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TS (Single Row Tapered Roller Bearings) (Imperial) 28990-28920

TS (Single Row Tapered Roller Bearings) (Imperial) 28990-28920

The 28990-28920 is a single-row tapered roller bearing with a 2.44″ bore and 4″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 23800 lbf radially and 4500 lbf thrust, 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 1.7 lb, it balances strength and manageability. Compliant with RoHS and REACH standards for safe and eco-friendly use.

The standard radial clearance and ABEC-1 rating ensure consistent performance. Its tapered roller design provides efficient load distribution, reducing wear over time.

Suitable for high-demand environments like construction equipment or heavy-duty vehicles. The precise tolerances and robust construction make it a dependable choice for long-term use.

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Product Parameters

  • Part Number 28990-28920
  • Brand TFL
  • Interchangeable Timken
  • Size 2.44" x 4" x 0.9689"
  • Bore Dia 2.44"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.9688"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.7813"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.9689"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.080"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 2.68"
  • Cone Backface Backing Diameter 2.83"
  • Cup Frontface Backing Diameter 3.85"
  • Cup Backface Backing Diameter 3.54"
  • Cage Cone Frontface Clearance 0.09"
  • Cage Cone Backface Clearance 0.02"
  • Effective Center Location -0.07"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 28990
  • Cup Part Number 28920
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 28900
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 23800 lbf
  • Static Radial Load 33500 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 6180 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4500 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 1.7 lb

Features

Why Choose 28990-28920 Bearing for Combined Loads?

28990-28920 Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 23,800 lbf, making it suitable for heavy-duty applications.

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

The open design simplifies lubrication, ensuring smooth operation with minimal maintenance.
Its standard radial clearance options provide flexibility for different installation needs.

Application

Industrial Uses of 28990-28920 Bearing
In heavy machinery like construction equipment, 28990-28920 Bearing handles combined loads effortlessly, thanks to its tapered roller design. The chrome steel construction ensures durability even in tough working conditions.

Where Is 28990-28920 Bearing Used?
You’ll often spot 28990-28920 Bearing in agricultural gear, such as tractor transmissions, where its robust build handles high radial and thrust loads. The inch sizing makes it a go-to for older machinery still running on imperial measurements.

Built for Heavy-Duty Use: 28990-28920 Bearing
28990-28920 Bearing shines in mining applications, supporting conveyor systems that move heavy materials. Its open design allows for easy lubrication, extending service life in dusty environments.

Automotive vs Aerospace: Applications of 28990-28920 Bearing
In trucks, 28990-28920 Bearing supports wheel hubs, while in smaller aircraft, it aids in landing gear mechanisms. The ABEC-1 rating ensures reliable performance without over-engineering for less critical roles.

Perfect Fit for Automation: 28990-28920 Bearing
28990-28920 Bearing works well in automated assembly lines, where its tapered rollers manage varying load directions smoothly. The steel cage keeps everything aligned, even during rapid direction changes.

Q&A

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