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Timken QATU18A307SM is a take-up mounted spherical roller bearing unit with a 3 7/16 inch bore and single concentric locking style. It features a 22218 spherical roller bearing insert, designed for adjustable shaft positioning in conveyor and power transmission applications. The unit is built for heavy-duty service with self-aligning capability to accommodate misalignment.
View suggested Dodge alternativeMODEL QATU18A307SM
$995.91 Each
Prices are subject to change
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Returnable:No
0.060 mm Shaft Size
3 7/16 in Shaft Tolerance:0.0030 in
0.076 mm Shaft dia (in)
3 7/16 Shaft size type:Imperial Y1 - Geometry Factor:2.90 Y2 - Geometry Factor:4.31 e - Geometry Factor:0.23
0.100 mm Pre Install Clearance Min
0.0024 in
25.4 mm Dimension A1
3.63 in
36.6 mm Eng Internal Radial Clearance - Max
0.0039 Eng Internal Radial Clearance - Min:0.0024 Engineering group:Mounted Bearing Float:0.08 in
92.2 mm Dimension KA
1.44 in
Bearing number
22218
Bearing Number
22218
C - Dynamic Load (Basic)
79700 lbf 355000 N
C0 - Static Load
87200 lbf 388000 N
Dimension A1
3.63 in 92.2 mm
Dimension C
1 in 25.4 mm
Dimension D
7.63 in 193.8 mm
Dimension E
6.81 in 173 mm
Dimension F
1.81 in 46 mm
Dimension G
1.88 in 47.8 mm
Dimension J
4.88 in 124 mm
Dimension KA
1.44 in 36.6 mm
Dimension L
10.12 in 257 mm
Dimension M
2.59 in 65.8 mm
Dimension N
4.22 in 107.2 mm
Dimension P
6.25 in 158.8 mm
Dimension S
1.81 in 46 mm
e - Geometry Factor
0.23
Eng Internal Radial Clearance - Max
0.0039
Eng Internal Radial Clearance - Min
0.0024
Engineering group
Mounted Bearing
Engineering Group
Mounted Bearing
Float
0.08 in 2.03 mm
Full Timken Part Number
QATU18A307SB QATU18A307SC QATU18A307SEB QATU18A307SEC QATU18A307SEM QATU18A307SEN QATU18A307SEO QATU18A307SET QATU18A307SM QATU18A307SN QATU18A307SO QATU18A307ST
Grease Lubrication - B/C/O Seal
1000 rpm
Grease Lubrication - M/N Seal
1400 rpm
Grease Lubrication - T Seal
2000 rpm
Housing construction
Take-Up
Housing Construction
Take-Up
Locking style
Single Concentric
Locking Style
Single Concentric
Oil Lubrication - B/C/O Seal
1000 rpm
Oil Lubrication - M/N Seal
1400 rpm
Oil Lubrication - T Seal
2400 rpm
Pre Install Clearance Max
0.0039 in 0.100 mm
Pre Install Clearance Min
0.0024 in 0.060 mm
Shaft dia (in)
3 7/16
Shaft Size
3 7/16 in
Shaft size type
Imperial
Shaft Size Type
Imperial
Shaft Tolerance
0.0030 in 0.076 mm
Y1 - Geometry Factor
2.90
Y2 - Geometry Factor
4.31
Full timken part number: QATU18A307SB QATU18A307SC QATU18A307SEB QATU18A307SEC QATU18A307SEM QATU18A307SEN QATU18A307SEO QATU18A307SET QATU18A307SM QATU18A307SN QATU18A307SO QATU18A307ST
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read moreHow do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
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SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read more