Your Go-To Hydraulics Glossary

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Whether you need detailed technical guidance or already know exactly what you're looking for, we believe in transparency – ensuring you're fully informed about your choices. Our Hydraulics Glossary is part of that commitment.

We understand that our customers come with varying levels of technical knowledge, from seasoned engineers to absolute beginners. Our award-winning team is committed to making hydraulic knowledge accessible, never overwhelming you with jargon. If you’re not a hydraulic expert, why not bookmark this curated collection of essential hydraulic engineering terms and definitions?

This glossary covers everything from Abrasion—the external damage to hose assemblies caused by friction—to Working Pressure, which defines the maximum pressure a hose can withstand, including momentary surges during service. And, of course, everything in between!

If you can’t find the term you’re looking for—or you happen to know a hydraulic term starting with ‘Z’, we’d love to hear from you! Reach out at feedback@hydraulicsonline.com, and let’s keep refining this glossary together.

 

Explore the A-Z of Hydraulics – Click a letter to dive into our glossary and expand your knowledge…

A a:

“Abrasion” to “Attenuator”

A:

B b:

“Back Connected” to “Bypass”

B:

C c:

“Cam” to “Cylinder Thrust”

C:

D d:

“Dead Time” to “Dust Plug”

D:

E e:

“Eccentric Wall” to “Exhaust Time”

E:

F f:

“Fatigue” to “Full-Fluid-Film Lubrication”

F:

G g:

“Gas-Loaded Accumulator” to “Ground”

G:

H h:

“Head” to “Hydrostatic Transmission”

H:

I i:

“Immiscible” to “Interface”

I:

J j:

“Joule”

J:

K k;

“Kinematic Viscosity” and “Kinetic Energy”

K:

L l:

“Lag” to “Lubricity”

L:

M m:

“Manifold” to “Muffler”

M:

N n:

“Needle Valve” to “Non-Petrolium Based Oil”

N:

O o:

“O-Ring” to “Oxidation Inhibitor”

O:

P p:

“Packing” to “Pumps”

P:

Q q:

“Quick Action Coupling”

Q:

R r:

“Rack and Pinion Actuator” to “Rotary Actuator”

R:

S s:

“Sae Port” to “System Pressure”

S:

T t:

“Tandem-Centre Valves” to “Two-Way Valves”

T:

U u:

“Unbalanced Vane Pump” to “Unloading Valve”

U:

V v:

“Vacuum” to “Viscosity”

V:

W w:

“Wafer Valve” to “Working Pressure”

W

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