SACA 301 (Mechanical Engineering) DRIVES
COMPLETE GUIDE.
Why does the timing belt require one pulley to have a flange?
To prevent the belt from "walking"
Knowing that sprockets are used for chain drives and sheaves used are for
V-belt drives, what do you attach to a bushing to complete a timing belt
drive?
A pulley
What would cause excessive stretch in a V-belt drive system
Excessive tension
Which of the following is NOT an indication that a V-belt drive needs to be
replaced
Top surface of the belt is worn
In order to find the nominal length of a conventional V-belt you must
measure
The inside length of the belt
In the wedge belt code, the nominal belt length is interpreted as
1/10 of the outside length of the belt
Which type of shaft misalignment should be corrected first
Vertical angular
Which type of flexible coupling would handle shock loads the best
Elastomer in shear
, What causes the pins on the links of a multi strain roller chain to rotate or
begin to stick out?
Misalignment
A chain drive sprocket must be replaced. The chain is a roller chain with a
pitch of 3/4 of an inch. The sprocket must have 35 teeth, double strand,
and type C hub with a finished bore. What is the sprocket code?
D60C35
What is true about a chain with the code 120-4?
It has four strands
What is the actual length of a roller chain with a code of 60 with 40 links?
30 inches
What does hook teeth on a sprocket indicate?
Overloaded drive
Too little tension on a chain drive can cause
The chain to ride high on the sprocket
A common method of mounting type A sprockets to a shaft is
Weld them to the shaft
Chain pitch specifies
Chain size and length
Which type of coupling allows for more torsional misalignment
Grid coupling
The most likely reason for chain wear and breakage in a chain coupling is
Coupling misalignment or insufficient lubrication
COMPLETE GUIDE.
Why does the timing belt require one pulley to have a flange?
To prevent the belt from "walking"
Knowing that sprockets are used for chain drives and sheaves used are for
V-belt drives, what do you attach to a bushing to complete a timing belt
drive?
A pulley
What would cause excessive stretch in a V-belt drive system
Excessive tension
Which of the following is NOT an indication that a V-belt drive needs to be
replaced
Top surface of the belt is worn
In order to find the nominal length of a conventional V-belt you must
measure
The inside length of the belt
In the wedge belt code, the nominal belt length is interpreted as
1/10 of the outside length of the belt
Which type of shaft misalignment should be corrected first
Vertical angular
Which type of flexible coupling would handle shock loads the best
Elastomer in shear
, What causes the pins on the links of a multi strain roller chain to rotate or
begin to stick out?
Misalignment
A chain drive sprocket must be replaced. The chain is a roller chain with a
pitch of 3/4 of an inch. The sprocket must have 35 teeth, double strand,
and type C hub with a finished bore. What is the sprocket code?
D60C35
What is true about a chain with the code 120-4?
It has four strands
What is the actual length of a roller chain with a code of 60 with 40 links?
30 inches
What does hook teeth on a sprocket indicate?
Overloaded drive
Too little tension on a chain drive can cause
The chain to ride high on the sprocket
A common method of mounting type A sprockets to a shaft is
Weld them to the shaft
Chain pitch specifies
Chain size and length
Which type of coupling allows for more torsional misalignment
Grid coupling
The most likely reason for chain wear and breakage in a chain coupling is
Coupling misalignment or insufficient lubrication
