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TS (Single Row Tapered Roller Bearings) (Imperial) 78238C-78551

TS (Single Row Tapered Roller Bearings) (Imperial) 78238C-78551

The 78238C-78551 is a single-row tapered roller bearing with a 2.375″ bore and 5.513″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 53200 lbf radial and 20400 lbf thrust, making it a robust choice for heavy-duty applications.

Its open design allows for easy lubrication, while the steel cage ensures durability under high stress. 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 use in industrial machinery, gearboxes, or automotive systems where combined loads are common.

Weighing 5.7 lb, it’s built to last while maintaining performance. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 78238C-78551
  • Brand TFL
  • Interchangeable Timken
  • Size 2.375" x 5.513" x 1.4375"
  • Bore Dia 2.375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 5.513"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.3085"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.926"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.4375"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.2"
  • Cup Backface ToClear Radius 0.090"
  • Cone Frontface Backing Diameter 3.05"
  • Cone Backface Backing Diameter 3.58"
  • Cup Frontface Backing Diameter 5.22"
  • Cup Backface Backing Diameter 4.61"
  • Cage Cone Frontface Clearance 0.21"
  • Cage Cone Backface Clearance 0.22"
  • Effective Center Location 0.33"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 78238C
  • Cup Part Number 78551
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 78000C
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 53200 lbf
  • Static Radial Load 52600 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 13800 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 20400 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 5.7 lb

Features

Performance Features of 78238C-78551 Bearing

78238C-78551 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 53,200 lbf, ensuring reliable operation in tough conditions.

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

78238C-78551 Bearing’s tapered roller design provides efficient load distribution.
Its standard radial clearance options allow for flexibility in different applications.

The open seal type simplifies maintenance while ensuring smooth operation.
Weighing just 5.7 lb, it balances durability with manageable size.

Application

Industrial Uses of 78238C-78551 Bearing
78238C-78551 Bearing is commonly used in heavy machinery, such as construction equipment and mining gear, where its tapered roller design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability even in demanding environments.

Where Is 78238C-78551 Bearing Used?
In automotive applications, 78238C-78551 Bearing supports wheel hubs and drivetrain components, providing reliable performance under varying loads. Its inch sizing makes it a fit for many North American vehicle models.

Built for Heavy-Duty Use: 78238C-78551 Bearing
78238C-78551 Bearing excels in industrial fans and pumps, where its open design allows for easy lubrication and maintenance. The steel cage adds strength, making it suitable for continuous operation.

Automotive vs Aerospace: Applications of 78238C-78551 Bearing
While 78238C-78551 Bearing is popular in trucks and off-road vehicles for its load capacity, it also finds use in aerospace ground equipment. Its ABEC-1 rating ensures consistent performance in precision applications.

Perfect Fit for Automation: 78238C-78551 Bearing
78238C-78551 Bearing is ideal for conveyor systems in automated factories, where its tapered rollers reduce friction. The standard radial clearance option makes it versatile for various industrial setups.

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