Advantages — HENGYUHANG Group 2PTF 4-Hole Rectangular Series
Extreme Pressure Endurance (Up to 330 bar / 4,785 psi Peak)
Engineered with an all-ductile-cast-iron casing that eliminates barrel expansion, internal clearance changes, and pressure fatigue, supporting continuous heavy-duty service up to 285 bar.
Superior 4-Bolt Anti-Vibration Rigidity
The symmetrical 4-hole rectangular flange (71.5 × 96.2 mm) anchors the pump firmly to the machine bell-housing, effectively neutralizing hydraulic shock pulses, torsional harmonics, and shaft bending stresses.
Direct 1:1 OEM Drop-In Interchangeability
Matches European 4-bolt mounting dimensions, 1:8 tapered shafts (T1), and port centerlines across 39 leading global brands, enabling immediate replacement without machinery modification.
Thermal Stability in Extreme Ambient Conditions
Spheroidal cast iron's thermal expansion coefficient closely matches the hardened alloy steel gear group, preventing internal binding, cavitation, or clearance opening during high-temperature continuous operations.
High Volumetric Efficiency (>94%)
Dual hydrostatic floating thrust plates dynamically maintain perfect axial gear tooth face sealing, minimizing internal slip over thousands of operating hours.
Acoustic Dampening & Low Noise
The dense cast iron mass absorbs gear meshing vibrations and high-frequency fluid noise, ensuring exceptionally quiet operation in enclosed operator cabins.
Reference — HENGYUHANG Group 2PTF 4-Hole Rectangular Series
Series Architecture Across Group 2PTF 4-Hole Rectangular Series
The HENGYUHANG Group 2PTF 4-Hole Rectangular family covers 9 standardized displacements, ensuring optimal hydraulic matching:
Ultra-High Pressure Range (4.95 – 8.26 cm³/rev, up to 330 bar peak): 2PTF4, 2PTF6.3, 2PTF8
High-Pressure Work-Horse Range (11.23 – 16.85 cm³/rev, up to 320 bar peak): 2PTF11.2, 2PTF14, 2PTF16
High-Delivery Output Range (21.14 – 33.03 cm³/rev, up to 250 bar peak): 2PTF20, 2PTF25, 2PTF31.5
Comprehensive Interchangeability Matrix Across 39 Brands
The HENGYUHANG Group 2PTF 4-Hole Rectangular Series provides proven mechanical, mounting, and hydraulic drop-in substitution for the following 39 international manufacturers:
ARGO-HYTOS: GP2 Series 4-bolt cast iron external gear pumps
ASEDA: Group 2 European 4-bolt cast iron tractor implement gear pumps
ATOS: PFG-2 / PFE series heavy 4-bolt cast iron external gear pumps
B&C Hydraulics: GR2 series heavy 4-bolt cast iron gear pumps
BLUEASCEND: Group 2 4-bolt cast iron gear pumps for mobile machinery
Boden: Boden B2 / BG2 4-bolt cast iron hydraulic gear pumps
BONDIOLI & PAVESI: HP Series Group 2 4-bolt cast iron gear pumps (HP2, HPL2)
Brevini Fluid Power (Dana Brevini): OT200 / B200 series heavy 4-bolt cast iron pumps
BUCHER Hydraulics: AP212 / QX2 series 4-bolt cast iron high-pressure gear pumps
Caproni: 20A / 20C / Group 2 4-bolt cast iron hydraulic gear pumps
CASAPPA: POLARIS Cast Iron (PLP20 4-bolt rectangular, 2PTF, Whisper Cast Iron) gear pumps
CONCENTRIC (Haldex): W900 / Calzoni Group 2 4-bolt cast iron external pumps
DANFOSS Power Solutions: SNP2 / Turolla D Series heavy 4-bolt cast iron Group 2 pumps
DUPLOMATIC: IGP2 / GP2 series 4-bolt cast iron external gear pumps
Galtech: 2SP series heavy 4-bolt cast iron gear pumps
GRH Hydraulics: 2PTF series 4-bolt cast iron gear pumps
HANSA-TMP: Group 2 4-bolt cast iron gear pumps and power pack units
HESPER: Group 2 4-bolt cast iron mobile hydraulic gear pumps
HIDRAULICA: Group 2 4-bolt cast iron external gear pumps
HONOR Gear Pumps: Group 2 4-bolt cast iron series pumps
HPI (Hydraulique Professionnelle Industrielle): Series M2 / P2 4-bolt cast iron gear pumps
HYDAC: PGE200 series 4-bolt cast iron external gear pumps
HYDROMAX: Group 2 4-bolt cast iron external hydraulic gear pumps
HYDRONIT: Group 2 4-bolt cast iron power pack central block gear pumps
JIHOSTROJ: P23 / Q2 Series Group 2 4-bolt cast iron hydraulic gear pumps
JOYANG: Group 2 4-bolt cast iron gear pumps for material handling
KOMPASS: Group 2 4-bolt cast iron industrial gear pumps
