Silicon nitride ceramic bearings for shaft sizes from 0.125” up to 1.0”

These imperial ceramic ball bearings are manufactured from silicon nitride. Our Si3N4 bearings are available as full complement or with PEEK, PTFE or 316 stainless steel retainers. Silicon nitride bearings are very light at approximately 40% of the weight of steel bearings. They are non magnetic, non-conductive and are very corrosion resistant. Care should be taken with impact loads due to the greater brittleness of the silicon nitride. They can also withstand very high temperatures. Silicon nitride bearings can be used up to 800°C without a cage. A PEEK or PTFE cage limits the maximum temperature to 250°C. The standard radial play for these bearings is C3 but other options can be supplied. See Bearing Material in our technical section for more information or contact us.

Our imperial Si3N4 ceramic ball bearings are available in the UK as open or with PEEK seals. Some sizes are also available flanged. These bearings are generally used in specialist applications.

Products Variants

Silicon Nitride Ceramic Bearings - Inch

Si3N4

More Information

Zirconia Ceramic Bearings - Inch

ZrO2

More Information

Product Details Si3N4

BORE

(inch)

O.D.

(inch)

WIDTH

(inch)

SMB REFERENCE

MORE INFO

SMB REFERENCE

MORE INFO

0.125

0.375

0.1562

CCSI-R2

info

CCSI-R2-2PKS

info

0.1875

0.50

0.1562

CCSI-R3

info

CCSI-R3-2PKS

info

0.50

0.196

 

 

CCSI-R3-2PKS

info

0.25

0.625

0.196

CCSI-R4

info

CCSI-R4-2PKS

info

0.75

0.2188

CCSI-R4A

info

 

 

0.75

0.2812

 

 

CCSI-R4A-2PKS

info

0.375

0.875

0.2188

CCSI-R6

info

 

 

0.875

0.2812

 

 

CCSI-R6-2PKS

info

0.5

1.125

0.25

CCSI-R8

info

 

 

1.125

0.3125

 

 

CCSI-R8-2PKS

info

0.625

1.375

0.2812

CCSI-R10

info

 

 

1.375

0.3438

 

 

CCSI-R10-2PKS

info

0.75

1.625

0.3125

CCSI-R12

info

 

 

1.625

0.4375

 

 

CCSI-R12-2PKS

info

0.875

1.875

0.375

CCSI-R14

info

 

 

1.875

0.5

 

 

CCSI-R14-2PKS

info

1.0

2.0

0.375

CCSI-R16

info

 

 

2.0

0.5

 

 

CCSI-R16-2PKS

info

Our determination to remain specialised gives us a high level of product knowledge, providing bearing and lubrication solutions to existing or potential customers, whether individuals or large corporations. We don’t just sell bearings, we help to solve your problems. - Chris Johnson, managing director of SMB Bearings.