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Unit of Measure

Key Dimensions

Engineering Group

 N/A Mounted Bearing

Bearing Number

 N/A 22212

Shaft Size

 N/A 55 mm

Shaft Size Type

 N/A Metric

Full Timken Part Number

 N/A TAAPKT12K055SB TAAPKT12K055SC TAAPKT12K055SEB TAAPKT12K055SEC TAAPKT12K055SEM TAAPKT12K055SEN TAAPKT12K055SEO TAAPKT12K055SET TAAPKT12K055SM TAAPKT12K055SN TAAPKT12K055SO TAAPKT12K055ST

Locking Style

 N/A Tapered Adapter

Housing Construction

 N/A Two-Bolt Pillow Block

Other Dimensions

Dimension A

 N/A 3 in76.2 mm

Dimension B

 N/A 5.75 in146.1 mm

Dimension C

 N/A 3.14 in79.8 mm

Dimension D Min

 N/A 7.69 in195.3 mm

Dimension D Max

 N/A 8.81 in223.8 mm

Dimension F

 N/A 11.25 in285.8 mm

Dimension G

 N/A 2.38 in60.5 mm

Dimension H

 N/A 1.75 in44.5 mm

Dimension J (Bolt Size)

 N/A 0.75 in20 mm

Dimension L

 N/A 2.67 in67.8 mm

Dimension MT

 N/A 1.62 in41.1 mm

Dimension RTT

 N/A 0.27 in6.9 mm

Dimension ST

 N/A 3.08 in78.3 mm

Radial and Thrust Factors

C0 - Static Load

 N/A 39000 lbf174000 N

C - Dynamic Load (Basic)

 N/A 38100 lbf169000 N

e - Geometry Factor

 N/A 0.24

Y1 - Geometry Factor

 N/A 2.84

Y2 - Geometry Factor

 N/A 4.23

Engineering Seal Speed

Oil Lubrication - M/N Seal

 N/A 2000 rpm

Oil Lubrication - T Seal

 N/A 3500 rpm

Oil Lubrication - B/C/O Seal

 N/A 1650 rpm

Grease Lubrication - M/N Seal

 N/A 2000 rpm

Grease Lubrication - T Seal

 N/A 3000 rpm

Grease Lubrication - B/C/O Seal

 N/A 1550 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 0.0030

Eng Internal Radial Clearance - Max

 N/A 0.0037

Pre Install Clearance Min

 N/A 0.0030 in0.075 mm

Pre Install Clearance Max

 N/A 0.0037 in0.094 mm