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TS (Single Row Tapered Roller Bearings) (Imperial) 2878-2821

TS (Single Row Tapered Roller Bearings) (Imperial) 2878-2821

The 2878-2821 is a single-row tapered roller bearing with a 1.375″ bore and 2.875″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 16400 lbf radially and 2690 lbf thrust, making it versatile for various applications.

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 demanding environments.

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

Weighing just 1lb, it balances strength and portability. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 2878-2821
  • Brand TFL
  • Interchangeable Timken
  • Size 1.375" x 2.875" x 0.875"
  • Bore Dia 1.375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 2.875"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.9375"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.6875"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.875"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.03"
  • Cup Backface ToClear Radius 0.03"
  • Cone Frontface Backing Diameter 1.61"
  • Cone Backface Backing Diameter 1.65"
  • Cup Frontface Backing Diameter 2.72"
  • Cup Backface Backing Diameter 2.56"
  • Cage Cone Frontface Clearance 0.12"
  • Cage Cone Backface Clearance 0.03"
  • Effective Center Location -0.22"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 2878
  • Cup Part Number 2821
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 2800
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 16400 lbf
  • Static Radial Load 18800 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 4260 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 2690 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 lb

Features

Performance Features of 2878-2821 Bearing

2878-2821 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 16,400 lbf, making it suitable for heavy-duty applications.

The steel cage ensures proper roller alignment, reducing friction and enhancing durability.
With a standard radial clearance, it provides reliable performance across various operating conditions.

2878-2821 Bearing operates efficiently within a temperature range of -30° to 110°C.
Its tapered roller design ensures smooth handling of both radial and thrust loads.

The open seal type allows for easy lubrication, maintaining optimal performance.
Weighing just 1 lb, it balances strength and practicality in industrial settings.

Application

Industrial Uses of 2878-2821 Bearing
2878-2821 Bearing is commonly used in heavy machinery like construction equipment, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 2878-2821 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it a preferred choice for American vehicle models.

For industrial conveyor systems, 2878-2821 Bearing’s open design allows for easy lubrication, extending service life in high-use scenarios. The standard radial clearance offers flexibility for different operational needs.

Where Is 2878-2821 Bearing Used?
You’ll often find 2878-2821 Bearing in agricultural machinery, where its robust design handles rough conditions. The steel cage adds extra strength, making it suitable for heavy-duty tasks.

In mining equipment, 2878-2821 Bearing’s ability to manage radial and thrust loads makes it a reliable component. The ABEC-1 rating ensures consistent performance without overcomplicating precision needs.

Built for Heavy-Duty Use: 2878-2821 Bearing
2878-2821 Bearing excels in forestry machinery, where its tapered rollers distribute loads evenly. The chrome steel rollers resist wear, even in dusty or wet conditions.

For railway applications, 2878-2821 Bearing’s durability and standard radial clearance make it a practical choice. Its compatibility with Timken models simplifies replacements and maintenance.

Automotive vs Aerospace: Applications of 2878-2821 Bearing
In automotive systems, 2878-2821 Bearing supports drivetrain components, offering a balance of strength and precision. The inch measurements align with many US-made parts.

For aerospace ground equipment, 2878-2821 Bearing’s temperature range and load capacity suit auxiliary systems. Its steel cage ensures reliability without adding unnecessary weight.

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