TS (Single Row Tapered Roller Bearings) (Imperial) 438W-432A

The 438W-432A is a single-row tapered roller bearing with a 1.75″ bore and 3.75″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 28500 lbf radially and 3600 lbf thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures durability under heavy use. The bearing operates smoothly in temperatures from -30°C to 110°C, suitable for demanding environments.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for industrial machinery, gearboxes, or automotive systems where combined loads are common.

Weighing just 2lb, it balances strength and manageability. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Description

Features

Application

Q&A

Product Parameters

Part Number 438W-432A
Brand TFL
Interchangeable Timken
Size 1.75" x 3.75" x 1.094"
Bore Dia 1.75"
Bore Dia Tolerance +0.005" to 0
Outer Dia 3.75"
Outer Dia Tolerance +0.001" to 0
Cone Width 1.1772"
Cone Width Tolerance +0.003" to -0.01
Cup Width 0.875"
Cup Width Tolerance +0.002" to -0.01
Width 1.094"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.03"
Cone Frontface Backing Diameter 2.01"
Cone Backface Backing Diameter 2.24"
Cup Frontface Backing Diameter 3.46"
Cup Backface Backing Diameter 3.31"
Cage Cone Frontface Clearance 0.05"
Cage Cone Backface Clearance 0.04"
Effective Center Location -0.36"
System of Measurement Inch
Type Bearing
Cone Part Number 438W
Cup Part Number 432A
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 435
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 28500 lbf
Static Radial Load 32400 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 7400 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3600 lbf
Lubrication Required
Temperature Range -30° to 110 °C
ABEC Rating ABEC-1
Radial Clearance Standard (Available in C3/C4/C5)
RoHS Compliant
REACH Compliant
Weight 2 lb

Features

How Is 438W-432A Bearing Engineered for Reliability?

438W-432A Bearing features chrome steel rings and rollers, providing robust resistance to combined loads.
Its dynamic radial load capacity reaches 28,500 lbf, ensuring dependable performance in heavy-duty applications.

The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in varied environments.

Designed for easy lubrication, 438W-432A Bearing simplifies maintenance while enhancing durability.
Its standard radial clearance options offer flexibility for different operational needs.

Application

Industrial Uses of 438W-432A Bearing
The 438W-432A Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 438W-432A Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. The inch sizing makes it a convenient choice for American-made vehicles.

For industrial conveyor systems, 438W-432A Bearing’s open design allows for easy lubrication, extending its service life in high-use scenarios. The standard radial clearance also accommodates slight misalignments during operation.

Where Is 438W-432A Bearing Used?
You’ll often find 438W-432A Bearing in mining equipment, where its robust design withstands heavy radial and thrust loads. The steel cage adds extra strength, making it suitable for rough conditions.

In manufacturing plants, this bearing supports machinery like presses and rollers, ensuring smooth operation. Its compatibility with Timken models simplifies replacements and maintenance.

Built for Heavy-Duty Use: 438W-432A Bearing
The 438W-432A Bearing excels in applications like forestry machinery, where its tapered rollers manage both radial and axial forces. Its temperature range also makes it adaptable to various climates.

For railway systems, this bearing’s durability and load capacity make it ideal for axle boxes. The ABEC-1 rating ensures consistent performance without unnecessary precision costs.

Automotive vs Aerospace: Applications of 438W-432A Bearing
In automotive settings, 438W-432A Bearing is trusted for drivetrain components due to its load-handling capabilities. The inch measurements align perfectly with standard US automotive specs.

While not typically used in aerospace, this bearing’s reliability makes it suitable for ground support equipment. Its chrome steel rollers offer a balance of strength and cost-effectiveness.