Hydraulic pump & actuator Flashcards

1
Q

actuator with linear force

A

cylinder

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2
Q

actuator delivers torque

A

motor

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3
Q

telescopic cylinders only have seals in this location

A

cylinder casing

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4
Q

end where drain port is located in spring return single acting cylinder

A

spring end (rod end)

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5
Q

cylinder with 2 pistons delivers big force with short stroke

A

tandem cylinder

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6
Q

for application in which load can force the piston to hit the end of the cylinder

A

cylinder cushion

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7
Q

end where cushion needle valve should not be completely closed off

A

rod end

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8
Q

metal collar that fits over the piston rod , to minimize side load

A

stop tubes

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9
Q

threads engage on the tooth side

A

NPT

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10
Q

threads engage on tooth root

A

NPTF

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11
Q

provides a way for you to remove trapped air from a cylinder when the main port connection are at the bottom

A

bleed ports

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12
Q

part of cylinders needs to passed when using a proximity switch

A

cushion collar

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13
Q

LSHT types include

A

radial piston
cam type radial piston
roller vane gerotor

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14
Q

HSLT types include

A

in line piston
bent axis piston
vane
gear

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15
Q

motors modified to allow the motor to turn only part of a revolution

A

limited rotation motor

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16
Q

the amount of fluid required to turn the output shaft one revolution

A

displacement

17
Q

the rotational force of a motor

A

torque

18
Q

torque depends on the 3

A

inlet pressure
surface area of the motor element
radius of rotation

19
Q

speed is determined by 2 factors

A

flow rate

volume

20
Q

pressure is determined by the 2 factors

A

load

displacement

21
Q

effieciency of gear motor ran at half speed

A

75-80%

22
Q

effieciency of gear motor ran at full speed

A

85%

23
Q

3 types of internal gear motor

A

direct drive
orbiting gear
roller vane gerotors