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1、Bulletin 47025 E PVK OPEN LOOP PUMPS 5204002 Bulletin 47025 E 6 3 26 04 1 30 PM Page 2 Table of Contents Performance Assurancepage3 Features and Benefitspage4 5 Specificationspage6 Pump Controlspage7 Curves Performancepage8 Soundpage9 Inlet Suction Superchargepage10 How To Orderpage11 Copyright 2004
2、 The Oilgear Company All Rights Reserved Table of Contents 2 5204002 Bulletin 47025 E 6 3 26 04 1 30 PM Page 3 EveryOilgear product is shipped to you with our Performance Assurance a corporate commitment to stay with your installation until our equipment performs as specified Hydraulic equipment and
3、 systems have been Oilgear s primary business since 1921 For decades we have developed hydraulic techniques to meet the unique needs and unusual fluid power problems of machinery builders and users worldwide matching fluid power systems to a tremendous range of applications and industries Our exclus
4、ive Performance Assurance program is built upon that strong foundation PERFORMANCE ASSURANCE STANDARD WITH EVERY OILGEAR PUMP As a customer you also benefit from access to Oilgear s impressive technical support network You ll find factory trained and field experienced application engineers on staff
5、at every Oilgear facility They are backed by headquarters staff who can access the records and knowledge learned from decades of solving the most difficult hydraulic challenges When your design or purchase is complete our service is just beginning If you ever need us our Oilgear engineers will be th
6、ere ready to help you with the education field service parts and repairs to assure that your installation runs smoothly and keeps right on running Performance Assurance 3 5204002 Bulletin 47025 E 6 3 26 04 1 30 PM Page 4 Control interchangeability Facilitates changes from stock on the machine in the
7、 field Optional minimum volume stop Quiet valve plate design Minimizes noise at typical electric motor speeds Thru shaft availability 100 thru shaft capability PVK 140 only PVK 270 370 is 50 Enables multiple pump installation from a single shaft Permits pump to drive auxiliary devices Hardened cylin
8、der surface running on hardened valve plate hard on hard Provides greater resistance to contamination Facilitates long life Allows operation with low viscosity or other special fluids PVK Open Loop Pumps Steel shoes running on hardened swashblock surface Facilitates a higher degree of contaminate re
9、sistance Permits higher pressure operation with long life Allows operation with low viscosity or other special fluids Features and Benefits 1 4 5 6 8 4 Cylinder mounted polymerous journal bearings Enables operation with low viscosity or other special fluids Provides infinite bearing life Permits com
10、pact design 2 7 5204002 Bulletin 47025 E 6 3 26 04 1 30 PM Page 5 Maximum volume stop standard Sealed front shaft bearings Allows operation with low viscosity or other special fluids Permits side loading SAE keyed or SAE splined shaft Features and Benefits 12 5 Swashblock and saddle with special pol
11、ymerous bearings Allows running on low viscosity or other special fluids Permits consistent control reaction Eliminates troublesome yoke bearings Provides long life 3 9 10 11 Patented pressure lubricated swashblock design Provides high performance for high pressure cycling operation 5204002 Bulletin
12、 47025 E 6 3 26 04 1 30 PM Page 6 Specifications 6 SPECIFICATIONS NOMINAL DIMENSIONS UNIT SIZELENGTHWIDTHHEIGHTWEIGHTFACE MOUNTING in mm in mm in mm lbs kg FLANGE 14014 81376 28 25209 610 78273 820091SAE D 4 Bolt 270 37021 25539 811 75298 515 69398 5550250SAE F 4 Bolt THEORETICALRATEDMAXIMUM MAXIMUM
13、CONTINUOUSPRESSUREMAXIMUM DISPLACEMENTPRESSURE10 of duty cycleRATED SPEED UNIT SIZEin3 revml revpsibarpsibarrpmgpml minhpkw 1408 6114150003455800400180063 0238 7207 2154 6 27016 3267500034558004001500100 0379 0326 9244 0 37022 4367350024141002831500135 1512 0 324 5242 2 Higher operating speeds may b
14、e approved Consult the Oilgear application engineering department NOMINAL PERFORMANCE SPECIFICATIONS POWER INPUT at rated cont pressure max rated rpm FLOW RATE at max rated rpm rated cont pressure 14 7 psia 1barabs inlet conditions ShaftLeft HandRight Hand Rotation CCW CW Port A left sidePressureSuc
15、tion facing shaft Port B right sideSuctionPressure facing shaft PORT CONFIGURATION Port B H W L 5204002 Bulletin 47025 E 6 3 26 04 1 30 PM Page 7 Controls 7 S P Pressure Proportional Displacement Control The control is designed with a spring feedback so that the pump will go to a stroke setting in r
16、esponse to a separate pressure signal A pressure unloading option is available E PUMP CONTROLS MECHANICAL Electronic Servo Control A precision servo control designed to minimize hysteresis is available with several electro hydraulic servo valve sizes to provide slow or very fast response rates V Basic Pressure Compensating Control The use of a four way valve spool in the signal circuit allows this Oilgear Control to be adjusted to lower minimum operating pressures than other manufacturers The Co
