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TS (Single Row Tapered Roller Bearings) (Imperial) 3984-3920

TS (Single Row Tapered Roller Bearings) (Imperial) 3984-3920

The 3984-3920 is a single-row tapered roller bearing with a 2.625″ bore and 4.4375″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 31200 lbf radially and 5570 lbf thrust, making it versatile for heavy-duty use.

Its open design allows for easy lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures from -30°C to 110°C, suitable for various industrial conditions.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for applications like gearboxes, axles, or machinery where combined loads are common.

Weighing 2.6 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for diverse environments.

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Product Parameters

  • Part Number 3984-3920
  • Brand TFL
  • Interchangeable Timken
  • Size 2.625" x 4.4375" x 1.1875"
  • Bore Dia 2.625"
  • 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 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.1875"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 3.54"
  • Cone Backface Backing Diameter 3.15"
  • Cup Frontface Backing Diameter 4.18"
  • Cup Backface Backing Diameter 3.90"
  • 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 3984
  • Cup Part Number 3920
  • 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 2.6 lb

Features

Performance Features of 3984-3920 Bearing

3984-3920 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, reducing friction and extending operational life.
With a standard radial clearance, it provides reliable performance in various conditions.

3984-3920 Bearing operates efficiently within a temperature range of -30° to 110°C.
Its tapered roller design handles both radial and thrust loads with ease.

The open seal type allows for easy lubrication, ensuring smooth operation.
Weighing just 2.6 lb, it balances durability and practicality in industrial settings.

Application

Industrial Uses of 3984-3920 Bearing
The 3984-3920 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 3984-3920 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. The imperial sizing makes it a convenient choice for North American vehicle models.

For industrial conveyor systems, 3984-3920 Bearing’s open design allows for easy lubrication, extending its service life in high-use scenarios. The steel cage adds extra strength, making it suitable for continuous operation.

Where Is 3984-3920 Bearing Used?
You’ll often find 3984-3920 Bearing in mining equipment, where its robust design handles heavy radial and thrust loads. The tapered rollers distribute stress evenly, reducing wear over time.

In manufacturing plants, 3984-3920 Bearing supports machinery like presses and gearboxes, ensuring smooth operation. Its ABEC-1 rating provides a balance of precision and affordability for general industrial use.

Built for Heavy-Duty Use: 3984-3920 Bearing
The 3984-3920 Bearing excels in applications like forklifts and cranes, where its high static load capacity is crucial. The chrome steel rollers and rings offer excellent resistance to wear.

For railway applications, 3984-3920 Bearing’s tapered design accommodates both radial and axial forces, making it ideal for freight car axles. Its standard radial clearance ensures consistent performance under load.

Automotive vs Aerospace: Applications of 3984-3920 Bearing
In automotive systems, 3984-3920 Bearing is often used in drivetrains, where its combined load capacity is essential. The imperial sizing simplifies integration with existing designs.

For aerospace ground equipment, 3984-3920 Bearing provides reliable support in landing gear test rigs. Its temperature range suits both indoor and outdoor use.

Q&A

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