TS (Single Row Tapered Roller Bearings) (Imperial) 387AS-383X

The 387AS-383X is a single-row tapered roller bearing with a 2.25″ bore and 3.937″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 24200 lbf radially and 3810 lbf thrust, suitable for demanding applications.

Its open design allows easy lubrication, while the steel cage ensures reliable performance. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, making it a practical choice for replacements. Ideal for heavy-duty machinery or automotive systems where combined loads are common.

Weighing 1.7 lb, it’s sturdy yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Description

Features

Application

Q&A

Product Parameters

Part Number 387AS-383X
Brand TFL
Interchangeable Timken
Size 2.25" x 3.937" x 1.0001"
Bore Dia 2.25"
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 0.875"
Cup Width Tolerance +0.002" to -0.01
Width 1.0001"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.2"
Cup Backface ToClear Radius 0.050"
Cone Frontface Backing Diameter 2.48"
Cone Backface Backing Diameter 2.87"
Cup Frontface Backing Diameter 3.68"
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 387AS
Cup Part Number 383X
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 1.7 lb

Features

How Is 387AS-383X Bearing Engineered for Reliability?

387AS-383X Bearing features chrome steel rings and rollers, ensuring strength and durability under combined loads.
Its dynamic radial load capacity reaches 24,200 lbf, making it suitable for 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 various conditions.

Structural Advantages of 387AS-383X Bearing

387AS-383X Bearing’s tapered roller design efficiently handles both radial and thrust loads.
The precise cone and cup width tolerances ensure smooth operation and easy installation.
Its standard radial clearance options provide flexibility for different application needs.
The open seal type allows for easy lubrication, enhancing performance and longevity.

Why Choose 387AS-383X Bearing for Precision Tasks?

387AS-383X Bearing’s ABEC-1 rating ensures consistent performance in precision applications.
The effective center location design improves load distribution, reducing wear.
Chrome steel construction offers excellent resistance to wear and fatigue.
With a dynamic thrust rating of 3,810 lbf, it handles demanding tasks with ease.

Application

Industrial Uses of 387AS-383X Bearing
387AS-383X 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 in tough working conditions.

Where Is 387AS-383X Bearing Used?
You’ll often find 387AS-383X Bearing in automotive applications like truck wheel hubs, where its ability to manage radial and thrust loads is crucial. The inch sizing makes it a good fit for North American vehicle designs.

Built for Heavy-Duty Use: 387AS-383X Bearing
387AS-383X Bearing excels in industrial fans and pumps, thanks to its robust steel cage and high dynamic load capacity. Its open design allows for easy lubrication, extending service life in demanding environments.

Automotive vs Aerospace: Applications of 387AS-383X Bearing
In automotive settings, 387AS-383X Bearing supports drivetrain components, while in aerospace, its precision fits auxiliary systems. The ABEC-1 rating ensures reliable performance across both sectors.

Essential Roles of 387AS-383X Bearing
387AS-383X Bearing is a go-to for conveyor systems, where its tapered rollers handle heavy loads smoothly. The standard radial clearance offers flexibility for various installation requirements.