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Timken QAAPR18A303ST spherical roller mounted unit in a two-bolt pillow block housing. Designed for heavy-duty applications requiring self-alignment and high load capacity, such as conveyors, fans, and industrial gearboxes. Features a spherical roller bearing insert for combined radial and axial loads.
MODEL QAAPR18A303ST
$891.96 Each
Prices are subject to change
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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
131.6 mm Eng Internal Radial Clearance - Max
0.0039 Eng Internal Radial Clearance - Min:0.0024 Engineering group:Mounted Bearing Float:0.083 in
20 mm Dimension RAA
0.84 in
21.3 mm Dimension SAA
5.18 in
235 mm Dimension J (Bolt Size)
0.75 in
285.8 mm Dimension D Min
9.25 in
95.3 mm Dimension D Max
11.25 in
Bearing number
22218 C - Dynamic Load (Basic):79700 lbf 355000 N C0 - Static Load:87200 lbf 388000 N Dimension:3.75 in
Bearing Number
22218
Dynamic Load (Basic)
79700 lbf
Eng Internal Radial ClearancMax
0.0039
Eng Internal Radial ClearancMin
0.0024
Engineering Group
Mounted Bearing
Float
0.083 in
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
Four-Bolt Pillow Block
Locking Style
Double 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
Pre Install Clearance Min
0.0024 in
Shaft Size
3 3/16 in
Shaft Size Type
Imperial
Shaft Tolerance
0.0030 in
Static Load
87200 lbf
Bearings The Timken QAAPR18A303ST SRB Housed Unit is a premium 2-Bolt Pillow Block Bearing designed to deliver exceptional performance and reliability in various industrial applications. Engineered by Timken, a global leader in bearings and industrial motion products, this housed unit is built to withstand demanding environments and ensure smooth operation.
Key Features
- Robust Construction: Made from high-quality materials that enhance durability and reduce wear, ensuring a long service life.
- Precision Design: Engineered for optimal load distribution, minimizing friction and heat generation during operation.
- Easy Installation: Featuring a 2-bolt pillow block design that simplifies mounting and alignment, allowing for quick and efficient setup.
- Sealed for Protection: Equipped with integrated seals that prevent contaminants from entering the bearing, extending the lifespan of the unit.
- Compatibility: Suitable for various applications in industries such as automotive, aerospace, and machinery, ensuring versatility and adaptability.
Applications
- Industrial Machinery: Ideal for use in conveyor systems, fan and blower applications, and other machinery requiring reliable rotational motion.
- Automotive: Perfect for automotive applications where high load capacity and durability are essential.
- Aerospace: Designed to meet the stringent demands of aerospace applications, providing precision and reliability.
- General Engineering: Suitable for a variety of engineering applications, ensuring enhanced operational efficiency.
Benefits
- Enhanced Reliability: Timken's commitment to quality ensures that this bearing provides consistent performance and reduces downtime in operations.
- Durability: Constructed to withstand harsh environments, the QAAPR18A303ST offers a long operational lifespan, reducing maintenance costs.
- Operational Efficiency: The precision design minimizes friction, contributing to lower energy consumption and improved overall efficiency in machinery. --- 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.
| Brand | Bestorq |
| Model | 6/C210 |
SKU: 5066946
Best company to buy from
I always buy from MRO is a very reliable company to work with
Read more