anti friction bearings

Question 1

What is an anti-friction Bearing?

Answer 1

The inner ring sits on the shaft when mounted it is made of hardened, high-grade steel the surface on which the rolling members roll called the raceway grinds to vary fine finish to reduce friction

Question 2

Name six anti-friction bearing types

Answer 2

Four point contact bearing

Self aligning ball, Bearing
thrust ball bearing

angular contact ball

bearing single row

deep groove ball bearing single row

deep groove ball bearing double row

Question 3

name 3 factors of bearings loads?

Answer 3

area of contact
direction of load
loaded zone

Question 4

under a ball bearing it is circular until a load applies to the ball and the it becomes what?

Answer 4

elliptical

Question 5

single row deep groove ball bearing

Answer 5

most common type of ball bearing . sometimes called a Conrad bearing

general purpose
suport radial load
tolerates very little angular misalignment between inner and outter races

Question 6

Maximum capacity, deep groove ball bearing is assembled with more balls. This is made possible by loading white.

Answer 6

By loading slots machined into the inner and outer raceways

Question 7

What bearing is even more sensitive to misalignment than the deep groove Bearing?

Answer 7

Maximum capacity, deep groove, ball bearing

Question 8

Why is the double row deep groove ball bearing largely replaced by double row angular contact bearing

Answer 8

Because of the filing slots, it is restricted to mainly radial loads

Question 9

Where is a internally self aligning Bearing used?

Answer 9

It is used when alignment is impractical or impossible to maintain this problem of misalignment is often do to shaft deflection

Question 10

T or F
internal self aligning bearings are available with a tapered board for mounting on a taper adaptor sleeve

Answer 10

true
This allows you to mount the bearing on the shaft wherever you want

Question 11

true or false
Self aligning, ball bearings can operate at high speeds with extreme accuracy

Answer 11

true

Question 12

You can use a cylindrical roller thrust bearing for very heavy ?

Answer 12

thrust loads

Question 13

Double row angler contact ball bearing offers what features

Answer 13

It takes heavy radio and axle loads in both directions

It’s speed rating is lower than deep groove, ball bearing or a single row angler contact bearing

Cannot tolerate any misalignment

Question 14

Needle bearings can have no cage, no inner ring or machined inner and outer rings. They are

Answer 14

2.5-10 times their diamter

Question 15

Tapered roller bearings take both axial and radial loads. The inner ring and outer ring are called

Answer 15

inner ring is called the cub
out ring is called the cone Tapered roller bearings take both axial and radial loads. The inner ring is called

Question 16

The double row spherical roller bearing has ——–shaped rollers that carry heavy loads and has internal self aligning capabilities. They are good for radial and axial loads.

Answer 16

barrel

Question 17

true or false. Carb bearings can take some misalignment, allows more axial displacement (movement). But not good for axial loads.

Answer 17

TRUE

Question 18

The first number in the 4 digit ISO code (metric) identifies the ?

Answer 18

type of bearing

Question 19

the second 2 numbers in a 5 digit code is the

Answer 19

dimension series

Question 20

what bearings can take some misalignment, allows more axial displacement (movement). But not good for axial loads.

Answer 20

carb

Question 21

In both codes the last 2 numbers are the bearings are?

Answer 21

the bore

Question 22

numbers indicate the amount of internal clearance. Normal clearance is between C 2 and C 3 and is not put on the bearing.

Answer 22

C
c1,c2,c3,c4,c5 indicate the amount of internal clearance. C1 is the smallest clearance C5 Is the largest.

Question 23

normal clearance lies between?

Answer 23

c2-c3

Question 24

What letter indicates a tapered for if it’s ratio is 1:12

Answer 24

K

Question 25

If the taper ratio is 1:30 as it is on, very large bearings the designation is what?

Answer 25

k30 but not constanct with all manufactures

Question 26

True or false
The speed limit of a bearing depends on how smoothly it rolls, and how much friction it has

Answer 26

true