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Timken QMMC18J308ST is a spherical roller cartridge mounted bearing unit. This QMMC series cartridge features a cast iron housing, a spherical roller bearing insert for self-alignment, and a two-setscrew locking mechanism for shaft attachment. It is designed for heavy-duty industrial applications such as conveyors, fans, and gearboxes where high radial load capacity and misalignment tolerance are required.
MODEL QMMC18J308ST
$926.14 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable:No
0.060 mm Shaft Size
3 1/2 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
109.7 mm Dimension R
0.29 in
111.8 mm Dimension L Fix
4.32 in
15 mm Dimension L Exp
4.4 in
7.4 mm Eng Internal Radial Clearance - Max
0.0039 Eng Internal Radial Clearance - Min:0.0024 Engineering group:Mounted Bearing Float:0.083 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
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
Cartridge
Locking Style
Eccentric
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 1/2 in
Shaft Size Type
Imperial
Shaft Tolerance
0.0030 in
Static Load
87200 lbf
Bearings The TIMKEN QMMC18J308ST SRB Housed Unit is a high-performance bearing solution designed for various industrial applications. Engineered by Timken, a global leader in bearings and industrial motion products, this housed unit guarantees reliability, durability, and efficient operation, making it an essential component for any machinery requiring precise motion control.
Key Features
| Robust Construction | Crafted from high-quality materials to withstand extreme operating conditions and provide long-lasting performance. |
|---|---|
| Precision Engineering | Designed with advanced technology to ensure optimal load distribution and reduce friction, enhancing overall efficiency. |
| Dimensions | This housed unit has a bore diameter of 1.125 inches (28.575 mm) and a cartridge width of 3.07 inches (78 mm), ensuring compatibility with a variety of applications. |
| Sealed Design | Equipped with seals that protect against contaminants, reducing maintenance needs and prolonging service life. |
| Temperature Range | Operates effectively in a temperature range of -20°F to 220°F (-29°C to 104°C), making it suitable for diverse environments. |
Applications
| Industrial Machinery | Perfect for use in conveyor systems, pumps, and other equipment requiring reliable motion control. |
|---|---|
| Automotive Industry | Ideal for applications in automotive assemblies where precision and durability are crucial. |
| Aerospace | Suitable for aircraft systems where performance and safety are paramount. |
| Energy Sector | Utilized in wind turbines and other energy production equipment for efficient operation. |
Benefits
| Increased Reliability | Minimizes the risk of downtime with its robust design and protective sealing features. |
|---|---|
| Enhanced Efficiency | Reduced friction and optimal load handling contribute to lower energy consumption and improved operational performance. |
| Cost-Effective Solution | Long service life and reduced maintenance requirements lead to lower total operating costs. --- 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