Oilgear Designers Handbook

Bulletin 90050-C

Fluid Power Reference Handbook

DISCLAIMER

The publisher of this handbook obtained the information and calculations within from a widevariety of public and private sources. The publisher disclaims any warranty, express orimplied, for any information or calculation contained in the publication, and furtherdisclaims any liability for damage or loss, including consequential damages, as a result of theuse of any information provided within this publication. Whenever the reader intends to useany information or calculation contained in this publication, the reader should independentlyverify that information or calculation and whether or not it is suitable for the reader’sintended purpose.

The publisher does not endorse or recommend, expressly or implicitly, any brand nameproduct by including such brand name products in this publication. Conversely, thepublisher does not disprove, expressly or implicitly, any brand name product by notincluding such brand name products in this publication.

EDITOR’S NOTE

Oilgear would like to thank Hydraulic and Pneumatics Magazine, the National Fluid PowerAssociation (NFPA), the Society of Automotive Engineers (SAE), the American Society ofMechanical Engineers (ASME), the National Electric Manufacturers Association (NEMA), and theInternational Organization for Standardization (ISO) for their assistance in making this publicationpossible.

Oilgear Fluid Power Reference Handbookii

Table of Contents

Section 1Conversion Factors .......................................................................................... 1Abbreviations, Prefixes and Letter Symbols ..................................................... 6Metric Units ...................................................................................................... 7Fluid Power Formulas ...................................................................................... 8Vehicle Drive Formulas .................................................................................. 10CV Calculations .............................................................................................. 12Orifice Calculations & Pressure Drops ........................................................... 13Cylinder Push/Pull Forces ............................................................................... 17Cylinder Speeds ............................................................................................. 18Fluid Motor Torque .......................................................................................... 19RAM Capacities ............................................................................................. 21Pressure Losses in Piping .............................................................................. 22Nominal Working Pressures ............................................................................ 30O-Ring Material Specifications ........................................................................ 34Seals and Seal Compatibility ......................................................................... 44Accumulator Formulas ................................................................................... 45Viscosity Conversions & Calculations ............................................................ 50Fastener Torques ........................................................................................... 52Water Hammer ............................................................................................... 55

Section 2Reservoir Design ............................................................................................ 56Noise Abatement ............................................................................................. 57Fluid Conditioning .......................................................................................... 60Heat Transfer ................................................................................................. 68Pipe Bending .................................................................................................. 69Pump Inlet Conditions ..................................................................................... 70Accumulator Theory and Solutions ................................................................ 71

Section 3Flange Ports ................................................................................................... 72Valve/Mounting/Surface Dimensions .............................................................. 80Pump/Mounting/Drive Dimensions ............................................................... 104Selection and Application of Induction Motors ............................................. 109NEMA Electric Motor Standards .................................................................. 110Electric Motor Horsepower ........................................................................... 118ANSI Standards for Stationary Equipment ................................................... 119Graphic Symbols and Circuit Diagrams ........................................................ 140

AppendixAccumulators ................................................................................................ A-1Reservoirs ..................................................................................................... A-7Hydraulic Fluids ........................................................................................... A-11Hydraulic Contamination ............................................................................. A-18Hydraulic Filtration ...................................................................................... A-23Heat Exchangers ......................................................................................... A-35Fittings ......................................................................................................... A-39Hydraulic Hose ............................................................................................ A-42Hose Installation .......................................................................................... A-47Seals and Sealing Technology .................................................................... A-50Glossary of Standard Terms and Words ..................................................... A-59

