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

The 387W-383A 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 thrust, making it versatile for various applications.

Its open design allows for 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 sustainable use.

The standard radial clearance and ABEC-1 rating make it suitable for general precision needs. Its tapered roller design ensures efficient load distribution and long service life.

Perfect for applications requiring consistent performance under radial and thrust loads, such as gearboxes or wheel hubs. The chrome steel construction resists wear, even in demanding conditions.

Easy to install and maintain, this bearing is a practical choice for engineers and maintenance teams alike. Its dimensions and tolerances ensure a precise fit in most standard setups.

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Description

Features

Application

Q&A

Product Parameters

Part Number 387W-383A
Brand TFL
Interchangeable Timken
Size 2.25" x 3.937" x 0.8269"
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 0.7018"
Cup Width Tolerance +0.002" to -0.01
Width 0.8269"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.09"
Cup Backface ToClear Radius 0.08"
Cone Frontface Backing Diameter 2.44"
Cone Backface Backing Diameter 2.6"
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 387W
Cup Part Number 383A
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

Performance Features of 387W-383A Bearing

387W-383A Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 24,200 lbf, making it suitable for heavy-duty applications.

The single-row tapered roller design ensures smooth operation and efficient load distribution.
With a standard radial clearance, it provides flexibility for various industrial uses.

387W-383A Bearing operates within a temperature range of -30° to 110°C, ensuring reliability in diverse conditions.
The steel cage maintains roller alignment, reducing wear and extending service life.

This bearing requires lubrication, which helps maintain its performance over time.
Its ABEC-1 rating ensures consistent precision for general industrial applications.

Application

Industrial Uses of 387W-383A Bearing
387W-383A 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, 387W-383A Bearing fits well in wheel hubs and differential systems, providing reliable performance under radial and thrust loads. Its inch sizing makes it compatible with many North American vehicle models.

For industrial conveyor systems, 387W-383A Bearing’s open design allows for easy lubrication, extending service life in high-load scenarios. The steel cage adds stability, making it a solid choice for continuous operation.

Where Is 387W-383A Bearing Used?
You’ll often find 387W-383A Bearing in mining equipment, where its robust design handles harsh conditions. The tapered rollers distribute loads evenly, reducing wear over time.

In power transmission systems, 387W-383A Bearing supports shafts and gears, ensuring smooth rotation under heavy loads. Its ABEC-1 rating balances precision and cost-effectiveness for general industrial use.

Built for Heavy-Duty Use: 387W-383A Bearing
387W-383A Bearing excels in forestry machinery, where its combined load capacity handles unpredictable forces. The standard radial clearance offers flexibility for various operating conditions.

For railway applications, 387W-383A Bearing’s temperature range (-30° to 110°C) ensures reliability in diverse climates. Its interchangeable design with Timken bearings simplifies maintenance and replacements.

Automotive vs Aerospace: Applications of 387W-383A Bearing
In automotive drivetrains, 387W-383A Bearing provides dependable performance for rear axles and transmissions. The dynamic radial load capacity of 24,200 lbf suits high-torque scenarios.

For aerospace ground support equipment, 387W-383A Bearing’s steel cage and chrome steel rollers offer durability without excessive weight. Its inch measurements align with many US-made machinery standards.