KRACHT: KF 2 / KP 2 series 4-bolt cast iron high-performance gear pumps
MARZOCCHI: GHP2 / 2P series 4-bolt cast iron high-pressure gear pumps
MetaHydra: Group 2 4-bolt cast iron custom gear pumps
PARKER Hannifin: PGP511 Cast Iron Series 4-bolt Group 2 gear pumps
REXPOWER: Group 2 4-bolt cast iron external gear pumps
Bosch Rexroth: AZPG Series 4-bolt cast iron Group 2 gear pumps
REXROTH-SIGMA: Sigma Group 2 4-bolt cast iron gear pumps
RONZIO: 02 Series Group 2 4-bolt cast iron high-pressure gear pumps
ROQUET: 2L / 2M Series Group 2 4-bolt cast iron external gear pumps
SALAMI: 2PB / 2PE series 4-bolt cast iron heavy-duty gear pumps
SDH (Shengda Hydraulics): Group 2 4-bolt cast iron gear pumps
VIVOLO (Vivoil): X2P / XV-2P Series heavy-duty 4-bolt Group 2 gear pumps
7. Brand Replacement
Quanzhou Hengyuhang Power Technology Co., Ltd. manufactures the Group 2PTF 4-Hole Rectangular Cast Iron Series conforming to international OEM European 4-bolt mounting standards. Every manufactured pump undergoes 100% end-of-line verification, including volumetric efficiency benchmarking, continuous rated pressure testing, and port thread gauge inspection. Equipment operators and hydraulic distributors can replace worn or discontinued original pumps from CASAPPA, Rexroth, MARZOCCHI, PARKER, and DANFOSS with zero alterations to existing bell housings, electric motor couplings, or hydraulic plumbing. Custom batch manufacturing with specialized drive shafts, special flange spigots, or integrated relief valves is fully supported.
8. Applications of HENGYUHANG Group 2PTF 4-Hole Rectangular Series
Mobile Construction Machinery: Mini and compact excavators, skid steer loaders, compact wheel loaders, vibratory rollers, and hydraulic trenchers subject to extreme cyclic pressure spikes.
Agricultural & Forestry Equipment: Medium-to-high horsepower agricultural tractors, timber harvesters, feller bunchers, round balers, and heavy front-end loader attachments.
Material Handling & Aerial Lifts: Heavy counterbalanced forklifts, rough-terrain telehandlers, container side-loaders, and aerial work platform drive systems.
Stationary Industrial Hydraulic Power Units (HPUs): High-pressure hydraulic press clamping circuits, continuous machine tool lubrication loops, injection molding auxiliary hydraulics, and foundry handling systems.
Municipal & Specialty Vehicles: Waste compactor trucks, municipal road sweepers, snow plows, and marine winch drive mechanisms.
9. Package & Shipping
| Item | Details |
|---|---|
| Packaging | Neutral heavy-duty export carton with internal molded foam suspension; individual moisture-resistant sealed VCI polybags; export standard fumigation-free wooden pallets for batch consignments. |
| Selling Unit | Single item (MOQ: 1 piece for standard models; low MOQ for customized OEM configurations). |
| Single Package Size | 26.0 × 18.0 × 16.0 cm (10.24 × 7.09 × 6.30 in) per pump. |
| Single Gross Weight | 5.80 to 8.60 kg (12.79 to 18.96 lbs) depending on displacement and flange material. |
| Standard Lead Time | 3–7 business days for stock items; 15–20 business days for volume OEM batch customization. |
| Logistics & Express | Air express (DHL, FedEx, UPS, TNT), air freight, sea freight (FCL / LCL), and multimodal door-to-door DDP services worldwide. |
| Customization Services | Custom nameplate laser engraving, private labeling, custom drive shafts, integrated valves, and bespoke flange geometries. |
| Warranty & Support | 12 months comprehensive warranty from dispatch date; full lifetime technical support. |
10. Why Choose Hengyuhang?
Direct Factory Precision Manufacturing & CNC Excellence: Equipped with multi-axis CNC machining centers, high-precision gear hobbing machines, and automated micro-honing lines, Hengyuhang maintains sub-micron dimensional tolerances (Ra < 0.2 μm) on all internal gear teeth, journals, and housing cavities. This guarantees minimal internal friction, ultra-low hydraulic pulsation, and repeatable performance across high-volume production batches.
