Bearing ISO codes Flashcards

Question 1

Q

6XXX

Answer

A

Single row deep groove ball bearing, or Conrad

Question 2

Q

0XXX

Answer

A

Double row angular contact ball bearing

Question 3

Q

1XXX

Answer

A

double row self aligning ball bearing

Question 4

Q

2XXX

Answer

A

spherical roller bearing

Question 5

Q

3XXX

Answer

A

Tapered roller bearing

Question 6

Q

4XXX

Answer

A

Double row deep groove ball bearing

Question 7

Q

5XXX

Answer

A

Ball thrust bearing

Question 8

Q

7XXX

Answer

A

Single row angular contact bearing

Question 9

Q

8XXX

Answer

A

Cylindrical roller thrust bearing

Question 10

Q

NXXX

Answer

A

Single row cylindrical roller radial load bearing

Question 11

Q

NNUXXX

Answer

A

Double row cylindrical roller bearing

Question 12

Q

QJXXX

Answer

A

Four point angular contact bearing

Question 13

Q

X0XX

Answer

A

Series 00 Ultra Light

Question 14

Q

X1XX

Answer

A

Series 100 Extra Light

Question 15

Q

X2XX

Answer

A

Series 200 Light

Question 16

Q

X3XX

Answer

A

Series 300 Medium

Question 17

Q

X4XX

Answer

A

Series 400 Medium

Question 18

Q

XX00

Answer

A

10mm Bore

Question 19

Q

XX01

Answer

A

12mm Bore

Question 20

Q

XX02

Answer

A

15mm Bore

Question 21

Q

XX03

Answer

A

17mm Bore

Question 22

Q

XX04

Answer

A

20mm Bore

Note: From 20-480mm multiply the last two digits of bearing number by 5 to get the bore

Question 23

Q

XX05

Answer

A

25mm Bore

Note: From 20-480mm multiply the last two digits of bearing number by 5 to get the bore

Question 24

Q

XX30

Answer

A

150mm Bore

Note: From 20-480mm multiply the last two digits of bearing number by 5 to get the bore

Question 25

Q

XX500

Answer

A

500mm bore

Note: Above 480mm bore size is directly included

Question 26

Q

XXXXK

Answer

A

tapered bore, 1:12 taper

Question 27

Q

XXXXK30

Answer

A

tapered bore, 1:30 taper

Question 28

Q

XXXX Z

Answer

A

Shielded bearing

Question 29

Q

XXXX RS

Answer

A

Rubbing seal

Question 30

Q

XXXX 2RS

Answer

A

Rubbing seals, both sides

Question 31

Q

XXXX P2

Answer

A

Small tolerance

Question 32

Q

XXXX P6

Answer

A

Large tolerance

Question 33

Q

XXXX C1

Answer

A

Smallest clearance

Used only when freedom from all vibration is required

Note: No mark indicates normal clearance

Question 34

Q

XXXX C2

Answer

A

Less than normal clearance

Used when a normal bearing would allow too much deflection in the shaft

Note: No mark indicates normal clearance

Question 35

Q

XXXX C3

Answer

A

More than normal clearance

Used where running temperature on a normal bearing would eliminate all clearance

Note: No mark indicates normal clearance

Question 36

Q

XXXX C4

Answer

A

More clearance than C3

Used when there are press fits on both rings

Note: No mark indicates normal clearance

Question 37

Q

XXXX C5

Answer

A

More clearance than C4

Used when there are press fits in both rings, as well as a rise in temperature

Note: No mark indicates normal clearance

Question 38

Q

XX3

Answer

A

3mm bore

Note: under 10mm, bearing bore is directly written

Question 39

Q

XX8

Answer

A

8mm bore

Note: under 10mm, bearing bore is directly written