Product Description
Premium factory-direct HZ-M7F-3N1D (GOLD CUP 7 Series) Fixed Displacement Axial Piston Motor, precision-manufactured as a 100% drop-in, plug-and-play interchangeable replacement for OEM Parker Denison M7F-3N1D-00. Engineered to deliver maximum mechanical efficiency on heavy-duty mining rotary heads, high-torque marine winches, and massive continuous tunneling machinery.
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Complete Drop-In Interchangeability: Formulated strictly to original Parker Denison blueprint tolerances. Identical standard SAE-C 2-bolt / 4-bolt mounting patterns and heavy splined drive shafts ensure effortless on-site change-out with zero modifications.
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Bimetallic Sintered Cylinder Block: Features vacuum-sintered copper alloy fused onto high-tensile alloy steel block bores. This advanced friction-pair composition minimizes internal leakage and prevents metal-to-metal face scoring even under severe fluid thermal windows.
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High-Torsional Splined Input Shaft: Crafted from premium induction-hardened forged alloy steel ($60\text{–}62\text{ HRC}$), engineered specifically to withstand punishing startup torques and sudden load reversals common in rock drilling.
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Haozheng Model Code OEM Part Number Cross Ref. Technical Specifications (119.6 cc) HZ-M7F-3N1D-00 • Parker Denison: M7F 3N1D / M7F-3N1D-00
• Industry Standard: Gold Cup 7 Series Fixed Motor
• App Reference: Heavy Drill Heads & Winches• Displacement: 7.25 in³/rev (119.6 cm³/rev)
• Max. Continuous Pressure: 5000 PSI (345 bar)
• Max. Speed: 2800 RPM
• Shaft: Standard SAE-C Rigid Spline
• Rotation: Bi-Directional
| MODEL | flow(m³/s) | Displacement(ml/r) | Torque | Rated pressure(Pa) | Speed(n/ r/min) |
| M7F3N1D | 216 | 119 | 1.9 | 345 | 3000 |
| M6F3N1D00 | 178 | 98 | 1.6 | 345 | 3000 |
| M6G3N1D02 | 200 | 98 | 1.6 | 345 | 3000 |
| M6G3N1D30 | 200 | 98 | 1.6 | 345 | 2900 |
| M6G3N1D-M2-06395 | 200 | 100 | 1.6 | 350 | 3000 |
Haozheng Hydraulic Production Processing Diagram
Haozheng Hydraulic Honorary Certificate
Exhibition
FAQ
Q1: The Gold Cup 7 series is often subjected to continuous bi-directional reversals under full load on heavy winches. How does your HZ-M7F-3N1D prevent shoe-lifting and mechanical play?
A: Bi-directional reversals under high pressure create massive inertia and vacuum shocks, which can easily tear the piston shoes from standard aftermarket motors. At Guangdong Haozheng, our HZ-M7F-3N1D piston assemblies undergo digital tonnage crimping to swage the bronze shoes onto the induction-hardened piston heads. Combined with our strict clearance tolerances ($<0.003\text{ mm}$), this design maintains a perfect hydrostatic oil film, completely eliminating shoe-play and structural seizure during aggressive directional shifts.
Q2: Does your HZ-M7F motor support the same continuous 5,000 PSI operating limits without case-pressure build-up or shaft seal leakage?
A: Yes, 100%. Excessive case pressure and seal blowout in aftermarket motors are caused by internal oil slip-back through poorly-ground bimetallic faces. Our HZ-M7F cylinder blocks are vacuum-sintered and micro-lapped on precision CNC spherical grinding lines. This secure face sealing keeps internal bypass flow to a minimum, ensuring low case pressure and protecting the premium high-pressure shaft seals from blowing out.