100% Full-Cycle Multi-Parameter Factory Inspection: Every single hydraulic pump undergoes rigorous end-of-line digital testing before dispatch. Quality checks cover full continuous rated and peak pressure hold, internal bypass leakage verification, high/low temperature volumetric efficiency testing (>94%), and acoustic noise spectrum profiling, ensuring zero-defect delivery to global OEM assembly lines.
Seamless 1:1 OEM Drop-In Interchangeability: Conforming precisely to international European standard, SAE ("AA", "A", "B", "C"), and DIN/ISO mounting configurations, our pumps deliver genuine plug-and-play replacement for over 39 leading global manufacturers. Machine operators and distributors can replace original units without modifying bell housings, drive couplings, or hydraulic line geometry, drastically reducing costly machine downtime.
Flexible Engineering Customization & Rapid Prototyping: Backed by an experienced in-house hydraulic engineering team, Hengyuhang offers comprehensive bespoke customization, including non-standard 4PTF/6PTF mounting flanges, special shaft tapers or splines, dual port configurations, and integrated relief or priority flow control valves. We support low-MOQ trial orders and agile custom prototyping to resolve obsolescence issues for out-of-production machinery.
Robust Supply Chain, Extensive Inventory & Fast Global Dispatch: With dedicated raw material casting facilities, high-strength extruded aluminum alloy reserves, and extensive finished inventory across Group 0, Group 1, Group 2, and Group 3 platforms, standard orders ship within 48 to 72 hours. We partner strategically with major international logistics carriers (DHL, FedEx, UPS, air/ocean freight) to provide seamless door-to-door DDP global delivery.
12-Month Comprehensive Warranty & Lifetime Technical Support: All Hengyuhang hydraulic pumps are backed by a complete 12-month factory warranty and dedicated lifetime technical assistance. Our specialized fluid power engineers provide free 24-hour CAD drawing verification, OEM cross-reference confirmation, hydraulic displacement calculations, and system troubleshooting to ensure total operational peace of mind.
Cast Iron External Hydraulic Gear Pump Group 2PTF 4CC–33CC (4-Hole Rectangular Series) is a severe-duty external gear pump engineered with a monolithic high-strength cast iron body and rigid front/rear end covers. Specifically designed for extreme hydraulic duty cycles and high continuous operating pressures where aluminium-casing pumps encounter mechanical fatigue and structural deflection, this series covers 9 displacement ratings from 4.95 to 33.03 cm³/rev (covering the 4CC to 33CC nominal range). It supports continuous working pressures ($p_1$) up to 285 bar / 4133 psi (peak pressures up to 330 bar / 4785 psi) and rotational speeds up to 4000 min⁻¹. Configured with the standard European 4-bolt rectangular mounting flange (71.5 × 96.2 mm bolt pattern with Ø36.5 mm centering pilot), a high-torque 1:8 taper shaft (M12×1.5 with 3.15 mm woodruff key, rated up to 140 Nm), and BSPP gas straight thread ports (G 1/2 and G 3/4 conforming to UNI-ISO 228), the Group 2PTF 4-hole rectangular series provides exceptional volumetric efficiency, superior resistance to cyclic pressure spikes, low operating noise, and extended operational life in heavy-duty mobile and industrial hydraulic systems.
| Applications
The Group 2PTF 4-hole rectangular series cast iron gear pump is engineered for severe-duty mobile machinery and high-pressure hydraulic circuits, including agricultural tractors, combine harvesters, telescopic handlers, heavy-duty forklifts, rough-terrain articulated wheel loaders, mini and compact excavators, backhoe loaders, paving and compaction machines, municipal refuse compactor trucks, forestry harvesters, snowplow power units, and stationary industrial hydraulic power packs operating under continuous high pressures, high oil temperatures, and severe mechanical shock loads.
