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

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

The 744A-742A is a single-row tapered roller bearing with a 2.75″ bore and 5.9045″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 71400 lbf radially and 10300 lbf thrust, making it versatile for heavy-duty use.

Its open design allows 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 industrial machinery, gearboxes, or automotive applications where combined loads are common.

Weighing 8.6 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 744A-742A
  • Brand TFL
  • Interchangeable Timken
  • Size 2.75" x 5.9045" x 1.7502"
  • Bore Dia 2.75"
  • Bore Dia Tolerance +0.005" 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 0.2"
  • 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 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 8.6 lb

Features

How Is 744A-742A Bearing Engineered for Reliability?

744A-742A Bearing is built with chrome steel rings and rollers, ensuring strength and durability under combined loads.
Its dynamic radial load capacity reaches 71,400 lbf, making it suitable for 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 reliably in various conditions.

What Makes 744A-742A Bearing Suitable for High-Temperature Applications?

744A-742A Bearing operates efficiently in temperatures up to 110°C without compromising performance.
The chrome steel construction resists thermal expansion, maintaining precision under heat.
Its open design allows for easy lubrication, ensuring smooth operation in demanding environments.
The standard radial clearance options provide flexibility for different thermal conditions.

Designed for Durability: 744A-742A Bearing

744A-742A Bearing features a single-row tapered roller design, optimised for combined load handling.
The chrome steel components resist wear, enhancing longevity even under heavy radial and thrust loads.
With a static radial load capacity of 93,800 lbf, it offers reliable performance in industrial settings.
Its ABEC-1 rating ensures consistent precision for various applications.

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

744A-742A Bearing uses chrome steel for both rollers and rings, providing excellent strength and cost-effectiveness.
The steel cage ensures stability and reduces friction, unlike some ceramic alternatives.
Its dynamic thrust rating of 10,300 lbf at 90 million revolutions highlights its durability.
The standard radial clearance options make it versatile for different installation needs.

Performance Features of 744A-742A Bearing

744A-742A Bearing combines high dynamic radial and thrust ratings for versatile performance.
The tapered roller design efficiently manages combined loads, reducing stress on components.
Its inch-sized dimensions (2.75″ bore) make it compatible with imperial system machinery.
The open seal type allows for easy maintenance and lubrication access.

Application

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

Where Is 744A-742A Bearing Used?
You’ll often find 744A-742A Bearing in automotive applications like truck wheel hubs, where its high radial load capacity is essential. The inch sizing makes it a good fit for North American vehicles.

Built for Heavy-Duty Use: 744A-742A Bearing
744A-742A Bearing excels in industrial fans and pumps, thanks to its robust steel cage and open design for easy lubrication. It’s a reliable choice for continuous operation.

Automotive vs Aerospace: Applications of 744A-742A Bearing
In automotive settings, 744A-742A Bearing supports drivetrain components, while in aerospace, it’s used in auxiliary systems. Its temperature range suits both environments well.

Key Fields for 744A-742A Bearing
744A-742A Bearing is ideal for agricultural machinery, like tractors, where its static load rating ensures stability. The standard radial clearance offers flexibility in various setups.

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