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TS (Single Row Tapered Roller Bearings) (Imperial) 749-S-742

TS (Single Row Tapered Roller Bearings) (Imperial) 749-S-742

The 749-S-742 is a single-row tapered roller bearing with a 3.3475″ bore and 5.909″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 84700 lbf radially and 12200 lbf in thrust, with a standard radial clearance for smooth operation.

Its open design allows easy lubrication, while the steel cage ensures durability under heavy loads. The bearing operates well in temperatures from -30°C to 110°C, making it suitable for varied environments.

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

Weighing 7.1 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for most engineering needs.

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Product Parameters

  • Part Number 749-S-742
  • Brand TFL
  • Interchangeable Timken
  • Size 3.3475" x 5.909" x 1.75"
  • Bore Dia 3.3475"
  • 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 1.75"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.2"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 4.46"
  • Cone Backface Backing Diameter 4.09"
  • 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 749-S
  • 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 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 7.100 lb

Features

Performance Features of 749-S-742 Bearing

749-S-742 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 84,700 lbf, making it suitable for heavy-duty applications.

The steel cage ensures proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

749-S-742 Bearing’s standard radial clearance allows for smooth operation under different conditions.
Its ABEC-1 rating ensures consistent performance for industrial applications.

Application

Industrial Uses of 749-S-742 Bearing
The 749-S-742 Bearing is a reliable choice for heavy machinery, especially in construction equipment where combined loads are common. Its tapered roller design handles both radial and thrust forces efficiently, making it suitable for gearboxes and drivetrains.

In automotive applications, 749-S-742 Bearing works well in wheel hubs and differential systems, thanks to its durable chrome steel construction. The imperial sizing ensures compatibility with older or custom-built vehicles, particularly in the US market.

For industrial fans and pumps, 749-S-742 Bearing’s open design simplifies lubrication and maintenance. The standard radial clearance option provides flexibility for various operating conditions, balancing performance and longevity.

Where Is 749-S-742 Bearing Used?
You’ll often find 749-S-742 Bearing in agricultural machinery, where its robust design withstands dusty and high-load environments. The steel cage adds extra durability, making it a practical choice for tractors and harvesters.

In material handling systems, 749-S-742 Bearing supports conveyor rollers and lifting mechanisms. Its ABEC-1 rating ensures consistent performance without over-engineering, ideal for cost-sensitive projects.

Built for Heavy-Duty Use: 749-S-742 Bearing
The 749-S-742 Bearing excels in mining equipment, where its tapered rollers manage uneven loads and vibrations. Chrome steel components resist wear, even in harsh conditions with frequent starts and stops.

For forestry machinery, 749-S-742 Bearing’s combined load capacity handles the demands of log splitters and sawmills. The inch measurements make replacements straightforward for older North American equipment.

Automotive vs Aerospace: Applications of 749-S-742 Bearing
In automotive settings, 749-S-742 Bearing is commonly used in truck axles, where its strength and precision are crucial. The dynamic radial load rating ensures reliability over long distances and heavy cargo.

For aerospace ground support equipment, 749-S-742 Bearing provides stability in tow tractors and cargo loaders. While not for in-flight use, its temperature range suits outdoor operations in varying climates.

What Makes 749-S-742 Bearing a Preferred Choice?
The 749-S-742 Bearing’s single-row design offers a balance of simplicity and performance, ideal for industrial maintenance teams. Its interchangeability with Timken models simplifies sourcing and reduces downtime.

In food processing machinery, 749-S-742 Bearing’s open structure allows for easy cleaning and inspection. The steel cage and chrome steel rollers resist corrosion from frequent washdowns, extending service life.

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