All Product Types > ENGINEERED BEARINGS > Mounted Bearings > Mounted Solid-Block Spherical Roller Bearings > Single Concentric Solid-Block Mounted Bearings > Single Concentric Four-Bolt Pillow Block > Part Number QAPF18A308S  

Part Number QAPF18A308S, Single Concentric 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 1/2 in

Shaft Size Type
Imperial

Full Timken Part Number
QAPF18A308SB
QAPF18A308SC
QAPF18A308SEB
QAPF18A308SEC
QAPF18A308SEM
QAPF18A308SEN
QAPF18A308SEO
QAPF18A308SET
QAPF18A308SM
QAPF18A308SN
QAPF18A308SO
QAPF18A308ST
QAPF18A308STNG

Locking Style
Single Concentric

Housing Construction
Four-Bolt Pillow Block

UPC Code
0883450046602
0883450046619
0883450046633
0883450046640
0883450046657
0883450046664
0883450046671
0883450046688
0883450189330
0883450189446
0883450266673
0883450266789
0883450500173


Dimensions

Dimension A
3.75 in
95.3 mm

Dimension B
7.69 in
195.3 mm

Dimension C
5.13 in
130.3 mm

Dimension D Min
8.88 in
225.6 mm

Dimension D Max
10.88 in
276.4 mm

Dimension E
2 in
50.8 mm

Dimension F
12.3 in
312.4 mm

Dimension G
3.75 in
95.3 mm

Dimension H
1.56 in
39.6 mm

Dimension J (Bolt Size)
0.75 in
20 mm

Dimension KA
1.44 in
36.6 mm

Dimension L
4.47 in
113.5 mm

Dimension M
2.59 in
65.8 mm

Dimension RA
0.31 in
7.9 mm

Dimension SA
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