Design of H1 bent axis motor...................................................................................................................................................... 6

General description......................................................................................................................................................................... 8

The H1 range of products........................................................................................................................................................ 8

H1 pictorial diagram........................................................................................................................................................................9

H1 system schematic.................................................................................................................................................................... 10

General specifications.................................................................................................................................................................. 11

Physical properties........................................................................................................................................................................ 11

Operating parameters..................................................................................................................................................................12

H1B speed range diagrams for open and closed circuit..................................................................................................13

Required inlet pressure diagrams (for cylinder block filling)......................................................................................... 14

Required outlet pressure diagrams (minimum for short time usage)........................................................................ 15

Required low pressure diagrams (minimum for extended usage).............................................................................. 16

Open circuit requirements..........................................................................................................................................................17

Fluid specifications........................................................................................................................................................................17

Determination of nominal motor size.................................................................................................................................... 18

Shaft rotation direction................................................................................................................................................................19

Loop flushing shuttle spool........................................................................................................................................................20

Loop flushing relief valve............................................................................................................................................................ 21

Displacement limiter.....................................................................................................................................................................21

Speed sensor................................................................................................................................................................................... 22

Sensor position..........................................................................................................................................................................24

Target ring...................................................................................................................................................................................24

Output speed...................................................................................................................................................................................25

System pressure............................................................................................................................................................................. 26

Case pressure...................................................................................................................................................................................26

External shaft seal pressure........................................................................................................................................................26

Temperature.................................................................................................................................................................................... 27

Viscosity.............................................................................................................................................................................................27

Filtration system ............................................................................................................................................................................28

Reservoir............................................................................................................................................................................................28

Fluid selection................................................................................................................................................................................. 29

Case drain......................................................................................................................................................................................... 29

Independent braking system.................................................................................................................................................... 29

Bearing loads and life................................................................................................................................................................... 29

Shaft torque..................................................................................................................................................................................... 29

Electric controls.............................................................................................................................................................................. 36

Electric proportional controls....................................................................................................................................................36

Electric two-position controls....................................................................................................................................................36

Servo supply.....................................................................................................................................................................................36

Control options...............................................................................................................................................................................37

PCOR................................................................................................................................................................................................... 37

Electric proportional with PCOR..........................................................................................................................................37

Electric two-position with PCOR......................................................................................................................................... 37

Electric two-position with proportional PCOR...............................................................................................................37

Hydraulic controls..........................................................................................................................................................................38

Hydraulic proportional control................................................................................................................................................. 38

Hydraulic two-position control.................................................................................................................................................38

Hydraulic proportional with PCOR.......................................................................................................................................... 39

Hydraulic two-position with PCOR.......................................................................................................................................... 39

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