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Timken QAC18A307SM is a piloted flange cartridge mounted spherical roller bearing. It features a 3 7/16 inch imperial shaft bore with single concentric locking and incorporates a 22218 series spherical roller bearing insert. This housed unit is designed for heavy-duty applications requiring high radial load capacity and self-alignment.
View suggested Dodge alternativeMODEL QAC18A307SM
$1,154.63 Each
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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
102.4 mm Eng Internal Radial Clearance - Max
0.0039 Eng Internal Radial Clearance - Min:0.0024 Engineering group:Mounted Bearing Float:0.083 in
106.4 mm Dimension RA
0.16 in
108.5 mm Dimension L Fix
4.19 in
130.3 mm Dimension B Exp
2.96 in
20 mm Dimension KA
1.44 in
219.2 mm Dimension J (Bolt Size)
0.75 in
36.6 mm Dimension L Exp
4.27 in
4.1 mm Dimension SA
4.03 in
73.2 mm Dimension BC
8.63 in
75.2 mm Dimension B Fix
2.88 in
Bearing number
22218
Engineering group
Mounted Bearing
Housing construction
Piloted Flange Cartridge
Locking style
Single Concentric
Shaft dia (in)
3 7/16
Shaft size type
Imperial
Full timken part number: QAC18A307SB QAC18A307SC QAC18A307SEB QAC18A307SEC QAC18A307SEM QAC18A307SEN QAC18A307SEO QAC18A307SET QAC18A307SM QAC18A307SN QAC18A307SO QAC18A307ST
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.
| Brand | Siemens Controls |
| Model | 8WD4420-5DC |
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read more