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TS (Single Row Tapered Roller Bearings) (Imperial) 744-743

TS (Single Row Tapered Roller Bearings) (Imperial) 744-743

The 744-743 is a single-row tapered roller bearing with a 2.875″ bore and 5.9055″ outer diameter, crafted from robust chrome steel. It handles combined loads up to 84700 lbf radially and 12200 lbf thrust, making it suitable 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 8.2 lb, it’s built to last while maintaining efficient performance. Compliant with RoHS and REACH standards for safe and environmentally friendly use.

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Product Parameters

  • Part Number 744-743
  • Brand TFL
  • Interchangeable Timken
  • Size 2.875" x 5.9055" x 1.7502"
  • Bore Dia 2.875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 5.9055"
  • 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 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 4.09"
  • Cone Backface Backing Diameter 3.58"
  • 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 744
  • Cup Part Number 743
  • 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 84700 lbf
  • Static Radial Load 93800 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 21900 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 12200 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 8.2 lb

Features

Performance Features of 744-743 Bearing

744-743 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 84,700 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 environmental conditions.

744-743 Bearing’s standard radial clearance allows for easy installation and maintenance.
The tapered roller design efficiently handles both radial and thrust loads.

Application

Industrial Uses of 744-743 Bearing
The 744-743 Bearing is commonly used in heavy machinery like construction equipment and mining rigs, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in tough working conditions.

In automotive applications, 744-743 Bearing fits well in truck wheel hubs and differential systems, providing reliable performance under high radial and thrust loads. The inch sizing makes it a convenient choice for American-made vehicles.

For industrial fans and pumps, 744-743 Bearing’s open design allows easy lubrication, extending service life in continuous operation. The standard radial clearance offers flexibility for various installation requirements.

Where Is 744-743 Bearing Used?
You’ll often find 744-743 Bearing in agricultural machinery, such as tractors and harvesters, where its robust design withstands dusty and high-vibration environments. The steel cage adds extra strength for long-term use.

In conveyor systems, 744-743 Bearing supports heavy loads while maintaining smooth rotation. Its ABEC-1 rating ensures consistent performance without over-engineering for general industrial needs.

Built for Heavy-Duty Use: 744-743 Bearing
The 744-743 Bearing excels in forestry equipment like log splitters, where its tapered rollers manage uneven loads effortlessly. The chrome steel rollers resist wear even under constant stress.

For railway applications, 744-743 Bearing’s high dynamic radial load capacity makes it suitable for axle boxes. Its temperature range of -30° to 110°C ensures reliability in varying climates.

Automotive vs Aerospace: Applications of 744-743 Bearing
In automotive drivetrains, 744-743 Bearing handles the combined loads of gears and shafts with ease. The inch measurements simplify replacements in older vehicle models.

While not typically used in aerospace, 744-743 Bearing’s precision makes it a fit for ground support equipment. Its standard radial clearance balances performance and cost for non-critical applications.

Q&A

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