Cast iron Hydraulic Gear Pump 6PTF SAE C 2/4-Bolt

| Overview of HENGYUHANG 6PTF SAE C 2/4-Bolt Series

The HENGYUHANG 6PTF SAE C 2/4-Bolt Series is an ultra-heavy-duty Group 6 external hydraulic gear pump engineered for severe-duty mobile and industrial applications requiring high flow rates and extreme pressure capability. Constructed entirely from high-tensile spheroidal graphite ductile iron (QT500) — including the front mounting flange, body casing, and rear cover — this pump provides exceptional fatigue strength, structural rigidity, and resistance to bore distortion under intense cyclic hydraulic loading. The precision-machined 12-tooth gear set and hydrostatically balanced floating thrust plates deliver outstanding volumetric efficiency exceeding 94% with minimal internal bypass. Featuring a universal combination SAE C 2/4-bolt mounting flange (Centring pilot Ø 127.0 mm / 5.00" h8, 2-bolt diagonal spacing 181.0 mm / 7.125", 4-bolt square pattern 114.5 × 114.5 mm / 4.50" × 4.50", Cover Code 14) and high-strength SAE drive shafts (Shaft Code 07.00 / 04 / 01), this series offers complete 1:1 OEM drop-in interchangeability across 27+ international manufacturers.

| Dimension of HENGYUHANG 6PTF SAE C 2/4-Bolt Series

| Interface Data Needed with the Drawing (Dimensional Reference Table)

| Pump Installation Specifications HENGYUHANG 6PTF SAE C 2/4-Bolt Series

| Comprehensive Ordering Code Breakdown (Hengyuhang 6PTF Catalogue Structure)

Code structure — reference: 6PTF−D−R−C−S−P−M−B

| Reading Your Replacement Code

| Techspecs of HENGYUHANG 6PTF SAE C 2/4-Bolt Series

| Performance Data Across Displacements

Note: Reference test conditions: ISO VG 46 hydraulic mineral oil, T = 50 °C, ν = 30 mm²/s.

Group 6PTF Cast Iron Series

Note: Technical values represent nominal catalogue reference ratings. Final permissible continuous operating pressures, speeds, and displacement selection are subject to fluid viscosity, operating temperature, and drive shaft torque capacity. Consult Hengyuhang engineering for custom configurations.

| Operating Conditions & Fluid Compatibility

Advantages

Severe-Duty All-Cast-Iron Construction

Engineered from high-density spheroidal graphite ductile iron (QT500), offering supreme fatigue endurance, extreme rigidity, and high pressure capability up to 350 bar (5,076 psi) without body deformation.

Universal SAE C Combination 2/4-Bolt Flange

Incorporates a dual-geometry flange (Cover Code 14) accommodating both 2-bolt oval and 4-bolt square mounting patterns (Pilot Ø127.0 mm / 5.00"), maximizing replacement versatility across heavy machinery.

High Flow Capacity up to 202 l/min

Large displacement range (20 to 135 cm³/rev) delivers high delivery flow rates exceeding 200 l/min from a single compact unit, minimizing system plumbing complexity.

Heavy-Duty Drive Shaft Package

High-torque alloy steel drive shafts (including SAE 14T involute spline and 1-1/4" keyed options) withstand intense radial and axial drive forces from engine power take-offs.

Superior Volumetric Efficiency (>94%)

Precision CNC-ground gear teeth (Ra < 0.2 μm) and pressure-compensated floating thrust plates eliminate internal bypass and maintain high volumetric efficiency across full operating temperatures.

Low Noise & Vibration Damping

Cast iron construction naturally absorbs mechanical resonance and pressure ripples, delivering remarkably quiet operation in demanding mobile cab environments.

Reference

Series Architecture & Displacements

• Series Nomenclature: HENGYUHANG Cast Iron Hydraulic Gear Pump 6PTF SAE C 2/4-Bolt Series

• Pump Family: Group 6 Heavy-Duty Cast Iron Single Gear Pump (6PTF).

• Displacement Range: 20.0 to 135.0 cm³/rev (14 displacement steps).

• Flange Standard: SAE C Combination 2/4-Bolt universal mount (Cover Code 14, Pilot Ø127.0 mm / 5.00").

• Drive Shaft: SAE 14T spline (Code 07.00), SAE 1-1/4" straight keyed (Code 04), or SAE 13T/15T splined options.

Comprehensive Interchangeability & Replacement Matrix

The HENGYUHANG 6PTF SAE C 2/4-Bolt series provides 1:1 drop-in replacement compatibility across the following 27 international hydraulic pump manufacturers and designated series:

