TS (Single Row Tapered Roller Bearings) (Imperial) 3979-3926

The 3979-3926 is a single-row tapered roller bearing with a 2.25″ bore and 4.4375″ outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 31200 lbf radially and 5570 lbf thrust, suitable for demanding applications.

Its open design allows easy lubrication, while the steel cage ensures durability. 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 3.2 lb, it offers a balance of strength and manageable size. Compliant with RoHS and REACH standards for safe and reliable use.

Get A Free Quote

Description

Features

Application

Q&A

Product Parameters

Part Number 3979-3926
Brand TFL
Interchangeable Timken
Size 2.25" x 4.4375" x 1.3126"
Bore Dia 2.25"
Bore Dia Tolerance +0.005" to 0
Outer Dia 4.4375"
Outer Dia Tolerance +0.001" to 0
Cone Width 1.183"
Cone Width Tolerance +0.003" to -0.01
Cup Width 1.0625"
Cup Width Tolerance +0.002" to -0.01
Width 1.3126"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 2.6"
Cone Backface Backing Diameter 2.83"
Cup Frontface Backing Diameter 4.18"
Cup Backface Backing Diameter 3.86"
Cage Cone Frontface Clearance 0.08"
Cage Cone Backface Clearance 0.06"
Effective Center Location -0.18"
System of Measurement Inch
Type Bearing
Cone Part Number 3979
Cup Part Number 3926
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 3900
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 31200 lbf
Static Radial Load 43000 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 8090 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 5570 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 3.2 lb

Features

Performance Features of 3979-3926 Bearing

3979-3926 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 31,200 lbf, making it suitable for heavy-duty applications.
The steel cage ensures proper roller alignment, enhancing durability and reducing friction.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 3979-3926 Bearing Engineered for Reliability?

3979-3926 Bearing features precise cone and cup width tolerances, ensuring smooth operation under stress.
The tapered roller design distributes loads evenly, extending the bearing’s service life.
Its ABEC-1 rating guarantees consistent performance in industrial settings.
The standard radial clearance options provide flexibility for different applications.

Built for Durability: 3979-3926 Bearing

3979-3926 Bearing’s chrome steel construction resists wear, even in demanding environments.
The single-row design simplifies installation while maintaining high load capacity.
With a static radial load of 43,000 lbf, it handles heavy machinery with ease.
Proper lubrication ensures long-term reliability and reduced maintenance needs.

Application

Industrial Uses of 3979-3926 Bearing
3979-3926 Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 3979-3926 Bearing fits well in wheel hubs and differential systems, providing reliable performance under both radial and thrust loads. Its imperial sizing makes it a preferred choice for North American vehicle models.

For industrial conveyor systems, 3979-3926 Bearing’s open design allows for easy lubrication, extending service life in high-load scenarios. The steel cage adds stability, reducing wear during continuous operation.

Where Is 3979-3926 Bearing Used?
You’ll often find 3979-3926 Bearing in agricultural machinery, like tractors and harvesters, where its robust design withstands rough conditions. The tapered rollers distribute loads evenly, preventing premature failure.

In power transmission systems, 3979-3926 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: 3979-3926 Bearing
3979-3926 Bearing excels in forestry equipment, such as log splitters and sawmills, thanks to its high static radial load capacity. The chrome steel rollers resist deformation under extreme pressure.

For railway applications, 3979-3926 Bearing’s effective center location helps maintain alignment in bogies and axles. The standard radial clearance accommodates thermal expansion during long-distance travel.

Automotive vs Aerospace: Applications of 3979-3926 Bearing
In automotive settings, 3979-3926 Bearing is ideal for truck drivetrains, handling both radial and thrust loads efficiently. Its imperial measurements simplify replacements in older vehicle models.

For aerospace ground support equipment, 3979-3926 Bearing’s temperature range suits outdoor use, from cold storage to engine testing areas. The steel cage ensures reliability in variable weather conditions.