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Unit of Measure

Key Dimensions

Engineering Group

 N/A Mounted Bearing

Bearing Number

 N/A 22218

Shaft Size

 N/A 3 3/16 in

Shaft Size Type

 N/A Imperial

Full Timken Part Number

 N/A QAASN18A303SB QAASN18A303SC QAASN18A303SEB QAASN18A303SEC QAASN18A303SEM QAASN18A303SEN QAASN18A303SEO QAASN18A303SET QAASN18A303SM QAASN18A303SN QAASN18A303SO QAASN18A303ST

Locking Style

 N/A Double Concentric

Housing Construction

 N/A Two-Bolt Pillow Block

UPC Code

 N/A 0883450350662 0883450350679 0883450350686 0883450350693 0883450350709 0883450350716 0883450350723 0883450350730 0883450350747 0883450350754 0883450350761 0883450350778

Other Dimensions

Dimension A

 N/A 3.94 in100 mm

Dimension B

 N/A 7.87 in200 mm

Dimension C

 N/A 5.12 in130 mm

Dimension D Min

 N/A 10.98 in279 mm

Dimension D Max

 N/A 11.50 in292 mm

Dimension F

 N/A 13.58 in345 mm

Dimension G

 N/A 3.39 in86 mm

Dimension H

 N/A 1.54 in39 mm

Dimension J (Bolt Size)

 N/A 0.75 in20 mm

Dimension L

 N/A 4.29 in109 mm

Dimension M

 N/A 2.59 in65.8 mm

Dimension RAA

 N/A 0.91 in23 mm

Dimension SAA

 N/A 5.2 in132 mm

Radial and Thrust Factors

C0 - Static Load

 N/A 87200 lbf388000 N

C - Dynamic Load (Basic)

 N/A 79700 lbf355000 N

e - Geometry Factor

 N/A 0.23

Y1 - Geometry Factor

 N/A 2.90

Y2 - Geometry Factor

 N/A 4.31

Engineering Seal Speed

Oil Lubrication - M/N Seal

 N/A 1400 rpm

Oil Lubrication - T Seal

 N/A 2400 rpm

Oil Lubrication - B/C/O Seal

 N/A 1000 rpm

Grease Lubrication - M/N Seal

 N/A 1400 rpm

Grease Lubrication - T Seal

 N/A 2000 rpm

Grease Lubrication - B/C/O Seal

 N/A 1000 rpm

Engineering Bearing Attributes

Float

 N/A 0.083 in2.108 mm

Shaft Tolerance

 N/A 0.0030 in0.076 mm

Engineering Internal Radial Clearance

Eng Internal Radial Clearance - Min

 N/A 0.0024

Eng Internal Radial Clearance - Max

 N/A 0.0039

Pre Install Clearance Min

 N/A 0.0024 in0.060 mm

Pre Install Clearance Max

 N/A 0.0039 in0.100 mm