Anti-Friction Bearings

Question 1

The surface on which the rolling elements roll?

Answer 1

The raceway (page 2)

Question 2

The 3 functions of the cage?

Answer 2

1) Prevent rolling elements from rubbing. 2)Push rolling elements through unloaded zone.
3)Guide (Separate) elements with minimum friction. (page 2)

Question 3

Rolling elements should NOT:

Answer 3

Slide, skid, drag (page 2)

Question 4

The first number on the bearing code indicates?

Answer 4

Type of bearing (Page 3)

Question 5

Round, cylindrical, needle, tapered or spherical describe what?

Answer 5

Rolling elements (Page 3)

Question 6

Area of Contact, Direction of Load, and Loaded Zone are all factors that affect the bearings ability to?

Answer 6

Carry a load (page 4)

Question 7

Larger area of contact results in:

Answer 7

Larger load capacity (page 5)

Question 7

Larger area of contact results in:

Answer 7

Larger load capacity (page 5)

Question 8

What are the 3 types of load a bearing can handle?

Answer 8

Axial, Radial, Combination (page 5)

Question 9

Loads act on a radial bearing in which direction?

Answer 9

Perpendicular (90 degrees to shaft) (Page 5)

Question 10

A load parallel with the shaft is called?

Answer 10

Axial or Thrust

Question 11

What load acts on a bearing that is greater than 0° but less than 90°

Answer 11

Combination

Question 12

What determines the loaded zone?

Answer 12

The correct fit

Question 13

The loaded zone depends on:

Answer 13

Internal Clearance or Preload (page 7)

Question 14

As clearance decreases:

Answer 14

The loaded zone increases (page7)

Question 15

Why does a larger loaded zone increase the capacity of the bearing?

Answer 15

Larger number of balls supporting load (page 7)

Question 16

Type of rolling element, direction of load, and internal clearance/preload determine what?

Answer 16

Speed and load capacity rating (Page 8)

Question 17

Ball Thrust Bearing tells you what about the rolling element/bearing

Answer 17

The shape and the direction of loading (Page 8)

Question 18

Most common type of ball bearing?

Answer 18

Deep groove ball bearing

Question 19

6208 Indicates which TYPE of bearing?

Answer 19

Single Row Deep Groove Ball Bearing

Question 20

in a Four-Digit ISO bearing designation, what would the second number indicate? (X2XX)

Answer 20

The dimension series.

Question 21

A bearing designation with the last two digits of 08 can have a bore diameter of what? (XX08)

Answer 21

8mm and 40mm

Question 22

When pressing a bearing on a shaft, what is the best practice?

Answer 22

Inner, both preferably

Question 23

When pressing a bearing into an interference fit housing which race should you press on?

Answer 23

Outer, both preferably

Question 24

Maximum capacity ball bearings have less axial load capacity than standard deep groove ball bearings (True or False)

Answer 24

True (page 10)

Question 25

Double Row Deep Groove Ball Bearings offer higher radial load capacity without increasing radial dimensions (T/F)

Answer 25

True (page 10)

Question 26

Double Row Deep Groove Ball Bearing has a designation of?

Answer 26

4

Question 27

Double Row Self-Aligning ball bearing is externally self-aligning (T/F)

Answer 27

False. Internally

Question 28

In an internally self-aligning ball bearing, which ring is contoured to facilitate alignment?

Answer 28

Outer

Question 29

In an externally self-aligning ball bearing which ring is contoured to facilitate alignment?

Answer 29

Outer