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Timken QMMH18J307ST is a spherical roller hanger bearing unit. The QMMH mount code indicates a hanger bearing configuration, with a frame size of 18 for heavy-duty support. It features a setscrew (ST) locking style for shaft attachment. This housed unit is designed for vertical shaft applications in industrial environments such as conveyors and screw conveyors.
MODEL QMMH18J307ST
$964.37 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable:No
0.060 mm Shaft Size
3 7/16 in Shaft Tolerance:0.0030 in
0.076 mm Shaft size type
Imperial Thread Size J:1 1/4-7UNC 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
160.3 mm Dimension R
0.12 in
3 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:6.31 in
Bearing Number
22218
C - Dynamic Load (Basic)
79700 lbf 355000 N
C0 - Static Load
87200 lbf 388000 N
Dimension A
6.31 in 160.3 mm
Dimension B
10.25 in 260.4 mm
Dimension C
4.76 in 120.9 mm
Dimension D
7.88 in 200.2 mm
Dimension E
2.5 in 63.5 mm
Dimension F
3 in 76.2 mm
Dimension G
3 in 76.2 mm
Dimension K
1.44 in 36.6 mm
Dimension L
3.91 in 99.3 mm
Dimension M
2.59 in 65.8 mm
Dimension R
0.12 in 3 mm
Dimension S
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
QMMH18J307SB QMMH18J307SC QMMH18J307SEB QMMH18J307SEC QMMH18J307SEM QMMH18J307SEN QMMH18J307SEO QMMH18J307SET QMMH18J307SM QMMH18J307SN QMMH18J307SO QMMH18J307ST
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
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 0.100 mm
Pre Install Clearance Min
0.0024 in 0.060 mm
Shaft Size
3 7/16 in
Shaft Size Type
Imperial
Shaft Tolerance
0.0030 in 0.076 mm
Static Load
87200 lbf
Thread Size J
1 1/4-7UNC
Y1 - Geometry Factor
2.90
Y2 - Geometry Factor
4.31
Roller Hanger Bearings The **TIMKEN QMMH18J307ST SRB Housed Unit** is a premium roller hanger bearing designed for exceptional performance in demanding industrial applications. Engineered by Timken, a leader in motion products and engineered bearings, this housed unit combines robust construction with precision engineering, making it an ideal choice for applications requiring reliable and efficient operation. ## Key Features • **Durable Construction:** Made with high-quality materials that provide resistance to wear and corrosion, ensuring longevity in harsh environments. • **Precision Engineering:** Features a tapered roller design that enables optimal load distribution and minimizes friction for smooth operation. • **Integrated Housed Design:** The SRB housed unit allows for easy installation and reduces the need for additional components, saving time and costs. • **High Load Capacity:** Designed to support significant radial and axial loads, making it suitable for heavy-duty applications. • **Sealed Design:** The unit is equipped with seals that protect against contaminants, ensuring consistent performance and reducing maintenance needs. ## Applications • **Industrial Machinery:** Ideal for use in conveyor systems, material handling equipment, and other machinery that requires reliable movement. • **Heavy-Duty Applications:** Perfectly suited for environments such as manufacturing plants, warehouses, and construction sites where durability is crucial. • **Compatibility:** Designed to fit seamlessly with existing systems, making it a versatile choice for various applications in different industries. ## Benefits • **Enhanced Reliability:** The Timken QMMH18J307ST ensures consistent performance, reducing the risk of downtime and maintenance costs. • **Increased Efficiency:** Its design minimizes energy loss due to friction, contributing to overall operational efficiency. • **Long Service Life:** With its durable construction and effective sealing, this bearing unit offers an extended service life, providing excellent value for investment. --- *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.
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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