TS (Single Row Tapered Roller Bearings) (Imperial) 390-393AS

The 390-393AS is a single-row tapered roller bearing with a 2.25″ bore and 4.375″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 22200 lbf radially and 3970 lbf in thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures durability. 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 heavy-duty machinery like gearboxes or axles where combined loads are common.

Weighing 2.1 lb, 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 390-393AS
Brand TFL
Interchangeable Timken
Size 2.25" x 4.375" x 0.8661"
Bore Dia 2.25"
Bore Dia Tolerance +0.005" to 0
Outer Dia 4.375"
Outer Dia Tolerance +0.001" to 0
Cone Width 0.866"
Cone Width Tolerance +0.003" to -0.01
Cup Width 0.7411"
Cup Width Tolerance +0.002" to -0.01
Width 0.8661"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.09"
Cup Backface ToClear Radius 0.050"
Cone Frontface Backing Diameter 2.6"
Cone Backface Backing Diameter 2.76"
Cup Frontface Backing Diameter 4.15"
Cup Backface Backing Diameter 3.98"
Cage Cone Frontface Clearance 0.11"
Cage Cone Backface Clearance 0.05"
Effective Center Location -0.03"
System of Measurement Inch
Type Bearing
Cone Part Number 390
Cup Part Number 393AS
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 395
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 22200 lbf
Static Radial Load 28100 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 5760 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3970 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 2.1 lb

Features

How Is 390-393AS Bearing Engineered for Reliability?

390-393AS Bearing features chrome steel rings and rollers, ensuring strength and durability under combined loads.
Its dynamic radial load capacity reaches 22,200 lbf, making it suitable for heavy-duty applications.

The tapered roller design distributes loads evenly, reducing stress and extending service life.
With a standard radial clearance, it offers reliable performance in various operating conditions.

390-393AS Bearing operates within a temperature range of -30° to 110°C, adapting to diverse environments.
The steel cage maintains roller alignment, ensuring smooth operation and minimal wear.

This bearing requires lubrication, but its robust construction reduces maintenance frequency.
It meets ABEC-1 standards, balancing precision and cost-effectiveness for industrial use.

Application

Essential Roles of 390-393AS Bearing
In industrial settings, 390-393AS Bearing is commonly used in heavy machinery like conveyor systems and gearboxes, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.

Where Is 390-393AS Bearing Used?
You’ll often find 390-393AS Bearing in automotive applications, particularly in wheel hubs and differential systems. Its inch sizing makes it a reliable choice for vehicles requiring precise load distribution and long service life.

Built for Heavy-Duty Use: 390-393AS Bearing
For construction equipment, 390-393AS Bearing provides robust support in components like axles and drivetrains. The steel cage and chrome steel rollers offer excellent resistance to wear under high stress.

Automotive vs Aerospace: Applications of 390-393AS Bearing
In automotive systems, 390-393AS Bearing excels in transmissions and wheel assemblies, while its precision also suits aerospace landing gear components. The ABEC-1 rating ensures consistent performance across both sectors.

Practical Applications of 390-393AS Bearing
In agricultural machinery, 390-393AS Bearing is ideal for tractors and harvesters, where its ability to handle radial and thrust loads keeps operations smooth. The standard radial clearance allows for easy maintenance in field conditions.