Table Of Contents - Sauer Danfoss 40 Series Technical Information

Axial piston pumps

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Table Of Contents

Table of Contents

Series 40 Axial Piston Pumps

Technical Information

Contents

Series 40 family of pumps and motors................................................................................................... 6

Key features...................................................................................................................................................... 7

M25 variable pump........................................................................................................................................ 8

M35 variable pump (M44 similar)............................................................................................................. 8

M46 variable pump........................................................................................................................................ 8

System circuit diagram................................................................................................................................. 9

M46 Pump schematic diagram ................................................................................................................. 9

Overview .........................................................................................................................................................10

General.............................................................................................................................................................10

Features ...........................................................................................................................................................10

Specifications.................................................................................................................................................10

Operating parameters ................................................................................................................................11

Fluid specifications ......................................................................................................................................11

Performance...................................................................................................................................................12

Fluids.................................................................................................................................................................13

Viscosity...........................................................................................................................................................13

Temperature...................................................................................................................................................13

Charge pressure............................................................................................................................................13

Case pressure.................................................................................................................................................13

Pressure ratings.............................................................................................................................................14

Speed ratings.................................................................................................................................................14

Inlet pressure .................................................................................................................................................15

Theoretical output .......................................................................................................................................15

Sizing equations ...........................................................................................................................................16

Filtration...........................................................................................................................................................17

Suction filtration......................................................................................................................................17

Charge filtration ......................................................................................................................................18

Redundant braking system requirement ............................................................................................19

Loop flushing.................................................................................................................................................19

Reservoir..........................................................................................................................................................19

Case drain usage for tandem pumps ....................................................................................................19

Bearing life and external shaft loading ...............................................................................................20

Hydraulic unit life .........................................................................................................................................21

Mounting flange loads ...............................................................................................................................22

Model code.....................................................................................................................................................23

Revised model code ....................................................................................................................................24

520L0635 • Rev EH • June 2009