403 - Chapter 3

Question 1

Components of hydraulic cylinder

Answer 1

Piston
Rod
Chamber

Question 2

Double acting

Answer 2

Can put liquid and pressure on either end.

Question 3

Types of seals:

Answer 3

Wipers
Rod seals
O-rings
Piston seal
Chevron seal

Question 4

Which stroke is always stronger?

Answer 4

Extension stroke

Question 5

Volume on rod side is always smaller for full stroke.

Answer 5

True

Question 6

When Q and stroke is constant:

Answer 6

Then retraction time is smaller than extension time.

Question 7

How do we determine how large a piston diameter is required for the cylinder?

Answer 7

We need to focus on pressure. How much load we need to push or pull.

Question 8

What is the pump flow rate required to drive the cylinder through its stroke in a specified time?

Answer 8

Time component is flow rate. If you increase time then you increase flow rate.

Question 9

How much hydraulic horsepower does the fluid deliver to the cylinder?

Answer 9

HHP = P * Q / 1714

If pressure increases, then flow rate decreases