Shaft Bearing And Seals

Question 1

What is single row ( Deep Groove Ball Bearing

Answer 1

. It is mainly intended to support radial loads
. Supports combination loads and moderate axial loads in both directions
. The Bearing has contact angle that changes with direction of loading on the bearing
. It is classed as a radial load bearing
. It tolerates very little angular misalignmnet between the inner and outter rings

Question 2

Which ball bearing is this ?
It has Higher radial loads capacity without increasing the radial dimensions
. This bearing is mainly restricted to radial loads

Answer 2

Double Row Deep Groove Ball Bearing

Question 3

Which ball bearing is this ?
. It is uses when alignment is Ipractical or impossible to maintain
. The problem of misalignment is often due to shaft deflection
. It can support relatively small thrust loads in either direction
. It is available with taper bore for mounting on taper adapter sleeve

Answer 3

Self-Aligning Ball Bearings

Question 4

This bearing you can move the inner and outer rings axially in order to adjust the internal clearance

Answer 4

Single Row Anuglar contact ball bearings

Question 5

This bearing takes heavy radial and axial loads in both directions and also cannot tolerate any missalightment , as it changes (alters) the load distribution between two rings

Answer 5

Double Row Anular contact ball bearing

Question 6

This bearing can handle reversing loads in either direction because of the uniquely shaped raceways. Also this bearing is sepaarble bearing because it has a split inner ring and tolerates minimal amounts of misalignment.

Answer 6

Four point Aungular contact ball bearing

Question 7

These bearings are separable in both directions, they support radial loads only

Answer 7

Cylindrical roller bearings

Question 8

These bearings are used on fan bearings , steel mills , gearboxes. Also these bearings are good floating bearings and but they have some misalignment compatibility of the spherical roller

Answer 8

Carb bearing

Question 9

What’s loads do needle bearings support ?

Answer 9

Radial loads only

Question 10

Are they smaller than cylindrical roller bearings if so how much smaller

Answer 10

2 1/2 times as long as their diameter

Question 11

Do needle bearings take up less space yes or no

Answer 11

Yes

Question 12

This bearing following features are :
. The barrel shape rollers provide a wide load carry contact area
. This shape provide thrust in both directions and radial load capacity
.these bearings are made in double row configurations
. They gave high radial load capacity, but very little thrust capacity

What is this bearing called ?

Answer 12

Spherical roller bearing

Question 13

. This bearings can accommodate some misalignment
. It has the dynamic load ratting as sperical load bearings
. Not recommend for thrust load . It allows end float

Answer 13

Carb bearing

Question 14

What does a (z) mean in a bearing code ?

Answer 14

1 shield

Question 15

What does rs mean in a bearing code

Answer 15

One rubbing seal

Question 16

A Clarence fit on a bearing

Answer 16

Shaft is always smaller than the housing bore

Question 17

Transition fit

Answer 17

Means that that the shaft and bore sizes may , there tolerances may produce lose fit or sometimes the same size

Question 18

Interference fit

Answer 18

Shaft is larger than bearing bore

Question 19

Heating bearing points

Answer 19

. Never heat a bearing above 120 degrees =248 Fahrenheit
. Never heat seal bearing above 80 degrees =175 Fahrenheit

Question 20

What following conditions would be use for mechanical seals ?

Answer 20

. Relatively low speeds
. Severe service conditions