Anti Friction Bearings

Question 1

What do anti friction bearings use?

Answer 1

Rolling elements

Question 2

How are anti friction bearings classified?

Answer 2

By the type of rolling element used

Question 3

What are the two main types of anti friction roller bearings classifications?

Answer 3

Ball
Roller

Question 4

What are the 4 variations of roller bearings?

Answer 4

Cylinder
Needle
Tapered
Spherical

Question 5

What is another name for deep grooved ball bearing?

Answer 5

Conrad

Question 6

What is the most common anti friction bearing?

Answer 6

Single row deep groove ball bearing
(Conrad)

Question 7

What loads can a single row deep groove bearing support?

Answer 7

Radial
Although it can take combination and moderate axial loads in both directions

Question 8

What is a single row deep groove ball bearings toleration for angular misalignment?

Answer 8

Very low

Question 9

Where is the single row deep groove ball bearings contact angle?

Answer 9

It changes with the direction of the loading bearing

Question 10

What is the difference between the single row deep groove ball bearing and the maximum capacity deep groove ball bearing?

Answer 10

The maximum capacity bearing is assembled with more balls

Question 11

What is the radial load capacity of the maximum capacity deep groove ball bearing in comparison to the single row deep groove ball bearing?

Answer 11

Higher radial load capacity

Question 12

What is the axial load capacity of the maximum capacity deep groove ball bearing in comparison to the single row deep groove ball bearing?

Answer 12

Much less

Question 13

What is the significance of the radial load on a double row deep groove ball bearing?

Answer 13

Higher radial load capacity without increasing the radial dimensions

Question 14

What is the double row deep groove ball bearing limited to?

Answer 14

Radial loads do to the filling slots

Question 15

What are the 3 types of deep groove ball bearings?

Answer 15

Single row
Maximum capacity
Double row

Question 16

When are internally self aligning ball bearings used?

Answer 16

When alignment is impractical or impossible to maintain
OR
when the shaft is moving at high speeds and extreme accuracy is required

Question 17

How do internally self aligning ball bearings handle thrust load?

Answer 17

Only relatively small thrust loads can be handled

Question 18

Can the self aligning ball bearings come with a tapered bore/sleeve (y/n)

Answer 18

Yes

Question 19

Describe the externally self aligning ball bearing

Answer 19

Deep groove ball bearing
Spherically ground outer ring
Mounts to a special housing

Question 20

What does the externally self aligning ball bearing allow for?

Answer 20

Misalignment

Question 21

When does the externally self aligning ball bearing NOT preform well?

Answer 21

Shaft wobble

Question 22

What load are single row angular contact ball bearings?

Answer 22

Combination bearings

Question 23

How do single row angular bearings handle thrust load?

Answer 23

Extremely well in one direction

Question 24

What must a single row angular contact ball bearing operate with?

Answer 24

Axial load component

Question 25

In reference to the single row angular contact ball bearing the axial load capacity ____________ with a ______________ in the contact angle

Answer 25

Increases
Increase

Question 26

How can you adjust the internal clearance (pre load) on a single row angular contact ball bearing?

Answer 26

Move the inner or outer rings axially

Question 27

What specialty style are single row angular contact ball bearings available in?

Answer 27

Precision

Question 28

What loads can double row angular contact ball bearings take?

Answer 28

Heavy radial and axial loads

Question 29

How does double row angular contact ball bearings tolerate misalignment?

Answer 29

They don’t.

Question 30

What’s the benefit of using double row angular contact ball bearings?

Answer 30

Requires less axial space than two single row angular contact ball bearings

Question 31

How would you find the bore size of a 32208 bearing?

Answer 31

08 x 5

40

Question 32

How would we check the clearance on pillow block bearings that are stopped but NOT disassembled

Answer 32

Use a pry bar and dials

Question 33

Why would you select a C2 type bearing over a standard anti friction bearing?

Answer 33

We require a slightly tighter fit

Typically for less noise and vibration