Eaton Adu41/Adu49/Adu62 Series and Parker Pd18/Pd28/Pd45/Pd60/Pd75/Pd100/Pd140 Hydraulic Pump
China Eaton Adu41/Adu49/Adu62 Series and Parker Pd18/Pd28/Pd45/Pd60/Pd75/Pd100/Pd140 Hydraulic Pump, Find details about China High Pressure Pump, Plunger Pump from Eaton Adu41/Adu49/Adu62 Series and Parker Pd18/Pd28/Pd45/Pd60/Pd75/Pd100/Pd140 Hydraulic Pump
Product Details
Parker PD Series Piston Pumps
Technical Data
Table of values (theoretical values, without efficiency and tolerances; values rounded)
Hydraulic fluid
Before starting project planning, please refer to our data sheets RE 90220 (mineral oil), RE 90221 (environmentally acceptable hydraulic fluids) and RE 90223 (HF hydraulic fluids) for detailed information regarding the choice of hydraulic fluids and conditions of use. The A6VE variable displacement plug-in motor is not suitable for use with HFA. If HFB, HFC and HFD or environmentally acceptable hydraulic fluids are being used, the constraints regarding technical data and seals mentioned in RE 90221 and RE 90223 must be observed. If necessary, please contact us to discuss.
Viscosity range
We recommend that a viscosity (at operating temperature) for optimum efficiency and service life purposes of νopt = optimum viscosity 16 to 36 mm2/s be chosen, taken the circulation temperature (closed circuit) and reservoir temperature (open circuit) into account.
Limits of viscosity range. The following values apply in extreme cases:
νmin = 5 mm2/s
Short-term (t < 3 min) at max. permitted temperature of tmax = +115°C. νmax = 1600mm2/s.
Short-term (t < 3 min) with cold start (p < 30 bar, n ≤ 1000 rpm, tmin = -40°C).
Note that the maximum hydraulic fluid temperature must not be exceeded locally either (e.g. during storage). The temperature in the bearing area is - depending on pressure and speed - up to 12 k higher than the average case drain temperature.
Special measures are necessary at temperatures between -25°C and -40°C. Please contact us.
Shaft seal ring
The service life of the shaft seal ring is affected by the speed of the motor and the case drain pressure. The permitted loading with intermittent case drain pressure depends on the rotational speed (see chart). Short-term (t < 5 s) pressure spikes of up to 6 bar absolute are permitted.
The average permanent case drain pressure must not exceed 3 bar absolute. The pressure in the case must be equal to or greater than the external pressure on the shaft seal ring.
Flushing and Boost Pressure Valve
The flushing and boost pressure valve is used to remove heat from the closed circuit and to ensure that a minimum charge pressure is present (opening pressure 16 bar, fixed; note when setting primary valve). A side effect is flushing of the case.
Warm pressure fluid is removed from the relevant low pressure side into the motor case. This is then fed into the reservoir, together with the leakage fluid. The pressure fluid drawn out of the closed circuit in this way has to be replaced by cooled oil that is pumped in by the charge pump. In the open circuit, the flushing and boost pressure valve is used solely to flush the case from the return line.
The valve is fitted to the variable displacement motor (or integrated into the servo unit, depending on the type of control and the size).
More Details About Us
| customized service | 1.We can help buyers design specific products or produce products according to buyers'design 2.We can print logo according to buyers' requirement |
| our advantages | 1.We are one of the most complete hydraulic pump accessories manufacturers in the china, we have been engaged in hydraulic pump accessories for more than 10 years. 2.Our price is low, the delivery time is fast, the model is complete, because we are a factory. |
| Customer Service | 1.You may email us through the make in china messaging system if you have a question or would like to submit a comment. 2. Generally, email will be responded to within 24 hours; except on every Sunday and holidays. We will reply as soon as we back in office. 3. If you don't see what you are looking for, just send us an e-mail with picture/picture and we will be glad to help you. 4. Positive feedback is very important to us. |
| Packaging & Shipping Delivery Details | 1.We can choose different ways of transportation according to the needs of the customers, either by commercial express or by air and sea. 2.The delivery cycle of accessories is generally about one weeks,but we have many spare parts in stock , the delivery cycle of the pump is generally one to three weeks, depending on which model. |
| Questions you maybe inquiry | Q1:Could you custom products? A:We can manufacture it according to your drawings or samples. Q2: I want to buy your products, how can I pay? A :You can pay via T/T , WEST UNION or other payment terms we reach agreement. Q3: How can you guarantee the quality? A: One year's warranty against B/L date. If You meet with quality problem, we promise to responsible for it. Q4: If we don't find what we want on your website, what should we do? A: You can email us the descriptions and pictures of the products you need, We will check whether we can make it. Q5: Can we buy 1 pc of each item for quality testing? A: Yes, we understand quality test is important and we are glad to send 1pc for quality testing. Q6: What is the lead time? A: For this product, normally 3 days,3 days and lead time is calculated from the day we receive your deposit.
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