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TS (Single Row Tapered Roller Bearings) (Imperial) 3977-3925

TS (Single Row Tapered Roller Bearings) (Imperial) 3977-3925

The 3977-3925 is a single-row tapered roller bearing with a 2.36″ bore and 4.44″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 31200 lbf radially and 5570 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 2.9 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 3977-3925
  • Brand TFL
  • Interchangeable Timken
  • Size 2.3622" x 4.4375" x 1.1875"
  • Bore Dia 2.3622"
  • 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 0.03"
  • Cone Frontface Backing Diameter 2.68"
  • Cone Backface Backing Diameter 2.91"
  • Cup Frontface Backing Diameter 4.18"
  • Cup Backface Backing Diameter 3.98"
  • 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 3977
  • Cup Part Number 3925
  • 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 2.9 lb

Features

Performance Features of 3977-3925 Bearing

3977-3925 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 wear.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Does 3977-3925 Bearing Reduce Friction?

3977-3925 Bearing’s tapered roller design minimises friction, ensuring smooth operation under combined loads.
The chrome steel construction provides excellent wear resistance, extending the bearing’s service life.
Its effective centre location of -0.18″ helps maintain stability during operation.
Proper lubrication further reduces friction, enhancing overall performance.

Engineered for Precision: 3977-3925 Bearing

3977-3925 Bearing features precise dimensions, with bore and outer diameter tolerances ensuring accurate fit.
The ABEC-1 rating confirms its reliability for applications requiring consistent performance.
Its standard radial clearance options (C3/C4/C5) allow for flexibility in different operating conditions.
The bearing’s design balances load capacity and precision, making it versatile for various uses.

Steel vs Ceramic Bearings: Strengths of 3977-3925 Bearing

3977-3925 Bearing’s chrome steel construction provides durability and cost-effectiveness compared to ceramic alternatives.
It handles dynamic radial loads up to 31,200 lbf, making it robust for industrial applications.
The steel cage and rollers ensure reliable performance without the brittleness of ceramic materials.
Its temperature tolerance and standard lubrication needs make it practical for everyday use.

Why Choose 3977-3925 Bearing for Precision Tasks?

3977-3925 Bearing offers precise dimensions and tolerances, essential for accurate machinery operation.
The tapered roller design ensures even load distribution, reducing stress on components.
With a static radial load capacity of 43,000 lbf, it provides stability in demanding conditions.
Its compatibility with standard lubrication systems simplifies maintenance and ensures long-term reliability.

Application

Industrial Uses of 3977-3925 Bearing
The 3977-3925 Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability even in demanding environments.

Where Is 3977-3925 Bearing Used?
You’ll often find the 3977-3925 Bearing in automotive applications like truck wheel hubs, where its ability to manage radial and thrust loads is essential. The inch sizing makes it a good fit for North American vehicle designs.

Built for Heavy-Duty Use: 3977-3925 Bearing
In industrial gearboxes, the 3977-3925 Bearing provides reliable performance thanks to its robust steel cage and precise tolerances. Its open design simplifies lubrication, which is key for long-term maintenance.

Automotive vs Aerospace: Applications of 3977-3925 Bearing
While the 3977-3925 Bearing excels in automotive systems like differentials, it’s also suitable for aerospace ground support equipment. Its ABEC-1 rating balances precision and cost for these varied uses.

Perfect Fit for Automation: 3977-3925 Bearing
The 3977-3925 Bearing works well in automated conveyor systems, where its tapered rollers ensure smooth motion under heavy loads. The standard radial clearance offers flexibility for different operational needs.

Q&A

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