TS (Single Row Tapered Roller Bearings) (Imperial) 3878A-3822RB

The 3878A-3822RB is a single-row tapered roller bearing with a 1.4375″ bore and 3.4688″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 27900 lbf radially and 4980 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 2.1 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

The standard radial clearance ensures easy installation, while the ABEC-1 rating guarantees consistent performance. Suitable for applications requiring reliable load handling and long service life.

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Description

Features

Application

Q&A

Product Parameters

Part Number 3878A-3822RB
Brand TFL
Interchangeable Timken
Size 1.4375" x 3.4688" x 1.1876"
Bore Dia 1.4375"
Bore Dia Tolerance +0.005" to 0
Outer Dia 3.4688"
Outer Dia Tolerance +0.001" to 0
Cone Width 1.1875"
Cone Width Tolerance +0.003" to -0.01
Cup Width 0.9375"
Cup Width Tolerance +0.002" to -0.01
Width 1.1876"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 1.85"
Cone Backface Backing Diameter 2.13"
Cup Frontface Backing Diameter 3.27"
Cup Backface Backing Diameter 2.91"
Cage Cone Frontface Clearance 0.11"
Cage Cone Backface Clearance 0.04"
Effective Center Location -0.32"
System of Measurement Inch
Type Bearing
Cone Part Number 3878A
Cup Part Number 3822RB
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 3800
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 27900 lbf
Static Radial Load 33200 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 7240 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4980 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

Performance Features of 3878A-3822RB Bearing

3878A-3822RB Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 27,900 lbf, ensuring reliable performance in various applications.

The steel cage maintains proper roller alignment, reducing friction and wear.
With a temperature range of -30° to 110°C, it performs well in diverse operating conditions.

3878A-3822RB Bearing requires lubrication for optimal performance and longevity.
The standard radial clearance provides flexibility for different installation needs.

Application

Industrial Uses of 3878A-3822RB Bearing
3878A-3822RB 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 tough working conditions.

In automotive applications, 3878A-3822RB Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a straightforward replacement for Timken bearings in many vehicles.

For industrial conveyor systems, 3878A-3822RB Bearing offers smooth operation and easy maintenance due to its open design. The standard radial clearance allows for flexibility in different temperature environments.

Where Is 3878A-3822RB Bearing Used?
3878A-3822RB Bearing is often found in mining equipment, where its robust design withstands high radial and thrust loads. The steel cage adds extra strength, making it suitable for demanding applications.

In manufacturing plants, 3878A-3822RB Bearing supports machinery like presses and rollers, ensuring consistent performance. Its ABEC-1 rating provides a balance of precision and affordability for general industrial use.

Built for Heavy-Duty Use: 3878A-3822RB Bearing
3878A-3822RB Bearing excels in applications like gearboxes and power transmission systems, where combined loads are common. The tapered rollers distribute stress evenly, extending the bearing’s service life.

For forestry equipment, 3878A-3822RB Bearing handles shocks and vibrations reliably. Its temperature range of -30° to 110°C ensures performance in various climates.

Automotive vs Aerospace: Applications of 3878A-3822RB Bearing
In automotive systems, 3878A-3822RB Bearing is ideal for drivetrain components, offering durability and ease of maintenance. Its compatibility with Timken bearings simplifies replacements.

For aerospace ground equipment, 3878A-3822RB Bearing provides dependable performance in load-handling tools. The chrome steel rollers ensure smooth operation under frequent use.