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Unit of Measure

Key Dimensions

Engineering Group

 N/A Mounted Bearing

Bearing Number

 N/A 22211

Shaft Size

 N/A 55 mm

Shaft Size Type

 N/A Metric

Full Timken Part Number

 N/A QAAPF11A055SB QAAPF11A055SC QAAPF11A055SEB QAAPF11A055SEC QAAPF11A055SEM QAAPF11A055SEN QAAPF11A055SEO QAAPF11A055SET QAAPF11A055SM QAAPF11A055SN QAAPF11A055SO QAAPF11A055ST

Locking Style

 N/A Double Concentric

Housing Construction

 N/A Four-Bolt Pillow Block

Other Dimensions

Dimension A

 N/A 2.5 in63.5 mm

Dimension B

 N/A 5.25 in133.4 mm

Dimension C

 N/A 3.25 in82.6 mm

Dimension D Min

 N/A 6.56 in166.7 mm

Dimension D Max

 N/A 6.94 in176.2 mm

Dimension E

 N/A 1.69 in42.9 mm

Dimension F

 N/A 8.88 in225.4 mm

Dimension G

 N/A 2.75 in69.9 mm

Dimension H

 N/A 1 in25.4 mm

Dimension J (Bolt Size)

 N/A 0.5 in12 mm

Dimension L

 N/A 3.37 in85.6 mm

Dimension M

 N/A 2 in50.8 mm

Dimension RAA

 N/A 0.62 in15.9 mm

Dimension SAA

 N/A 4 in101.6 mm

Radial and Thrust Factors

C0 - Static Load

 N/A 31900 lbf142000 N

C - Dynamic Load (Basic)

 N/A 31400 lbf140000 N

e - Geometry Factor

 N/A 0.23

Y1 - Geometry Factor

 N/A 2.95

Y2 - Geometry Factor

 N/A 4.40

Engineering Seal Speed

Oil Lubrication - M/N Seal

 N/A 2200 rpm

Oil Lubrication - T Seal

 N/A 3800 rpm

Oil Lubrication - B/C/O Seal

 N/A 1600 rpm

Grease Lubrication - M/N Seal

 N/A 2200 rpm

Grease Lubrication - T Seal

 N/A 3200 rpm

Grease Lubrication - B/C/O Seal

 N/A 1600 rpm

Engineering Bearing Attributes

Float

 N/A 0.050 in1.270 mm

Shaft Tolerance

 N/A 0.0015 in0.038 mm

Engineering Internal Radial Clearance

Eng Internal Radial Clearance - Min

 N/A 0.0016

Eng Internal Radial Clearance - Max

 N/A 0.0026

Pre Install Clearance Min

 N/A 0.0016 in0.040 mm

Pre Install Clearance Max

 N/A 0.0026 in0.065 mm