Danfoss 255290A1310AAAA Hydraulic Pump ‌High Efficiency New Original

Product Specification

Product Description:

‌1. Core Advantages and Features‌

‌High efficiency and energy saving‌

The volumetric efficiency is as high as 92%-95%, far exceeding ordinary centrifugal pumps (69%-76%), energy consumption is reduced by more than 23%, and operating costs are significantly reduced ‌‌.

The integrated electro-hydraulic servo system accurately controls the flow direction, has high power density, and supports multiple control modes such as electric proportion and mechanical displacement ‌‌.

‌High pressure and corrosion resistance‌

The rated pressure is up to 4000 bar (water cutting application), made of stainless steel or special corrosion-resistant materials, suitable for harsh environments such as seawater desalination and chemical media (acid/alkali/solvent) ‌‌.

The PAH series achieves "oil-free lubrication" and only uses water as a lubricant to eliminate the risk of oil contamination ‌‌.

‌Reliable and compact structure‌

The modular design has few parts (such as no T-bar on the swash plate) and a small size, which is suitable for space-constrained scenarios (such as ship steering gear and construction machinery) ‌‌. The service life exceeds 10 years, the maintenance cycle reaches 5000-8000 hours, and the failure rate is extremely low after 30,000 hours of operation.

‌Intelligence and flexibility ‌

Digital Displacement® technology uses a high-speed solenoid valve to control the plunger cavity in real time, adapting to diesel/electric hybrid machinery ‌.

The flow adjustment range is wide (0-300 L/min), and the pressure-independent design ensures efficient operation under all working conditions ‌ .

2. Key usage precautions ‌

‌Hydraulic oil cleanliness management ‌

The oil NAS cleanliness level is required to reach level 7-8, and the contaminant particles are ≤10μm, otherwise it will cause abnormal wear of the plunger pair ‌ .

Replace the filter regularly to avoid oil deterioration causing pump blockage or increased noise ‌ .

‌Installation and operation specifications ‌

During installation, ensure that the foundation is flat, and the concentricity deviation between the motor shaft and the pump shaft is ≤0.1mm to prevent vibration from damaging the seal ‌ .

Before starting, check the oil level to the center line of the oil mirror. A safety valve must be configured when operating at overpressure (e.g., the maximum pressure of the MPV series is 48MPa).

‌Maintenance points‌
‌Regular monitoring‌: Use the "listen, touch, see, smell" method to diagnose abnormal noise, temperature rise or vibration, and use the hydraulic test bench to detect no-load flow attenuation.

‌Replacement of key components‌: Check the plunger seal and valve group (such as rubber ring, return valve) every 5000 hours to avoid insufficient flow due to aging.

‌Shutdown operation‌: After turning off the spray gun and other loads, the pressure must be released to prevent the pump from damaging the pressure regulating valve.

FAQ

Q1: Wonder if you accept small orders?
A1: Do not worry. Feel free to contact us .in order to get more orders and give our clients more convener ,we accept small order.

Q2: Can you send products to my country?
A2: Sure, we can. If you do not have your own ship forwarder, we can help you.

Q3: What's your payment terms ?
A3: By T/T,LC AT SIGHT,100% full payment.

Q4: How long is your production lead time?
A4:It depends on product and order qty. Normally, it takes us 15 days for an order with MOQ qty.

Q5: When can I get the quotation ?
A5: We usually quote you within 24 hours after we get your inquiry. If you are very urgent to get the quotation.Please call us or tell us in your mail, so that we could regard your inquiry priority.