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Timken QAMC18A303SM is a spherical roller cartridge mounted unit (QAMC series) with a V-Lock (SM) concentric locking collar. This housed unit features a heavy-duty spherical roller bearing insert within a cartridge housing, designed for high radial load capacity and self-alignment in industrial applications such as conveyors, fans, and gearboxes. The frame size 18 indicates a robust housing suitable for demanding environments.
MODEL QAMC18A303SM
$886.26 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable:No
0.060 mm Shaft Size
3 3/16 in Shaft Tolerance:0.0030 in
0.076 mm 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
110.2 mm Dimension RA
0.29 in
112.3 mm Dimension L Fix
4.34 in
15 mm Dimension KA
1.44 in
36.6 mm Dimension L Exp
4.42 in
7.4 mm Dimension SA
4.03 in
Bearing number
22218 C - Dynamic Load (Basic):79700 lbf 355000 N C0 - Static Load:87200 lbf 388000 N Dimension:0.59 in
Bearing Number
22218
C - Dynamic Load (Basic)
79700 lbf 355000 N
C0 - Static Load
87200 lbf 388000 N
Dimension A
0.59 in 15 mm
Dimension B
1.06 in 26.9 mm
Dimension C
5.13 in 130.3 mm
Dimension D
0.23 in 5.8 mm
Dimension F
6.7500 in 171.5 mm
Dimension G
3.45 in 87.6 mm
Dimension KA
1.44 in 36.6 mm
Dimension L Exp
4.42 in 112.3 mm
Dimension L Fix
4.34 in 110.2 mm
Dimension M
2.59 in 65.8 mm
Dimension RA
0.29 in 7.4 mm
Dimension SA
4.03 in 102.4 mm
Dynamic Load (Basic)
79700 lbf
e - Geometry Factor
0.23
Eng Internal Radial Clearance - Max
0.0039
Eng Internal Radial Clearance - Min
0.0024
Eng Internal Radial ClearancMax
0.0039
Eng Internal Radial ClearancMin
0.0024
Engineering Group
Mounted Bearing
Float
0.083 in 2.108 mm
Full Timken Part Number
QAMC18A303SB QAMC18A303SC QAMC18A303SEB QAMC18A303SEC QAMC18A303SEM QAMC18A303SEN QAMC18A303SEO QAMC18A303SET QAMC18A303SM QAMC18A303SN QAMC18A303SO QAMC18A303ST
Geometry Factor
4.31
Grease Lubrication - B/C/O Seal
1000 rpm
Grease Lubrication - M/N Seal
1400 rpm
Grease Lubrication - T Seal
2000 rpm
Housing Construction
Cartridge
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 Size
3 3/16 in
Shaft Size Type
Imperial
Shaft Tolerance
0.0030 in 0.076 mm
Static Load
87200 lbf
Y1 - Geometry Factor
2.90
Y2 - Geometry Factor
4.31
Bearings The Timken QAMC18A303SM SRB Housed Unit is a high-performance bearing solution designed for demanding industrial applications. Engineered by Timken, a global leader in bearings and industrial motion products, this housed unit combines durability and reliability to meet the rigorous standards of various industries.
Key Features
- Design: The housed unit features a solid cast iron housing, providing superior strength and stability during operation.
- Bearing Type: Incorporates a spherical roller bearing design, allowing for misalignment accommodation and reducing friction.
- Dimensions: The unit has a bore diameter of 18 mm, ensuring compatibility with a range of shafts and applications.
- Sealing: Equipped with a double-lip seal to protect against contaminants and retain lubrication, enhancing longevity.
- Load Capacity: Capable of handling radial and axial loads, making it suitable for various heavy-duty applications.
Applications
- Industrial Machinery: Ideal for high-load applications in manufacturing and processing equipment.
- Automotive: Suitable for use in automotive assemblies where reliability and performance are critical.
- Mining and Construction: Provides robust performance in harsh environments, ensuring operational efficiency.
Benefits
- Enhanced Reliability: The spherical roller design minimizes wear and extends bearing life, reducing downtime and maintenance costs.
- Operational Efficiency: The housed unit's robust construction allows for smooth operation even under heavy loads, improving overall productivity.
- Versatile Compatibility: Designed for easy integration into various systems, the QAMC18A303SM adapts to different configurations and applications. --- Product information compiled with AI assistance for reference purposes.
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.
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read more