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TS (Single Row Tapered Roller Bearings) (Imperial) 744A-742

TS (Single Row Tapered Roller Bearings) (Imperial) 744A-742

The 744A-742 is a single-row tapered roller bearing with a 2.75″ bore and 5.909″ 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, offering a reliable alternative for replacements. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 8.6 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, ensuring safe and eco-friendly use.

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Product Parameters

  • Part Number 744A-742
  • Brand TFL
  • Interchangeable Timken
  • Size 2.75" x 5.909" x 1.75"
  • Bore Dia 2.75"
  • Bore Dia Tolerance +0.005" 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 1.75"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.2"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 3.94"
  • 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 744A
  • Cup Part Number 742
  • 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 8.6 lb

Features

Performance Features of 744A-742 Bearing

744A-742 Bearing is constructed 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 744A-742 Bearing Engineered for Reliability?

744A-742 Bearing features a single-row tapered roller design, optimised for handling both radial and thrust loads.
The chrome steel construction enhances durability, while the standard radial clearance ensures smooth operation.
Its dynamic thrust rating of 10,300 lbf at 90 million revolutions highlights its long-term reliability.
This bearing is compatible with Timken designs, offering flexibility in replacements.

Built for Durability: 744A-742 Bearing

744A-742 Bearing’s robust chrome steel components withstand heavy loads and harsh conditions.
The tapered roller design distributes stress evenly, reducing wear and tear over time.
With a static radial load capacity of 93,800 lbf, it excels in demanding industrial applications.
Its ABEC-1 rating ensures consistent precision and performance.

Steel vs Ceramic Bearings: Strengths of 744A-742 Bearing

744A-742 Bearing uses high-quality chrome steel for both rollers and rings, balancing cost and performance.
The steel construction provides excellent strength and fatigue resistance under heavy loads.
Unlike ceramic options, it offers proven reliability in industrial environments.
Its standard lubrication requirements make maintenance straightforward and cost-effective.

Application

Industrial Uses of 744A-742 Bearing
744A-742 Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability in demanding environments.

In automotive applications, 744A-742 Bearing supports axle systems and wheel hubs, providing reliable performance under high radial and thrust loads. Its imperial sizing makes it a preferred choice for North American vehicle models.

For industrial conveyor systems, 744A-742 Bearing’s open design allows for easy lubrication, extending service life in continuous operation. The steel cage adds stability, reducing wear over time.

Where Is 744A-742 Bearing Used?
You’ll often find 744A-742 Bearing in agricultural machinery, like tractors and harvesters, where its robust design handles rough terrain and heavy loads. The standard radial clearance ensures smooth operation.

In power transmission systems, 744A-742 Bearing supports gearboxes and driveshafts, offering consistent performance. Its ABEC-1 rating provides a balance of precision and affordability for general industrial use.

Built for Heavy-Duty Use: 744A-742 Bearing
744A-742 Bearing excels in forestry equipment, such as log splitters and sawmills, where its tapered rollers manage intense combined loads. The chrome steel rollers resist deformation under pressure.

For railway applications, 744A-742 Bearing is used in bogies and axle boxes, ensuring reliable performance over long distances. Its temperature range suits various climatic conditions.

Automotive vs Aerospace: Applications of 744A-742 Bearing
In automotive settings, 744A-742 Bearing is ideal for truck differentials, handling high torque and radial loads. The imperial sizing simplifies replacements in older models.

For aerospace ground equipment, 744A-742 Bearing supports maintenance tools and loading systems. Its steel cage and chrome steel rollers provide durability without excessive weight.

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