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Timken QMP18J307SEC is a Q-series spherical roller mounted bearing unit. This two-bolt pillow block features a frame size 18 cast iron housing and a single eccentric collar (SEC) locking mechanism for secure shaft attachment. It is designed for heavy-duty industrial applications such as conveyors, fans, and processing equipment where shock loads and misalignment are present.

Name: Timken QMP18J307SEC is a Q-series spherical roller mounted bearing unit. This two-bolt pillow block features a frame size 18 cast iron housing and a s
Brand: Timken
Price: 918.61 USD
Availability: InStock
Rating: 5.0 (1 reviews)

MODEL QMP18J307SEC

BRAND

Timken

SKU

5984438

UOM

each

$918.61 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 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

238.3 mm Dimension J (Bolt Size)

0.875 in

24 mm Dimension R

0.28 in

285.8 mm Dimension D Min

9.38 in

7.1 mm Eng Internal Radial Clearance - Max

0.0039 Eng Internal Radial Clearance - Min:0.0024 Engineering group:Mounted Bearing Float:0.083 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

C - Dynamic Load (Basic)

79700 lbf 355000 N

C0 - Static Load

87200 lbf 388000 N

Dimension A

3.75 in 95.3 mm

Dimension B

7.69 in 195.3 mm

Dimension C

4.76 in 120.9 mm

Dimension D Max

11.25 in 285.8 mm

Dimension D Min

9.38 in 238.3 mm

Dimension F

13.5 in 342.9 mm

Dimension G

3.41 in 86.6 mm

Dimension H

1.88 in 47.8 mm

Dimension J (Bolt Size)

0.875 in 24 mm

Dimension K

1.44 in 36.6 mm

Dimension L

4.3 in 109.2 mm

Dimension M

2.59 in 65.8 mm

Dimension R

0.28 in 7.1 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

QMP18J307SB QMP18J307SC QMP18J307SEB QMP18J307SEC QMP18J307SEM QMP18J307SEN QMP18J307SEO QMP18J307SET QMP18J307SM QMP18J307SN QMP18J307SO QMP18J307ST

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

Two-Bolt Pillow Block

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

Y1 - Geometry Factor

2.90

Y2 - Geometry Factor

4.31

Bearings The TIMKEN QMP18J307SEC SRB Housed Unit is a high-performance 2-Bolt Pillow Block Bearing designed to provide exceptional support and reliability in various industrial applications. This housed unit features a robust construction that ensures optimal load distribution and durability, making it ideal for demanding environments.

Key Features

Type	2-Bolt Pillow Block Bearing
Material	High-quality steel for enhanced strength and corrosion resistance
Mounting Style	Designed for easy installation with two-bolt mounting configuration
Sealing System	Integrated seals to prevent contamination and retain lubrication
Load Capacity	Engineered to handle significant radial and axial loads efficiently

Applications

Industrial Machinery	Suitable for use in conveyor systems, pumps, and fans
Automotive	Ideal for various automotive applications requiring reliable bearing solutions
Agriculture Equipment	Perfect for agricultural machinery that operates under heavy loads
Compatibility	Compatible with standard shaft sizes, ensuring versatility across different applications

Benefits

Enhanced Reliability	Designed to withstand harsh operating conditions, reducing maintenance needs
Efficiency	Optimizes performance and extends the life of machinery components
Ease of Installation	Simplified mounting process minimizes downtime during installation
Cost-Effective	Durable construction leads to lower replacement costs over time --- Product information compiled with AI assistance for reference purposes.

Eccentric Two Bolt Pillow Block

SKU: 5066946

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I always buy from MRO is a very reliable company to work with

How 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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