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TS (Single Row Tapered Roller Bearings) (Imperial) 748-743X

TS (Single Row Tapered Roller Bearings) (Imperial) 748-743X

The 748-743X is a single-row tapered roller bearing with a 3.1496″ bore and 5.9033″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 71400 lbf radially and 10300 lbf thrust, making it suitable for heavy-duty applications.

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

This model is interchangeable with Timken bearings, offering a practical replacement option. Ideal for use in industrial machinery or automotive systems where combined loads are common.

Weighing 7.6 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets environmental and safety requirements.

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Product Parameters

  • Part Number 748-743X
  • Brand TFL
  • Interchangeable Timken
  • Size 3.1496" x 5.9033" x 1.7502"
  • Bore Dia 3.1496"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 5.9033"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.8375"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 1.378"
  • 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 0.12"
  • 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 743X
  • 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 748-743X Bearing

748-743X 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 demanding conditions.
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 748-743X Bearing Engineered for Reliability?

748-743X Bearing features a tapered roller design, optimised for handling both radial and thrust loads.
The chrome steel construction enhances durability, while the steel cage ensures smooth operation.
Its standard radial clearance allows for flexibility in different applications.
The bearing’s effective centre location improves stability under load.

Built for Durability: 748-743X Bearing

748-743X Bearing’s single row construction provides strength and reliability in heavy-duty applications.
The chrome steel rollers and rings resist wear, maintaining performance over time.
With a static radial load capacity of 93,800 lbf, it handles demanding conditions with ease.
The open design simplifies lubrication, ensuring consistent performance.

Application

Industrial Uses of 748-743X Bearing
748-743X Bearing is commonly used in heavy machinery like construction equipment, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 748-743X Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a preferred choice for North American vehicle models.

For industrial conveyor systems, 748-743X Bearing’s open design allows for easy lubrication, extending service life in high-load scenarios. The steel cage adds extra strength to withstand continuous operation.

Where Is 748-743X Bearing Used?
748-743X Bearing is ideal for agricultural machinery, such as tractors and harvesters, where its robust design handles rough terrain. The tapered rollers distribute loads evenly, reducing wear.

In mining equipment, 748-743X Bearing’s high dynamic radial load capacity makes it suitable for crushers and screens. Its temperature range ensures performance in both hot and cold conditions.

Built for Heavy-Duty Use: 748-743X Bearing
748-743X Bearing excels in forestry equipment like log splitters, where its combined load capability is essential. The standard radial clearance offers flexibility for different operational needs.

For railway applications, 748-743X Bearing supports axle boxes, ensuring smooth movement under heavy loads. Its ABEC-1 rating provides a balance of precision and affordability.

Automotive vs Aerospace: Applications of 748-743X Bearing
In automotive drivetrains, 748-743X Bearing handles high torque and radial loads, making it reliable for performance vehicles. The inch measurements ensure compatibility with many US-made parts.

For aerospace ground equipment, 748-743X Bearing is used in cargo loaders and maintenance tools. Its chrome steel rollers provide the necessary strength for frequent use.

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