What does indicate C3 in bearing number?

What does indicate C3 in bearing number?

Internal clearance being C3 means that the bearing has room for expansion if needed between the races of the bearing, whilst holding the outer ring and moving the inner ring in a radial movement you will detect a little amount of play between the two rings.

What does C3 mean on SKF bearing?

Internal clearance
Internal clearance

ISO clearance class	SKF designation suffix	Internal clearance
Group N	–	Normal
Group 3	C3	Greater than Normal
Group 4	C4	Greater than C3
Group 5	C5	Greater than C4

Do I need a C3 bearing?

There are certain times when it is necessary to specify a bearing with increased clearance (C3 or C4): When there is a significant press fit on the shaft and/or housing. When there is a very slight misalignment between the bearing housing and shaft. When using in elevated temperatures.

Should motorcycle wheel bearings be C3?

Applications like motorcycle wheels or bicycle wheels do not require C3 rated bearings.

How do you read a SKF bearing?

The first digit indicates the width or height series (dimensions B, T or H). The second digit identifies the diameter series (dimension D). The last two digits of the basic designation identify the size code of the bearing bore. The size code multiplied by 5 gives the bore diameter (d) in mm.

What is CN bearing clearance?

CN is the “normal clearance” and is defined by DIN 620 and ISO 5753 and is used for bearings in normal operating conditions; C1 and C2 class bearing have radial clearances smaller than CN.

What is the use of C3 bearing?

C3 is designed for hot running environments; engines etc. where the bearing temp could reach 100deg or more. C4 more extreme temperature applications and higher speed environments. C5 the highest clearance bearing available, are extremely loose to start and can knock until at operating speeds and temperature.