All Product Types > ENGINEERED BEARINGS > Mounted Bearings > Mounted Solid-Block Spherical Roller Bearings > Eccentric Solid-Block Mounted Bearings > Eccentric Four-Bolt Pillow Block > Part Number QMPX18J303S  

Part Number QMPX18J303S, Eccentric Four-Bolt Pillow Block

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Specifications  · Dimensions  · Radial and Thrust Factors  · Engineering Seal Speed  · Engineering Bearing Attributes  · Engineering Internal Radial Clearance

Specifications

Engineering Group
Mounted Bearing

Bearing Number
22218

Shaft Size
3 3/16 in

Shaft Size Type
Imperial

Full Timken Part Number
QMPX18J303SB
QMPX18J303SC
QMPX18J303SEB
QMPX18J303SEC
QMPX18J303SEM
QMPX18J303SEN
QMPX18J303SEO
QMPX18J303SET
QMPX18J303SM
QMPX18J303SN
QMPX18J303SO
QMPX18J303ST

Locking Style
Eccentric

Housing Construction
Four-Bolt Pillow Block

UPC Code
0883450093828
0883450093835
0883450093859
0883450093866
0883450093873
0883450093880
0883450093897
0883450093903
0883450159425
0883450160155
0883450252713
0883450253130


Dimensions

Dimension A
4 in
101.6 mm

Dimension B
7.92 in
201.2 mm

Dimension C
4.76 in
120.9 mm

Dimension D Min
10.81 in
274.6 mm

Dimension D Max
12.19 in
309.6 mm

Dimension E
3 in
76.2 mm

Dimension F
15 in
381 mm

Dimension G
4.75 in
120.7 mm

Dimension H
1.5 in
38.1 mm

Dimension J (Bolt Size)
0.75 in
20 mm

Dimension K
1.44 in
36.6 mm

Dimension L
4.96 in
126 mm

Dimension M
2.59 in
65.8 mm

Dimension R
0.32 in
8.1 mm

Dimension S
4.03 in
102.4 mm


Radial and Thrust Factors

C0 - Static Load
87200 lbf
388000 N

C - Dynamic Load (Basic)
79700 lbf
355000 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 in
2.108 mm

Shaft Tolerance
0.0030 in
0.076 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 in
0.060 mm

Pre Install Clearance Max
0.0039 in
0.100 mm



 DOWNLOADS 

Bearing Life Calculation Tool

Primary Sealing
(PDF, 411KB)

Secondary Sealing
(PDF, 720KB)

TIMKEN® SPHERICAL ROLLER BEARING SOLID-BLOCK MOUNTED BEARINGS