TS (Single Row Tapered Roller Bearings) (Imperial) 389A-383

The 389A-383 is a single-row tapered roller bearing with a 2.125″ bore and 3.937″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 24200 lbf radially and 3810 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 ranging from -30°C to 110°C.

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

Weighing 1.6 lb, it’s robust yet manageable for its size. 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 389A-383
Brand TFL
Interchangeable Timken
Size 2.125" x 3.937" x 0.8268"
Bore Dia 2.125"
Bore Dia Tolerance +0.005" to 0
Outer Dia 3.937"
Outer Dia Tolerance +0.001" to 0
Cone Width 0.864"
Cone Width Tolerance +0.003" to -0.01
Cup Width 0.8268"
Cup Width Tolerance +0.002" to -0.01
Width 0.8268"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.03"
Cup Backface ToClear Radius 0.08"
Cone Frontface Backing Diameter 2.36"
Cone Backface Backing Diameter 2.4"
Cup Frontface Backing Diameter 3.70"
Cup Backface Backing Diameter 3.50"
Cage Cone Frontface Clearance 0.11"
Cage Cone Backface Clearance 0.03"
Effective Center Location -0.12"
System of Measurement Inch
Type Bearing
Cone Part Number 389A
Cup Part Number 383
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 385
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 24200 lbf
Static Radial Load 24100 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 6280 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3810 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 1.6 lb

Features

How Is 389A-383 Bearing Engineered for Reliability?

389A-383 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 24,200 lbf, ensuring steady performance in demanding conditions.

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

389A-383 Bearing’s standard radial clearance options provide flexibility for different applications.
Its tapered roller design efficiently handles both radial and thrust loads for versatile use.

Application

Industrial Uses of 389A-383 Bearing
389A-383 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 389A-383 Bearing fits well in wheel hubs and differential systems, providing reliable performance under both radial and thrust loads. Its inch sizing makes it a preferred choice for American-made vehicles.

For industrial conveyor systems, 389A-383 Bearing’s open design allows for easy lubrication, extending service life in high-load scenarios. The steel cage adds stability, making it suitable for continuous operation.

Where Is 389A-383 Bearing Used?
You’ll often find 389A-383 Bearing in mining equipment, where its robust design withstands harsh conditions. The tapered rollers distribute loads evenly, reducing wear over time.

In power transmission systems, 389A-383 Bearing supports shafts and gears, ensuring smooth rotation. Its ABEC-1 rating provides a balance of precision and affordability for general industrial use.

Built for Heavy-Duty Use: 389A-383 Bearing
389A-383 Bearing excels in applications like forklifts and cranes, where strength and reliability are key. The standard radial clearance offers flexibility for various load conditions.

Its compatibility with Timken models makes 389A-383 Bearing a versatile option for maintenance and replacements. The steel cage and chrome steel rollers ensure long-lasting performance.

Automotive vs Aerospace: Applications of 389A-383 Bearing
In automotive settings, 389A-383 Bearing handles wheel and axle loads with ease, thanks to its tapered roller design. The inch measurements align perfectly with imperial system requirements.

For aerospace ground equipment, 389A-383 Bearing provides dependable support in landing gear servicing tools. Its temperature range suits both indoor and outdoor use.