Oilgear Fluid Power Reference Handbook iii

Oilgear Fluid Power Designers' Handbook

THIS PAGE INTENTIONALLY LEFT BLANK

iv

Oilgear Fluid Power Reference Handbook 1

Oilgear Fluid Power Reference Handbook2

Oilgear Fluid Power Reference Handbook 3

Oilgear Fluid Power Reference Handbook4

Oilgear Fluid Power Reference Handbook 5

Oilgear Fluid Power Reference Handbook6

Oilgear Fluid Power Reference Handbook8

Oilgear Fluid Power Reference Handbook 9

Oilgear Fluid Power Reference Handbook10

Oilgear Fluid Power Reference Handbook 11

Oilgear Fluid Power Reference Handbook12

Oilgear Fluid Power Reference Handbook 13

Oilgear Fluid Power Reference Handbook14

Oilgear Fluid Power Reference Handbook 15

Oilgear Fluid Power Reference Handbook16

Oilgear Fluid Power Reference Handbook 17

Oilgear Fluid Power Reference Handbook18

Oilgear Fluid Power Reference Handbook 19

Oilgear Fluid Power Reference Handbook20

Oilgear Fluid Power Reference Handbook 21

Oilgear Fluid Power Reference Handbook22

Oilgear Fluid Power Reference Handbook 23

Oilgear Fluid Power Reference Handbook24

Oilgear Fluid Power Reference Handbook 25

Oilgear Fluid Power Reference Handbook26

Oilgear Fluid Power Reference Handbook 27

Oilgear Fluid Power Reference Handbook28

Oilgear Fluid Power Reference Handbook 29

Oilgear Fluid Power Reference Handbook30

Oilgear Fluid Power Reference Handbook 31

Oilgear Fluid Power Reference Handbook32

Oilgear Fluid Power Reference Handbook 33

Oilgear Fluid Power Reference Handbook34

Oilgear Fluid Power Reference Handbook 35

Oilgear Fluid Power Reference Handbook36

Oilgear Fluid Power Reference Handbook 37

Oilgear Fluid Power Reference Handbook38

Oilgear Fluid Power Reference Handbook 39

Oilgear Fluid Power Reference Handbook40

Oilgear Fluid Power Reference Handbook 41

Oilgear Fluid Power Reference Handbook42

Oilgear Fluid Power Reference Handbook 43

Oilgear Fluid Power Reference Handbook44

Oilgear Fluid Power Reference Handbook 45

Oilgear Fluid Power Reference Handbook46

Oilgear Fluid Power Reference Handbook 47

Oilgear Fluid Power Reference Handbook48

Oilgear Fluid Power Reference Handbook 49

Oilgear Fluid Power Reference Handbook50

Oilgear Fluid Power Reference Handbook 51

Oilgear Fluid Power Reference Handbook52

Oilgear Fluid Power Reference Handbook 53

Oilgear Fluid Power Reference Handbook54

Oilgear Fluid Power Reference Handbook 55

Oilgear Fluid Power Reference Handbook56

Oilgear Fluid Power Reference Handbook 57

Oilgear Fluid Power Reference Handbook58

Oilgear Fluid Power Reference Handbook 59

Oilgear Fluid Power Reference Handbook60

Oilgear Fluid Power Reference Handbook 61

Oilgear Fluid Power Reference Handbook62

Oilgear Fluid Power Reference Handbook 63

Oilgear Fluid Power Reference Handbook64

Oilgear Fluid Power Reference Handbook 65

Oilgear Fluid Power Reference Handbook66

Oilgear Fluid Power Reference Handbook 67

Oilgear Fluid Power Reference Handbook68

Oilgear Fluid Power Reference Handbook 69

Oilgear Fluid Power Reference Handbook70

Oilgear Fluid Power Reference Handbook 71

Oilgear Fluid Power Reference Handbook72

Oilgear Fluid Power Reference Handbook 73

Oilgear Fluid Power Reference Handbook74

Oilgear Fluid Power Reference Handbook 75

Oilgear Fluid Power Reference Handbook76

Oilgear Fluid Power Reference Handbook 77

Oilgear Fluid Power Reference Handbook78

Oilgear Fluid Power Reference Handbook 79

UNITS

Dimensions are given in millimeters.Inch dimensions shown below the millimeter conform to ISO 4412-1.

LETTER SYMBOLS

For the purpose of this standard, the following symbols apply:

a) A, B, P, T, L, V, X and Y identify ports in accordance with ISO 9461;b) F

1, F

2, F

3, F

4, F

5 and F

6 identify threaded holes for mounting fasteners; and

c) G1, and G

2 identify location pin holes.

MOUNTING SURFACE IDENTIFICATION CODING

The following prefixes relate to the mounting surface valve type:

C = is the non-return (check) valveD = is the directional control valveFB = is the cam-actuated two-stage compensated flow control valveF, 2F, 3F = are the compensated flow control valvesP = is the pressure control valve (other than the relief valve),

sequence valve, throttle valve and non-return (check) valve.POC = is the pilot operated valvesR, RP, RV= are the pressure relief valves

TOLERANCES

The following tolerances shall apply, unless otherwise specified in table.

Surface roughness (RT)

NOTE: See ISO 4287 and ISO 4288 for further surface roughness tolerances.

