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Unit of Measure

Specifications

Engineering Group

Mounted Bearing

Bearing Number

22218

Shaft Size

3 1/4 in

Shaft Size Type

Imperial

Full Timken Part Number

QMSN18J304SB QMSN18J304SC QMSN18J304SEB QMSN18J304SEC QMSN18J304SEM QMSN18J304SEN QMSN18J304SEO QMSN18J304SET QMSN18J304SM QMSN18J304SN QMSN18J304SO QMSN18J304ST

Locking Style

Eccentric

Housing Construction

Two-Bolt Pillow Block

UPC Code

0883450098427 0883450098434 0883450098458 0883450098465 0883450098472 0883450098489 0883450098496 0883450098502 0883450161008 0883450161367 0883450253666 0883450254052

Dimensions

Dimension A

3.94 in100 mm

Dimension B

7.87 in200 mm

Dimension C

4.76 in121 mm

Dimension D Min

10.98 in279 mm

Dimension D Max

11.5 in292 mm

Dimension F

13.58 in345 mm

Dimension G

3.39 in86 mm

Dimension H

1.54 in39 mm

Dimension J (Bolt Size)

0.75 in20 mm

Dimension K

1.46 in37 mm

Dimension L

4.29 in109 mm

Dimension M

2.6 in66 mm

Dimension R

0.28 in7 mm

Dimension S

4.06 in103 mm

Radial and Thrust Factors

C0 - Static Load

87200 lbf388000 N

C - Dynamic Load (Basic)

79700 lbf355000 N

e - Geometry Factor

0.23

Y1 - Geometry Factor

2.90

Y2 - Geometry Factor

4.31

Engineering Seal Speed

Oil Lubrication - M/N Seal

1400 rpm

Oil Lubrication - T Seal

2400 rpm

Oil Lubrication - B/C/O Seal

1000 rpm

Grease Lubrication - M/N Seal

1400 rpm

Grease Lubrication - T Seal

2000 rpm

Grease Lubrication - B/C/O Seal

1000 rpm

Engineering Bearing Attributes

Float

0.083 in2.108 mm

Shaft Tolerance

0.0030 in0.076 mm

Engineering Internal Radial Clearance

Eng Internal Radial Clearance - Min

0.0024

Eng Internal Radial Clearance - Max

0.0039

Pre Install Clearance Min

0.0024 in0.060 mm

Pre Install Clearance Max

0.0039 in0.100 mm