IMT Flashcards
The bearing sizes 04 through 96, the bore diameter equals what?
What bearing size is the bore diameter equal to five times the size number?
If the bearing size is 00, what is the bore diameter?
If the bore diameter is 10 what is the size number?
If the bearing size number is 01, what is the bore diameter?
What is the bearing size number if the bore diameter is 12 mm?
If the bearing size number is 02, what is bore diameter?
If the bore diameter is 15 mm what is the bearing size number?
If the bearing size number is 03 what is the bore diameter?
If the bore diameter is 17 what is the bearing size number?
6203RSR, what is the bearing size number for the bore diameter of this bearing?
For bearing 6203RSR, what does ‘03’ represent?
The characters 2RSR in a bearing number, signifies what?
How would two seals on a bearing number be shown?
The characters 2ZR, and a bearing number, signifies what?
What characters in a bearing number is used to show that a bearing has two shields?
What type of forces do bearings encounter?
Radial and axial forces 
how much end-play should a bearing have when it’s cold?
0.07 to 0.12 mm
Which configuration is used for a rotating shaft?
X configuration is used for what bearing configuration? 
Rotating housing configuration uses what bearing configuration?
The O configuration is used for what type of bearing configuration?
For X configuration in bearing theory, which race is locked, both axially and radially?
The inner races are locked, both axially and radially for what bearing configuration?
For the O configuration in bearing theory, which race is locked both axially and radially?
The outer race is locked, both axially and radially for what bearing configuration?
The correct fit used for rotating shaft is what?
H7k6, Hong Kong, is used for what?
The correct fit used for rotating housing is what?
N7g6, nogo, is used for what?
A. Bearing.
Vs
B. Bushing.
A. Higher RPMs
Vs
B. Heavier loads.
The three main families of clutches are?
Mechanical, electromagnetic, and hydraulic 
What is used to prevent overloading of a machine or drive system?
Torque limiter do what?
How is the torque limiter adjusted?
Manually setting the tension on a spring to change the pressure of a clutch disc.
Which type of chain is best used for timing?
Silent chain is assigned, work best and what situations?
ISO chains have the same pitch as?
ANSI chains have the same pitch as?
How do you find the pitch for ISO chains?
The first number is multiplied by 1/16
How do you find the pitch for ANSI chains?
The first number is multiplied by 1/8.
What letters designate that a chain is ISO? 
After the pitch number,
A = American
B = British
What is the most widely used type of chain?
What is significant about the roller chain?
Rollerless chains are best used for?
Which chain is can handle wear and is used at low speeds?
Pintle chains are used in what conditions?
Which chain is best used in the weather?
How much deflection is acceptable in a chain?
1/64 in. Per inch or 2% of the distance between sprocket
What is the purpose of the snub roller?
This roller is very close to the head roller to increase contact area on the head roller.
What is the rule for belt tracking?
“Track with friction not tension,”describes what?
A conveyor belt moves towards what?
The end of a roller/idler that a conveyor belt contacts first has what impact?
What are the categories of coupling?
Rigid, flexible, universal
The type of coupling misalignments are
Anguler, radial, axial
Module (M) = ?
Pitch circle diameter / # of teeth
(mm per tooth)
Diameter Pitch (DP) = ?
of teeth / Pitch circle diameter
(teeth per inch)
Minimum Backlash = ?
= 0.025 / Dp
= 0.025M
Maximum backlash = ?
= 0.035 / Dp
= 0.035M
What is the best way to eliminate backlash in a ball screw system?
Preloading the ball screw does what?
Dynamic seals are used where?
What type of seal is best for moving parts?
A box with a single diagonal arrow is a symbol for what?
What does a single lip seal symbol look like?
A box with two opposing diagonal arrows is a symbol for what?
What does the symbol for a double lip seal look like?
A box with a single diagonal arrow and an opposing diagonal line is a symbol for what?
What does the symbol for a single lip seal with an anti-dirt lip look like?
Maximum allowance, the greatest amount of clearance
Equal to the largest female size minus the smallest male size 
Minimum allowance, the least amount of clearance
Equal to the smallest female size minus the largest male size
Force fit for ANSI fits
FN #
Running clearance, sliding clearance fit, ANSI fits 
RC #
Locational clearance fit, ANSI fits
LC #
Transitional clearance or interference fit, ANSI fits
LT #
Locational interference fit, ANSI fits
LN #
ISO tolerance,
Capital letter equals what?
Lowercase letter equals what?
ISO tolerance,
Internal dimensions shown by?
External dimensions shown by?
What is the correct surface finish for an O-ring?
Ra 0.1
What is the correct surface finish for a bearing seat?
Ra 1.6
What is the correct surface finish for an oil seal?
Ra 0.8
What is the pitch for M5?
0.80
What is the pitch for M6?
1.00
What is the pitch for M8?
1.25
What is the pitch for M 10?
1.50
What is the pitch for M12?
1.75
