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TS (Single Row Tapered Roller Bearings) (Imperial) 3779-3720

TS (Single Row Tapered Roller Bearings) (Imperial) 3779-3720

The 3779-3720 is a single-row tapered roller bearing with a 1.875″ bore and 3.6718″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 27500 lbf radially and 4120 lbf thrust-wise, making it versatile for various applications.

Its open design allows 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 just 2lb, it balances strength and portability. Compliant with RoHS and REACH standards for safe and eco-friendly use.

The standard radial clearance and ABEC-1 rating make it a practical choice for general engineering needs. Its tapered rollers provide efficient load distribution for long-lasting performance.

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Product Parameters

  • Part Number 3779-3720
  • Brand TFL
  • Interchangeable Timken
  • Size 1.875" x 3.6718" x 1.1875"
  • Bore Dia 1.875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.6718"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.193"
  • 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 2.17"
  • Cone Backface Backing Diameter 2.4"
  • Cup Frontface Backing Diameter 3.50"
  • Cup Backface Backing Diameter 3.23"
  • Cage Cone Frontface Clearance 0.06"
  • Cage Cone Backface Clearance 0.06"
  • Effective Center Location -0.32"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3779
  • Cup Part Number 3720
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3700
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 27500 lbf
  • Static Radial Load 34300 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 7120 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4120 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 lb

Features

Performance Features of 3779-3720 Bearing

3779-3720 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 27,500 lbf, making it suitable for demanding industrial applications.
The steel cage ensures proper roller alignment, reducing friction and enhancing durability.
With a temperature range of -30° to 110°C, it performs reliably in various operating conditions.

How Does 3779-3720 Bearing Resist Wear?

3779-3720 Bearing’s chrome steel construction provides excellent wear resistance, even under heavy loads.
The tapered roller design distributes stress evenly, extending the bearing’s service life.
Its standard radial clearance options allow for flexibility in different applications.
Regular lubrication ensures smooth operation and further reduces wear over time.

Engineered for Precision: 3779-3720 Bearing

3779-3720 Bearing features precise dimensional tolerances, ensuring accurate performance in machinery.
The single row tapered roller design handles both radial and thrust loads efficiently.
With an ABEC-1 rating, it maintains consistent quality for industrial use.
The bearing’s effective center location of -0.32″ contributes to stable operation.

Steel vs Ceramic Bearings: Strengths of 3779-3720 Bearing

3779-3720 Bearing uses chrome steel for both rings and rollers, providing excellent strength and durability.
This material choice makes it more cost-effective than ceramic bearings for many industrial applications.
The steel construction handles high static radial loads up to 34,300 lbf reliably.
Its standard lubrication requirements make maintenance straightforward compared to some specialty bearings.

Application

Industrial Uses of 3779-3720 Bearing
The 3779-3720 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability in demanding environments.

Where Is 3779-3720 Bearing Used?
You’ll often find the 3779-3720 Bearing in automotive applications like wheel hubs and differentials, thanks to its ability to manage both radial and thrust loads. The inch sizing makes it a fit for many North American vehicle models.

Built for Heavy-Duty Use: 3779-3720 Bearing
In industrial settings, the 3779-3720 Bearing excels in conveyor systems and gearboxes, where its open design allows for easy lubrication. The steel cage adds robustness, making it reliable for long-term use.

Automotive vs Aerospace: Applications of 3779-3720 Bearing
While the 3779-3720 Bearing is popular in automotive systems like axles, it’s also suitable for aerospace ground support equipment. Its ABEC-1 rating ensures consistent performance without over-engineering.

Perfect Fit for Automation: 3779-3720 Bearing
The 3779-3720 Bearing works well in automated machinery, such as assembly lines, where precise load handling is needed. Its standard radial clearance offers flexibility for various operational conditions.

Q&A

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