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TS (Single Row Tapered Roller Bearings) (Imperial) 3878-3822RB

TS (Single Row Tapered Roller Bearings) (Imperial) 3878-3822RB

The 3878-3822RB is a single-row tapered roller bearing with a 1.4375″ bore and 3.4688″ outer diameter, made from sturdy chrome steel. It handles combined loads up to 27900 lbf radially and 4980 lbf in thrust, suitable for demanding applications.

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

This model is interchangeable with Timken bearings, making it a practical choice for replacements. Ideal for use in gearboxes, wheel hubs, or industrial machinery where combined loads are common.

Weighing 2.1 lb, it offers a robust build for its size. Compliant with RoHS and REACH standards, it meets environmental and safety requirements.

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Product Parameters

  • Part Number 3878-3822RB
  • Brand TFL
  • Interchangeable Timken
  • Size 1.4375" x 3.4688" x 1.1876"
  • Bore Dia 1.4375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.4688"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.1875"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.1876"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.03"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 1.85"
  • Cone Backface Backing Diameter 1.89"
  • Cup Frontface Backing Diameter 3.27"
  • Cup Backface Backing Diameter 2.91"
  • Cage Cone Frontface Clearance 0.11"
  • Cage Cone Backface Clearance 0.04"
  • Effective Center Location -0.32"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3878
  • Cup Part Number 3822RB
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3800
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 27900 lbf
  • Static Radial Load 33200 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 7240 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4980 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 2.1 lb

Features

What Makes 3878-3822RB Bearing Suitable for Combined Loads?

3878-3822RB Bearing is crafted with chrome steel rings and rollers, offering robust performance under both radial and thrust loads.
Its dynamic radial load capacity reaches 27,900 lbf, ensuring reliability in demanding applications.

The single-row tapered roller design provides effective load distribution, enhancing durability.
With a standard radial clearance, it accommodates various operational conditions.

3878-3822RB Bearing operates within a temperature range of -30° to 110°C, suitable for diverse environments.
Its steel cage maintains roller alignment, reducing wear and extending service life.

The open seal design simplifies maintenance while ensuring efficient lubrication.
This bearing is interchangeable with Timken models, offering flexibility in replacements.

Application

Industrial Uses of 3878-3822RB Bearing
3878-3822RB Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in tough working conditions.

Where Is 3878-3822RB Bearing Used?
You’ll often find 3878-3822RB Bearing in automotive applications, particularly in wheel hubs and differential systems. Its imperial sizing makes it a good fit for older or custom-built vehicles.

Built for Heavy-Duty Use: 3878-3822RB Bearing
3878-3822RB Bearing excels in industrial fans and pumps, where its open design allows for easy lubrication. The steel cage adds extra strength, making it reliable for continuous operation.

Automotive vs Aerospace: Applications of 3878-3822RB Bearing
In automotive settings, 3878-3822RB Bearing supports high-load components like axles. While not typically used in aerospace, its precision makes it suitable for ground support equipment.

Perfect Fit for Automation: 3878-3822RB Bearing
3878-3822RB Bearing works well in conveyor systems and automated assembly lines. Its tapered rollers provide smooth motion, reducing wear over time.

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