| Key Specifications Overview
| Parameter | Specification |
|---|---|
| Series | Group 2PTF Cast Iron Series (European 4-Hole Rectangular Mounting) |
| Displacement Range | 4.95 ~ 33.03 cm³/rev (0.30 ~ 2.01 in³/rev across 9 models: 2PTF4 to 2PTF31,5) |
| Continuous Operating Pressure (p1) | 140 ~ 285 bar (2030 ~ 4133 psi; 285 bar for 4.95~8.26 cc; 260~275 bar for 11.2~16.85 cc) |
| Intermittent Operating Pressure (p2) | 160 ~ 300 bar (2320 ~ 4350 psi; 300 bar for 4.95~8.26 cc; 290 bar for 11.2~16.85 cc) |
| Max. Peak Pressure (p3) | 180 ~ 330 bar (2610 ~ 4785 psi; 330 bar for 4.95~8.26 cc; 320 bar for 11.2~16.85 cc) |
| Rotational Speed Range | 300 ~ 4000 min⁻¹ (displacement dependent; up to 4000 min⁻¹ for 2PTF4 and 2PTF6,3) |
| Housing Material | High-tensile rigid cast iron body and end covers (Casappa Group 2 cast iron architecture) |
| Mounting Flange | European standard 4-bolt rectangular pattern (71.5 × 96.2 mm bolt centers, Ø36.5 mm pilot, 4 × Ø9 mm holes) |
| Drive Shaft | 1:8 European taper shaft with M12×1.5 threaded tip, 3.15 × 6.5 × 16 mm woodruff key (max. torque 140 Nm / 1239 lbf in) |
| Port Type | British standard pipe parallel gas straight thread (BSPP conforms to UNI - ISO 228): G 1/2 (depth 20 mm) or G 3/4 (depth 22 mm) |
| Tie-Rod Screws Torque | 70 ± 7 Nm (558 ÷ 682 lbf in) |
| Rotation Direction | Clockwise (Right / R) standard; Counter-clockwise (Left / L) available; optional G 1/4 case drain ports |
| Hydraulic Fluid | Mineral-based hydraulic oil (ISO VG 46 / HLP) |
| Operating Temperature Range | -25°C to +80°C (standard NBR seals) / up to +100°C with optional Viton seals |
| Technical Parameters & Performance Ratings (Group 2PTF)
| Pump Type | Displacement | Max. Pressure (bar) | Max. Pressure (psi) | Max. Speed min⁻¹ | Min. Speed min⁻¹ | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| cm³/rev | in³/rev | p1 | p2 | p3 | p1 | p2 | p3 | |||
| 2PTF4 | 4.95 | 0.30 | 285 | 300 | 330 | 4133 | 4350 | 4785 | 4000 | 350 |
| 2PTF6,3 | 6.61 | 0.40 | 285 | 300 | 330 | 4133 | 4350 | 4785 | 4000 | 350 |
| 2PTF8 | 8.26 | 0.50 | 285 | 300 | 330 | 4133 | 4350 | 4785 | 3500 | 350 |
| 2PTF11,2 | 11.23 | 0.69 | 275 | 290 | 320 | 3988 | 4205 | 4640 | 3500 | 350 |
| 2PTF14 | 14.53 | 0.89 | 265 | 290 | 320 | 3843 | 4205 | 4640 | 3500 | 350 |
| 2PTF16 | 16.85 | 1.03 | 260 | 290 | 320 | 3770 | 4205 | 4640 | 3000 | 300 |
| 2PTF20 | 21.14 | 1.29 | 210 | 230 | 250 | 3045 | 3335 | 3625 | 3000 | 300 |
| 2PTF25 | 26.42 | 1.61 | 180 | 200 | 220 | 2610 | 2900 | 3190 | 2500 | 300 |
| 2PTF31,5 | 33.03 | 2.01 | 140 | 160 | 180 | 2030 | 2320 | 2610 | 2000 | 300 |
| Dimensions & Port Sizes (4-Hole Rectangular Series)
| Pump Type | Total Length A | Port Center Position B | Port Thread & Depth C | |||
|---|---|---|---|---|---|---|
| mm | in | mm | in | Thread (BSPP) | Depth mm (in) | |
| 2PTF4 | 87.5 | 3.445 | 60.0 | 2.362 | G 1/2 | 20 mm (0.787 in) |
| 2PTF6,3 | 90.0 | 3.543 | 62.5 | 2.461 | G 1/2 | 20 mm (0.787 in) |
| 2PTF8 | 92.5 | 3.642 | 65.0 | 2.559 | G 1/2 | 20 mm (0.787 in) |
| 2PTF11,2 | 96.0 | 3.780 | 68.5 | 2.697 | G 1/2 | 20 mm (0.787 in) |
| 2PTF14 | 100.0 | 3.937 | 67.0 | 2.638 | G 1/2 | 20 mm (0.787 in) |
| 2PTF16 | 105.5 | 4.154 | 72.5 | 2.854 | G 3/4 | 22 mm (0.866 in) |
| 2PTF20 | 112.0 | 4.409 | 79.0 | 3.110 | G 3/4 | 22 mm (0.866 in) |
| 2PTF25 | 120.0 | 4.724 | 72.0 | 2.835 | G 3/4 | 22 mm (0.866 in) |
| 2PTF31,5 | 130.0 | 5.118 | 82.0 | 3.228 | G 3/4 | 22 mm (0.866 in) |
2PTF Series — Displacement List
Available Displacements
| Type |
|---|
| 2PTF4 |
| 2PTF6,3 |
| 2PTF8 |
| 2PTF11,2 |
| 2PTF14 |
| 2PTF16 |
| 2PTF20 |
| 2PTF25 |
| 2PTF31,5 |
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