Surface Flatness:0.01 mm over a distance of 100 mm(.0004 inch over a distance of 4inches)

NOTE: See ANSI/Y14.5M for furthersurface flatness tolerances

Hydraulic Fluid Power Valves - Mounting SurfacesNFPA/T3.5.1 R2-2002

Oilgear Fluid Power Reference Handbook80

Oilgear Fluid Power Reference Handbook 81

Holes and Tolerances on p. 81

and Tolerances

th m

or

Oilgear Fluid Power Reference Handbook102

Oilgear Fluid Power Reference Handbook 103

Oilgear Fluid Power Reference Handbook104

Oilgear Fluid Power Reference Handbook 105

Oilgear Fluid Power Reference Handbook106

Oilgear Fluid Power Reference Handbook 107

Oilgear Fluid Power Reference Handbook108

Oilgear Fluid Power Reference Handbook 109

Oilgear Fluid Power Reference Handbook110

Oilgear Fluid Power Reference Handbook 111

Oilgear Fluid Power Reference Handbook112

Oilgear Fluid Power Reference Handbook 113

Oilgear Fluid Power Reference Handbook114

Oilgear Fluid Power Reference Handbook 115

Oilgear Fluid Power Reference Handbook116

Oilgear Fluid Power Reference Handbook 117

Oilgear Fluid Power Reference Handbook118

Oilgear Fluid Power Reference Handbook 119

Oilgear Fluid Power Reference Handbook120

Oilgear Fluid Power Reference Handbook 121

Oilgear Fluid Power Reference Handbook122

Oilgear Fluid Power Reference Handbook 123

Oilgear Fluid Power Reference Handbook124

Oilgear Fluid Power Reference Handbook 125

Oilgear Fluid Power Reference Handbook126

Oilgear Fluid Power Reference Handbook 127

Oilgear Fluid Power Reference Handbook128

Oilgear Fluid Power Reference Handbook 129

Oilgear Fluid Power Reference Handbook130

Oilgear Fluid Power Reference Handbook 131

Oilgear Fluid Power Reference Handbook132

Oilgear Fluid Power Reference Handbook 133

Oilgear Fluid Power Reference Handbook134

Oilgear Fluid Power Reference Handbook 135

Oilgear Fluid Power Reference Handbook136

Oilgear Fluid Power Reference Handbook 137

Oilgear Fluid Power Reference Handbook138

Oilgear Fluid Power Reference Handbook 139

Oilgear Fluid Power Reference Handbook140

Oilgear Fluid Power Reference Handbook 141

Oilgear Fluid Power Reference Handbook142

Oilgear Fluid Power Reference Handbook 143

Oilgear Fluid Power Reference Handbook144

Oilgear Fluid Power Reference Handbook 145

Oilgear Fluid Power Reference Handbook146

Oilgear Fluid Power Reference Handbook 147

Oilgear Fluid Power Reference Handbook148

Oilgear Fluid Power Reference Handbook 149

Oilgear Fluid Power Reference Handbook150

Oilgear Fluid Power Reference Handbook 151

Oilgear Fluid Power Reference Handbook152

Oilgear Fluid Power Reference Handbook 153

Oilgear Fluid Power Reference Handbook154

Oilgear Fluid Power Reference Handbook 155

Oilgear Fluid Power Reference Handbook156

Oilgear Fluid Power Reference Handbook 157

Oilgear Fluid Power Reference Handbook158

Oilgear Fluid Power Reference Handbook 159

Oilgear Fluid Power Reference Handbook160

Oilgear Fluid Power Reference Handbook 161

Oilgear Fluid Power Reference Handbook162

Oilgear Fluid Power Reference Handbook 163

Oilgear Fluid Power Reference Handbook164

Oilgear Fluid Power Reference Handbook 165

Oilgear Fluid Power Reference Handbook166

Oilgear Fluid Power Reference Handbook 167

Oilgear Fluid Power Reference Handbook168

Oilgear Fluid Power Reference Handbook 169

Oilgear Fluid Power Reference Handbook170

Oilgear Fluid Power Reference Handbook 171

Oilgear Fluid Power Designers' Handbook

THIS PAGE INTENTIONALLY LEFT BLANK

172

Oilgear Fluid Power Reference Handbook Appendix-1

Oilgear Fluid Power Reference HandbookAppendix-2

Oilgear Fluid Power Reference Handbook Appendix-3

Oilgear Fluid Power Reference HandbookAppendix-4

Oilgear Fluid Power Reference Handbook Appendix-5

Oilgear Fluid Power Reference HandbookAppendix-6

Oilgear Fluid Power Reference Handbook Appendix-7

Oilgear Fluid Power Reference HandbookAppendix-8

Oilgear Fluid Power Reference Handbook Appendix-9

Oilgear Fluid Power Reference HandbookAppendix-10