• MARZOCCHI: GHP2A, ALP2A, GHP2, ALP2, 1PD, GHP3, ALP3, GHP3A, ALP3A series

• DANFOSS: SNP1NN, SNP3NN, SNW3NN, SNP2, SNW2 series

• HYDAC: PGE102, PGE103, PGE104 series

• ARGO-HYTOS: GP2, GP3, GP1 series

• ATOS: PFG series

• Brevini (Dana Brevini): OT100, OT200, OT300 series

• BUCHER Hydraulics: AP100, AP200, AP212, AP300 series

• BONDIOLI & PAVESI: HPLPA1, HPLPA2, HPLPA3 series

• Boden: BAP1, BHP1, BAP2, BHP2, BHP3, BAP3 series

• Caproni: 10A, 20A, 30A, 10C, 20C, 30C series

• CASAPPA: KP20, PHP20, Polaris 20, PLP30, KP30, KP35, HDP30, HDP35 series

• CONCENTRIC: WP300, WP900, WP1500 series

• DUPLOMATIC: 1P, GP2, GP3, GP1 series

• Galtech: 1SPA, 2SPA, 3GPG, 3SPA series

• GRH: 1PF, 2PF, 3PF series

• HANSA-TMP: 1SP, 2SP, 3GPG, 3SPA series

• HESPER: HA11, HA2, HA3, CHP1 series

• HONOR: 1KH series

• HPI: P1BAN1, P1BAN2, P1AAN2, P1BAN3, P1AAN3 series

• HYDRONIT: E series

• JIHOSTROJ: P23, J, T3, Q2, UD, QHD1, QHD2 series

• PARKER (Commercial Hydraulics / Parker): PGP511, PGP517, PGP620, PGP640 series

• Bosch Rexroth: AZPF, AZPG, AZPN, AZPT series

• RONZIO: 02ZAG, 02ZCG, 02ZLG, 03ZBG, 03ZAG series

• ROQUET: 1L0, PLA, GZ, G, GLA, PLC, PNA, PLJ, PLK, PLH, PLZ series

• SDH: CBN, CBT, CBF series

• VIVOLO (Vivoil): X1P, XV-1P, X2P, X3P, XV-2P, XV-3P series

Brand Replacement

The HENGYUHANG 6PTF SAE C 2/4-Bolt series is precision-engineered to serve as a reliable, direct replacement for major global brands including CASAPPA, Bosch Rexroth, Parker, Marzocchi, Danfoss, Jihostroj, and Bondioli & Pavesi. Every pump undergoes 100% factory dynamic testing across its full speed and pressure curve to guarantee volumetric efficiency, continuous pressure integrity up to 350 bar, and minimal internal bypass. Utilizing strict SAE-standard pilot centering (Ø127.0 mm / 5.00") and standardized 14-tooth involute splined shaft geometries, Hengyuhang pumps allow equipment builders and maintenance engineers to perform drop-in field retrofits without pipe rework, adapter plates, or system modifications. Custom displacement ratings, flanged or threaded ports, and specialized shaft extensions are fully supported with rapid turnaround.

Applications

• Heavy Mobile Construction & Earthmoving: Main hydraulic boom, bucket, and auxiliary implement circuits on crawler excavators, heavy wheel loaders, bulldozers, and trenchers.

• Mining & Heavy Drilling Machinery: Rotary drilling head drives, continuous miners, underground haul trucks, and hydraulic rock breaker power circuits.

• Heavy Material Handling & Port Machinery: Main mast hoisting, reach stacker boom elevation, and heavy rough-terrain mobile cranes.

• Forestry & Scrap Processing Equipment: Timber forwarders, log loaders, scrap metal shredders, hydraulic shearing machines, and high-tonnage metal balers.

• Industrial Hydraulic Power Units (HPUs): Central hydraulic power stations, hydraulic forging presses, high-capacity injection molding machines, and municipal compactor stations.

Package & Shipping

Why Choose Hengyuhang?

• Direct Factory Precision Manufacturing & CNC Excellence: Manufactured in our state-of-the-art production facility equipped with high-precision 4-axis and 5-axis CNC machining centers, automated gear hobbing, and CNC gear tooth profile grinding (Ra < 0.2 μm) to ensure superior surface finish, ultra-tight internal clearances, and maximum volumetric efficiency.

• 100% Full-Cycle Multi-Parameter Factory Inspection: Every single pump undergoes computerized testing before packaging, verifying flow rate at rated speed, volumetric efficiency (>94%), mechanical efficiency, continuous and peak pressure hold, internal bypass, and noise spectrum. Zero untested units leave the factory.

• Seamless 1:1 OEM Drop-In Interchangeability: Dimensionally matched to European, SAE, and DIN standards, providing 1:1 direct mechanical interchangeability across 27+ international brands (Casappa, Rexroth, Marzocchi, Parker, Danfoss, Jihostroj, etc.) with zero mounting modifications required.

• Flexible Engineering Customization & Rapid Prototyping: Supported by a senior fluid power engineering team, offering custom displacement combinations, specialized shaft tapers, splines, integrated priority or relief valves, and non-standard port orientations with rapid sample prototyping and low MOQ requirements.

• Robust Supply Chain, Extensive Inventory & Fast Global Dispatch: Extensive raw material stock of high-grade spheroidal graphite ductile iron castings, precision gear sets, and bearing assemblies enables rapid assembly and 48–72 hour dispatch for emergency breakdown replacements, supported by complete export logistics.

• 12-Month Comprehensive Warranty & Lifetime Technical Support: All pumps are backed by a comprehensive 12-month manufacturer warranty against defects in materials and workmanship, supplemented by 24/7 engineering consultation, CAD drawing verification, and lifecycle technical assistance.