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TS (Single Row Tapered Roller Bearings) (Imperial) 3955-3920

TS (Single Row Tapered Roller Bearings) (Imperial) 3955-3920

The 3955-3920 is a single-row tapered roller bearing with a 2.5″ bore and 4.4375″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 31200 lbf radially and 5570 lbf in thrust, making it versatile for tough conditions.

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

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

Weighing 3 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for most industrial uses.

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Product Parameters

  • Part Number 3955-3920
  • Brand TFL
  • Interchangeable Timken
  • Size 2.5" x 4.4375" x 1.4376"
  • Bore Dia 2.5"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.4375"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.433"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.4376"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 2.8"
  • Cone Backface Backing Diameter 3.03"
  • Cup Frontface Backing Diameter 4.18"
  • Cup Backface Backing Diameter 3.90"
  • Cage Cone Frontface Clearance 0.08"
  • Cage Cone Backface Clearance 0.31"
  • Effective Center Location -0.43"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3955
  • 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 3 lb

Features

How Is 3955-3920 Bearing Engineered for Reliability?

3955-3920 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 31,200 lbf, ensuring dependable performance in tough conditions.

The steel cage maintains proper roller alignment, reducing friction and extending service life.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

3955-3920 Bearing’s standard radial clearance allows for smooth operation under different load conditions.
Its ABEC-1 rating ensures consistent precision for industrial applications.

Application

Industrial Uses of 3955-3920 Bearing
The 3955-3920 Bearing is widely 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, 3955-3920 Bearing fits well in wheel hubs and differential systems, providing reliable performance under both radial and thrust loads. The imperial sizing makes it a convenient choice for North American vehicle models.

For industrial conveyor systems, 3955-3920 Bearing’s open design allows for easy lubrication, extending service life in high-load scenarios. The steel cage adds extra strength, making it suitable for continuous operation.

Where Is 3955-3920 Bearing Used?
You’ll often find 3955-3920 Bearing in mining equipment, where its robust design handles harsh conditions. The tapered rollers distribute loads evenly, reducing wear over time.

In railway applications, 3955-3920 Bearing supports axle boxes, ensuring smooth movement under heavy loads. Its ABEC-1 rating provides a balance of precision and affordability for these uses.

Built for Heavy-Duty Use: 3955-3920 Bearing
The 3955-3920 Bearing excels in forestry machinery, where its combined load capacity handles unpredictable stresses. The standard radial clearance offers flexibility for various operating conditions.

In metalworking equipment, 3955-3920 Bearing’s temperature range (-30° to 110°C) ensures stable performance. Its compatibility with Timken models makes replacement straightforward.

Automotive vs Aerospace: Applications of 3955-3920 Bearing
In automotive settings, 3955-3920 Bearing is common in truck transmissions, where its dynamic load rating suits frequent gear shifts. The inch measurements align with many US-made components.

For aerospace ground support equipment, 3955-3920 Bearing’s steel cage provides reliability without excessive weight. However, its ABEC-1 precision is typically reserved for non-critical aerospace applications.

Q&A

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