Oilgear Fluid Power Reference Handbook Appendix-11

Oilgear Fluid Power Reference HandbookAppendix-12

Oilgear Fluid Power Reference Handbook Appendix-13

Oilgear Fluid Power Reference HandbookAppendix-14

Oilgear Fluid Power Reference Handbook Appendix-15

Oilgear Fluid Power Reference HandbookAppendix-16

Oilgear Fluid Power Reference Handbook Appendix-17

Oilgear Fluid Power Reference HandbookAppendix-18

Oilgear Fluid Power Reference Handbook Appendix-19

Oilgear Fluid Power Reference HandbookAppendix-20

Oilgear Fluid Power Reference Handbook Appendix-21

Oilgear Fluid Power Reference HandbookAppendix-22

Oilgear Fluid Power Reference Handbook Appendix-23

Oilgear Fluid Power Reference HandbookAppendix-24

Oilgear Fluid Power Reference Handbook Appendix-25

Oilgear Fluid Power Reference HandbookAppendix-26

Oilgear Fluid Power Reference Handbook Appendix-27

Oilgear Fluid Power Reference HandbookAppendix-28

Oilgear Fluid Power Reference Handbook Appendix-29

Oilgear Fluid Power Reference HandbookAppendix-30

Oilgear Fluid Power Reference Handbook Appendix-31

Oilgear Fluid Power Reference HandbookAppendix-32

Oilgear Fluid Power Reference Handbook Appendix-33

Oilgear Fluid Power Reference HandbookAppendix-34

Oilgear Fluid Power Reference Handbook Appendix-35

Oilgear Fluid Power Reference HandbookAppendix-36

Oilgear Fluid Power Reference Handbook Appendix-37

Oilgear Fluid Power Reference HandbookAppendix-38

Oilgear Fluid Power Reference Handbook Appendix-39

Oilgear Fluid Power Reference HandbookAppendix-40

Oilgear Fluid Power Reference Handbook Appendix-41

Oilgear Fluid Power Reference HandbookAppendix-42

Oilgear Fluid Power Reference Handbook Appendix-43

Oilgear Fluid Power Reference HandbookAppendix-44

Oilgear Fluid Power Reference Handbook Appendix-45

THIS PAGE INTENTIONALLY LEFT BLANK

Oilgear Fluid Power Reference HandbookAppendix-46

Oilgear Fluid Power Reference Handbook Appendix-47

Oilgear Fluid Power Reference HandbookAppendix-48

Oilgear Fluid Power Reference Handbook Appendix-49

Oilgear Fluid Power Reference HandbookAppendix-50

Oilgear Fluid Power Reference Handbook Appendix-51

Oilgear Fluid Power Reference HandbookAppendix-52

Oilgear Fluid Power Reference Handbook Appendix-53

Oilgear Fluid Power Reference HandbookAppendix-54

Oilgear Fluid Power Reference Handbook Appendix-55

Oilgear Fluid Power Reference HandbookAppendix-56

Oilgear Fluid Power Reference Handbook Appendix-57

Oilgear Fluid Power Reference HandbookAppendix-58

Oilgear Fluid Power Reference Handbook Appendix-59

Oilgear Fluid Power Reference HandbookAppendix-60

Oilgear Fluid Power Reference Handbook Appendix-61

Oilgear Fluid Power Reference HandbookAppendix-62

Oilgear Fluid Power Reference Handbook Appendix-63

Oilgear Fluid Power Reference HandbookAppendix-64

Oilgear Fluid Power Reference Handbook Appendix-65

Oilgear Fluid Power Reference HandbookAppendix-66

Oilgear Fluid Power Reference Handbook Appendix-67

Oilgear Fluid Power Reference HandbookAppendix-68

Oilgear Fluid Power Reference Handbook Appendix-69

THIS PAGE INTENTIONALLY LEFT BLANK

Oilgear Fluid Power Reference HandbookAppendix-70

AUSTRALIAOilgear Towler Australia Pty. Ltd.

BRAZILOilgeardo Brazil Hydraulica Ltd.

CANADAThe Oilgear Company

FRANCEOilgear Towler S.A.

GERMANYOilgear Towler GmbH

INDIAOilgear Towler Polyhydron Pvt. Ltd.Towler Automation Pvt. Ltd.

ITALYOilgear Towler S.r.l.

JAPANThe Oilgear Japan Company

KOREAOilgear Towler Korea Co. Ltd.

MEXICOOilgear Mexicana S.A. de C.V.

SPAINOilgear Towler S.A.

TAIWANOilgear Towler Taiwan Co. Ltd.

UNITED KINGDOMOilgear Towler Ltd.

UNITED STATES OF AMERICAThe Oilgear Company

World HeadquartersThe Oilgear Company2300 South 51st Street Milwaukee, WI USA 53219phone: 414/327-1700 fax: 414/327-0532

www.oilgear.com

For more information about your application or the productsin this brochure, please contact your nearest Oilgear facility.

Bulletin 90050-CIssued February 2005Printed in USA