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

The 387A-383 is a single-row tapered roller bearing with a 2.25″ bore and 3.937″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 24200 lbf radially and 3810 lbf in 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 1.5 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Description

Features

Application

Q&A

Product Parameters

Part Number 387A-383
Brand TFL
Interchangeable Timken
Size 2.25" x 3.937" x 0.8268"
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 0.8268"
Cup Width Tolerance +0.002" to -0.01
Width 0.8268"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.08"
Cone Frontface Backing Diameter 2.48"
Cone Backface Backing Diameter 2.76"
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 387A
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 1.500 lb

Features

How Is 387A-383 Bearing Engineered for Reliability?

387A-383 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 demanding industrial applications.

The tapered roller design of 387A-383 Bearing provides effective load distribution, reducing wear over time.
With a standard radial clearance, it offers reliable performance in various operating conditions.

387A-383 Bearing operates within a temperature range of -30° to 110°C, ensuring stability in diverse environments.
The steel cage maintains roller alignment, contributing to smooth and efficient operation.

Application

Industrial Uses of 387A-383 Bearing
387A-383 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in tough working conditions.

In automotive applications, 387A-383 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it a preferred choice for American and British vehicle models.

For industrial conveyor systems, 387A-383 Bearing’s open design allows for easy lubrication, extending its service life in high-use environments. The steel cage adds extra strength, making it suitable for continuous operation.

Where Is 387A-383 Bearing Used?
You’ll often find 387A-383 Bearing in mining equipment, where its ability to handle radial and thrust loads is crucial. The standard radial clearance ensures smooth operation even under heavy stress.

In railway applications, 387A-383 Bearing supports axle boxes, offering stability and reducing wear over time. Its compatibility with Timken models makes it a versatile option for maintenance and replacements.

Built for Heavy-Duty Use: 387A-383 Bearing
387A-383 Bearing excels in forestry machinery, where its robust design withstands shocks and vibrations. The ABEC-1 rating ensures consistent performance without unnecessary precision costs.

For pump systems, 387A-383 Bearing’s tapered rollers manage both radial and axial forces efficiently. The temperature range of -30° to 110°C makes it adaptable to various operating conditions.

Automotive vs Aerospace: Applications of 387A-383 Bearing
In automotive settings, 387A-383 Bearing is ideal for drivetrain components, balancing load capacity and longevity. Its inch measurements align with many classic and modern vehicle designs.

While not typically used in aerospace, 387A-383 Bearing finds its place in ground support equipment, where reliability and ease of maintenance are key. The steel cage and chrome steel rollers ensure dependable performance.