PVM Series Marine Hydraulic Pump Vickers Axial Piston Pump For Vessel Equipment

Wuhan Xinlaifu Hydraulic Equipment Co., Ltd. is one of the leading manufacturers and suppliers of pvm series marine hydraulic pump vickers axial piston pump for vessel equipment in China. With abundant experience, we warmly welcome you to buy high quality customized products at competitive price from our factory. Also, OEM&ODM service is available.

Type	PVM Series Specification
Brand	XLF Hydraulic
Displacement	10–141 cm³/r (PVM010 to PVM141)
Rated Working Pressure	230–280 bar (PVM141: 230 bar; All others: 280 bar)
Intermittent Peak Pressure	280–350 bar (PVM141: 280 bar; All others: 350 bar)
Mount Flange	Standard SAE-B mounting flange
Port Size	SAE standard flange ports (varies by displacement)
Built-in Parts	Integrated charge pump, swash plate assembly, control elements, high-pressure seals
Recommended Oil	Anti-wear hydraulic oil (ISO VG 32/46/68, SAE 10W recommended)

For a marine engineer, the environment inside a vessel's engine room is far less forgiving than a standard industrial workshop. Constant heat soak, low-frequency vibration from the main engine, and sudden shock loads from mooring winches put hydraulic pumps under extreme stress.

This aftermarket axial piston pump, dimensionally interchangeable with Danfoss Vickers PVM Series units, was not designed merely to match mounting footprints. Our engineering focus was placed on dynamic oil film retention across the cylinder block and valve plate under sustained high-pressure operation.

Built on the proven swashplate principle, it delivers infinitely variable displacement control. However, the critical upgrade lies in its transient response: during peak load conditions (e.g., anchoring in rough seas), it withstands intermittent spikes up to 350 bar against a rated pressure of 280 bar, ensuring flow output does not lag behind sudden pressure surges. Bench tests consistently record volumetric efficiency above 92%, which translates directly into reduced engine RPM requirements and lower thermal load on your cooling system.

• 2.1 Housing Acoustics: Designed for Enclosed Engine Rooms
  Instead of generic "low-noise" claims, we optimized the three-piece cast housing with an integrated labyrinth oil-seal channel to address specific frequency peaks. Under heavy winch starting torque, the housing structure shifts high-frequency whine into lower, less penetrating frequencies, significantly improving working conditions near the accommodation areas without adding bulky external soundproofing.

  2.2 Drive Shaft & Radial Load Management
  Available with SAE-standard heavy-duty spline shafts (13-tooth / 15-tooth) or conventional straight-key options.

  Critical Installation Note: While the high-load bearings offer improved radial load resistance, we strongly recommend a flexible coupling if your drive train involves belt pulleys or gear reducers. Misalignment exceeding 0.05mm under rigid coupling still risks premature wear. We provide a laser alignment reference card with each shipment to guide on-site fitting.

  2.3 Modular Mounting for HPU Upgrades
  The pump features a standard SAE-B mounting flange with flexible port orientation-both side-mounted and end-mounted SAE flange/threaded ports are offered.

  Why does this matter? Most competitors lock you into side ports, forcing expensive re-piping. By offering end-mounted options, we specifically support compact electrified hydraulic power unit (HPU) retrofits. In most cases, a direct swap takes under 2 man-hours without redesigning your tank cover plate.

  2.4 Corrosion Protection for Salt-Spray Conditions
  Surface treatment uses a zinc-nickel alloy base layer followed by a high-adhesion topcoat, passing 720 hours of Neutral Salt Spray (NSS) testing. More importantly, we repositioned the sealing groove geometry to sit higher on the housing body-preventing condensate and salt moisture from pooling against the main shaft seal lip, a common but overlooked failure point on older castings.

Q1: How does your heat treatment process compare to original Vickers specifications?
We do not cut corners on metallurgy. The cylinder block and valve plate friction pair utilize the same dual-metal copper alloy sintering process as OEM standards. Each production batch undergoes a 20,000-cycle pressure impact endurance test. Upon request, we supply the spectrometric material analysis certificate alongside the dynamic pressure curve, not just a static pass/fail report.

Q2: My old unit is a discontinued PVM045. Will a PVM050 fit without overloading my system?
This is a common trap. Simply using a 050 will disrupt your throttle valve pressure balance due to the higher displacement. Our solution: we physically adjust the swashplate maximum angle limiter to cap the flow rate strictly at the original 045 nominal output, while retaining the stronger bearing housing of the 050. We execute this modification at the quoting stage, so you receive a plug-and-play unit, not an oversized misfit.

Q3: Can I add Load Sensing (LS) capability to an old open-loop system without changing my main valve block?
Yes-and without costly block re-machining. We offer a bolt-on LS control cover that directly replaces your existing pressure compensator cap. This allows you to upgrade a fixed-displacement system into an energy-saving variable system with minimal downtime-particularly useful for vessels undergoing EEXI (Energy Efficiency Existing Ship Index) compliance modifications.

Q4: What if the pump runs hot immediately after installation?
We ask our sales team to verify your tank volume and cooler capacity before shipping. If field overheating occurs, our first remote diagnostic request is always the case drain backpressure value. In over 80% of hot-run cases, backpressure exceeds 2.5 bar. We will guide you to reroute the drain line directly to the tank (below oil level) rather than returning it through the return filter-solving the issue without returning the pump.

Q5: What about lead times for modified configurations?
For standard modules (PVM010 to 063), we maintain semi-finished housings in our Shanghai warehouse. If you require tandem pump adapters or reverse rotation (CCW), custom assembly takes just 3 working days-crucial for emergency repair projects with tight dry-dock schedules.

1. Main Performance Parameters

1.1 Industrial Version (Type E, Rated Speed: 1800 rpm)

1.2 High-Speed Version (Type M/ML/MR, for Marine & Mobile Equipment)

1.3 Pressure Compressor Setting Ranges

70 bar (Code 070): Adjustable range 40 ~ 130 bar, for light-duty low-pressure applications

230 bar (Code 230): Adjustable range 140 ~ 315 bar, for general medium-pressure applications

315 bar (Code 315): Adjustable range 140 ~ 315 bar, for heavy-duty high-pressure (Marine & Heavy Industry)

1.4 Shaft & Flange Specifications

Straight key shaft (Code 01/02/05/06): Direct drive for standard motors, Max torque: 58 ~ 337 Nm

Spline shaft (Code 03/04/07/08): Anti-shock design for marine & mobile equipment, Max torque: 58 ~ 1215 Nm

Flange: Multi-grade SAE A/B/C flanges; Two port layouts (Side port / End port) for flexible piping

2. Additional Features

Shaft Seal: Standard high-pressure shaft seal for long service life; Dual shaft seal optional for harsh environment (humid, dusty)

Load Sensing Control (Code B/C): Energy-saving design, output flow on demand to reduce system heat generation

Custom Suffix (-AV00/-BD00/-AS etc.): Custom paint, special seals and factory options, no change to core performance

Application Recommendation:

PVM010/PVM018: Small industrial machinery

PVM045~PVM098: General-purpose main models

PVM131/PVM141: Large marine equipment & heavy production lines

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