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TS (Single Row Tapered Roller Bearings) (Imperial) 748-742A

TS (Single Row Tapered Roller Bearings) (Imperial) 748-742A

The 748-742A is a single-row tapered roller bearing with a 3.1496″ bore and 5.9045″ outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 71400 lbf radially and 10300 lbf thrust, suitable for demanding applications.

Its open design allows for 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, making it a practical choice for replacements. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 7.6 lb, it offers a robust build for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

The standard radial clearance and ABEC-1 rating provide reliable performance. Its tapered roller design ensures efficient load distribution, enhancing longevity in high-stress conditions.

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Product Parameters

  • Part Number 748-742A
  • Brand TFL
  • Interchangeable Timken
  • Size 3.1496" x 5.9045" x 1.7502"
  • Bore Dia 3.1496"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 5.9045"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.8375"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 1.4375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.7502"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.12"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 4.32"
  • Cone Backface Backing Diameter 3.78"
  • Cup Frontface Backing Diameter 5.63"
  • Cup Backface Backing Diameter 5.28"
  • Cage Cone Frontface Clearance 0.08"
  • Cage Cone Backface Clearance 0.05"
  • Effective Center Location -0.47"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 748
  • Cup Part Number 742A
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 745
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 71400 lbf
  • Static Radial Load 93800 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 18500 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 10300 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 7.6 lb

Features

Performance Features of 748-742A Bearing

748-742A Bearing is crafted from chrome steel for both rings and rollers, ensuring strength and durability.
Its dynamic radial load capacity reaches 71,400 lbf, making it suitable for heavy-duty applications.

The single-row tapered roller design efficiently handles combined loads with precision.
With a standard radial clearance, it offers reliable performance across various operating conditions.

748-742A Bearing operates within a temperature range of -30° to 110°C, adapting to diverse environments.
The steel cage maintains roller alignment, reducing friction and extending service life.

Installation is straightforward due to its open design and precise dimensional tolerances.
Regular lubrication ensures smooth operation and maintains its high load-bearing capabilities.

Application

Industrial Uses of 748-742A Bearing
748-742A Bearing is commonly used in heavy machinery like construction equipment and mining tools, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability in tough working conditions.

In automotive applications, 748-742A Bearing fits well in wheel hubs and differential systems, providing reliable performance under radial and thrust loads. Its imperial sizing makes it a preferred choice for American-made vehicles.

For industrial gearboxes, 748-742A Bearing’s open design allows for easy lubrication, extending service life in high-speed operations. The steel cage adds stability, reducing wear over time.

Where Is 748-742A Bearing Used?
748-742A Bearing is often found in agricultural machinery, supporting components like PTO shafts and harvesters. Its robust design handles varying loads and harsh environments.

The bearing also works well in conveyor systems, where its tapered rollers manage both radial and axial forces. Standard radial clearance options make it adaptable to different operational needs.

Built for Heavy-Duty Use: 748-742A Bearing
748-742A Bearing excels in forestry equipment, such as log splitters and sawmills, thanks to its high static radial load capacity. The chrome steel rollers resist deformation under pressure.

In material handling systems, this bearing’s single-row construction simplifies installation and maintenance. Its temperature range suits both indoor and outdoor applications.

Automotive vs Aerospace: Applications of 748-742A Bearing
In automotive settings, 748-742A Bearing supports drivetrain components, offering a balance of strength and precision. The ABEC-1 rating ensures consistent performance.

For aerospace ground equipment, the bearing’s standard lubrication requirements make it practical for frequent use. Its weight and dimensions are optimised for easy handling.

Q&A

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