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

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

The 78238-78551 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 45600 lbf radially and 17500 lbf thrust, making it versatile for heavy-duty use.

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 applications like truck axles or industrial gearboxes where combined loads are common.

Weighing 5.5 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 78238-78551
  • 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 3.1"
  • Cone Backface Backing Diameter 3.46"
  • Cup Frontface Backing Diameter 5.22"
  • Cup Backface Backing Diameter 4.61"
  • Cage Cone Frontface Clearance 0.2"
  • Cage Cone Backface Clearance 0.24"
  • Effective Center Location 0.31"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 78238
  • 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 78000
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 45600 lbf
  • Static Radial Load 43400 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 11800 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 17500 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 5.5 lb

Features

How Is 78238-78551 Bearing Engineered for Reliability?

78238-78551 Bearing features chrome steel rings and rollers, providing robust performance under combined loads.
Its dynamic radial load capacity reaches 45,600 lbf, making it suitable for heavy-duty applications.

The tapered roller design ensures even load distribution, reducing wear and extending service life.
With a temperature range of -30° to 110°C, it performs reliably in various operating conditions.

The steel cage maintains roller alignment, enhancing stability and reducing friction.
Standard radial clearance options allow for flexibility in different installation scenarios.

Application

Industrial Uses of 78238-78551 Bearing
78238-78551 Bearing is commonly used in heavy machinery like construction equipment and mining rigs, where its tapered roller design handles combined loads efficiently. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 78238-78551 Bearing fits well in wheel hubs and differential systems, providing reliable performance under radial and thrust loads. Its inch sizing makes it a go-to choice for American and British vehicle models.

For industrial gearboxes, 78238-78551 Bearing’s single-row design offers precise alignment and smooth operation. The steel cage adds extra strength, making it suitable for high-load scenarios.

Where Is 78238-78551 Bearing Used?
78238-78551 Bearing is often found in agricultural machinery, supporting components like PTO shafts and harvesters. Its robust design handles dirt and debris without compromising performance.

In conveyor systems, 78238-78551 Bearing ensures smooth movement of heavy loads. The open seal type allows for easy lubrication, extending its service life in continuous operation.

Built for Heavy-Duty Use: 78238-78551 Bearing
78238-78551 Bearing excels in forestry equipment, where its tapered rollers manage uneven loads. The standard radial clearance option makes it adaptable to various operating conditions.

For railway applications, 78238-78551 Bearing provides stability in axle boxes. Its ABEC-1 rating ensures consistent performance at moderate speeds and loads.

Automotive vs Aerospace: Applications of 78238-78551 Bearing
78238-78551 Bearing is a staple in truck transmissions, offering reliable load handling. In aerospace, it’s used in auxiliary systems where its inch measurements align with imperial standards.

For industrial pumps, 78238-78551 Bearing’s chrome steel rollers resist wear. The temperature range of -30° to 110°C makes it versatile for different climates.

Q&A

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