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Unit of Measure

Specifications

Engineering Group

N/A Mounted Bearing

Bearing Number

N/A 22218

Shaft Size

N/A 3.5000 in

Shaft Size Type

N/A Imperial

Full Timken Part Number

N/A QAAP18A308SB QAAP18A308SC QAAP18A308SEB QAAP18A308SEC QAAP18A308SEM QAAP18A308SEN QAAP18A308SEO QAAP18A308SET QAAP18A308SM QAAP18A308SN QAAP18A308SO QAAP18A308ST

Locking Style

N/A Double Concentric

Housing Construction

N/A Two-Bolt Pillow Block

UPC Code

N/A 0883450026505 0883450026512 0883450026536 0883450026543 0883450026550 0883450026567 0883450026574 0883450026581 0883450188265 0883450188425 0883450265768 0883450265928

Dimensions

Dimension A

N/A 3.75 in95.3 mm

Dimension B

N/A 7.69 in195.3 mm

Dimension C

N/A 5.13 in130.3 mm

Dimension D Min

N/A 9.38 in238.3 mm

Dimension D Max

N/A 11.25 in285.8 mm

Dimension F

N/A 13.5 in342.9 mm

Dimension G

N/A 3.41 in86.6 mm

Dimension H

N/A 1.88 in47.8 mm

Dimension J (Bolt Size)

N/A 0.875 in24 mm

Dimension L

N/A 4.3 in109.2 mm

Dimension M

N/A 2.59 in65.8 mm

Dimension RAA

N/A 0.89 in22.6 mm

Dimension SAA

N/A 5.18 in131.6 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
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