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

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

The 748-742X is a single-row tapered roller bearing with a 3.15″ bore and 5.91″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 71,400 lbf radially and 10,300 lbf thrust, making it versatile for heavy-duty use.

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 various industrial environments.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for applications like truck axles or heavy machinery where robust performance is needed.

Weighing 7.7 lb, it’s built to last while meeting RoHS and REACH standards for safety and compliance. The standard radial clearance ensures easy installation and maintenance.

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Product Parameters

  • Part Number 748-742X
  • Brand TFL
  • Interchangeable Timken
  • Size 3.1496" x 5.909" x 1.7502"
  • Bore Dia 3.1496"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 5.909"
  • 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 742X
  • 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 7.7 lb

Features

Performance Features of 748-742X Bearing

748-742X Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 71,400 lbf, ensuring reliable performance in heavy-duty applications.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in various environments.

How Is 748-742X Bearing Engineered for Reliability?

748-742X Bearing features precise cone and cup width tolerances, ensuring consistent performance.
The tapered roller design efficiently handles both radial and thrust loads.
Its standard radial clearance allows for smooth operation under varying conditions.
The chrome steel construction provides durability and resistance to wear.

Built for Durability: 748-742X Bearing

748-742X Bearing’s single-row construction simplifies installation while maintaining strength.
The open seal type allows for easy lubrication, enhancing its service life.
With a static radial load capacity of 93,800 lbf, it excels in demanding applications.
The steel cage ensures proper roller spacing, reducing operational noise.

Steel vs Ceramic Bearings: Strengths of 748-742X Bearing

748-742X Bearing uses chrome steel for both rings and rollers, balancing cost and performance.
Its dynamic thrust rating of 10,300 lbf makes it suitable for various load conditions.
The ABEC-1 rating ensures consistent precision in industrial applications.
Weighing 7.7 lb, it offers a robust solution without excessive bulk.

Application

Industrial Uses of 748-742X Bearing
748-742X Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its tapered roller design efficiently handles combined radial and thrust loads.
The chrome steel construction ensures durability even in demanding environments, making it a reliable choice for long-term use.

Where Is 748-742X Bearing Used?
In automotive applications, 748-742X Bearing supports components like wheel hubs and differential systems, providing smooth operation under varying loads.
Its inch sizing makes it compatible with many North American vehicle models, offering versatility in repairs and replacements.

Built for Heavy-Duty Use: 748-742X Bearing
748-742X Bearing excels in industrial gearboxes, where its open design allows for easy lubrication and maintenance.
The steel cage enhances stability, ensuring consistent performance even at high speeds or under heavy loads.

Automotive vs Aerospace: Applications of 748-742X Bearing
In automotive settings, 748-742X Bearing is ideal for transmissions and axles, thanks to its robust load capacity.
While less common in aerospace, it can be found in ground support equipment where reliability is key.

Practical Applications of 748-742X Bearing
748-742X Bearing is a go-to choice for agricultural machinery, such as tractors and harvesters, due to its resistance to dirt and debris.
The standard radial clearance options also make it adaptable to various operational conditions.

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