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

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

The 749A-742A is a single-row tapered roller bearing with a 3.25″ bore and 5.9045″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 84700 lbf radial and 12200 lbf thrust, making it robust for heavy-duty use.

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

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

Weighing 7.4 lb, it’s sturdy yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for various environments.

The standard radial clearance and ABEC-1 rating ensure dependable performance. Its tapered roller design provides stability under high loads, suitable for long-term use.

Perfect for equipment requiring precise alignment and durability, such as conveyor systems or heavy vehicles. The chrome steel construction resists wear, extending the bearing’s lifespan.

Easy to maintain with regular lubrication, it’s a practical solution for demanding conditions. Its dimensions and tolerances make it a versatile fit for many applications.

A reliable choice for engineers and maintenance teams looking for a sturdy, high-performance bearing. Its design balances strength and efficiency, catering to diverse industrial needs.

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Product Parameters

  • Part Number 749A-742A
  • Brand TFL
  • Interchangeable Timken
  • Size 3.25" x 5.9045" x 1.7502"
  • Bore Dia 3.25"
  • Bore Dia Tolerance +0.001" 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 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 4.43"
  • Cone Backface Backing Diameter 3.9"
  • 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 749A
  • 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 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 7.400 lb

Features

How Does 749A-742A Bearing Handle Combined Loads?

749A-742A Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 84,700 lbf, making it suitable for heavy-duty applications.
The steel cage maintains roller alignment, ensuring smooth operation and reducing wear.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

What Makes 749A-742A Bearing Durable?

749A-742A Bearing features chrome steel construction, enhancing its durability and load-bearing capacity.
The tapered roller design distributes loads evenly, extending the bearing’s service life.
Its standard radial clearance options allow for flexibility in different applications.
The open design simplifies lubrication, ensuring consistent performance over time.

Engineered for Precision: 749A-742A Bearing

749A-742A Bearing is designed for precise operation with tight tolerances on bore and outer diameters.
The effective center location of -0.47″ ensures accurate alignment in assembly.
Its ABEC-1 rating guarantees reliable performance for general industrial use.
The bearing’s combined load capability makes it versatile for various machinery needs.

Steel vs Ceramic Bearings: Strengths of 749A-742A Bearing

749A-742A Bearing uses chrome steel for both rings and rollers, providing excellent strength and durability.
This material choice ensures resistance to heavy loads and long-term wear.
The steel cage further enhances stability and reduces friction during operation.
With its robust construction, it offers a cost-effective solution for demanding applications.

Application

Industrial Uses of 749A-742A Bearing
749A-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 even in tough working conditions.

In automotive applications, 749A-742A Bearing fits well in truck wheel hubs and differential systems, providing reliable performance under high stress. Its inch sizing makes it a preferred choice for North American vehicle models.

For industrial conveyors, 749A-742A Bearing’s open design allows for easy lubrication, extending service life in continuous operation. The steel cage adds extra strength, making it suitable for high-load scenarios.

Where Is 749A-742A Bearing Used?
You’ll often find 749A-742A Bearing in agricultural machinery, like tractors and harvesters, where its robust design handles uneven loads. The tapered rollers ensure smooth rotation even in dusty environments.

In material handling systems, 749A-742A Bearing supports heavy loads in forklifts and cranes. Its standard radial clearance offers flexibility for various operational needs.

Built for Heavy-Duty Use: 749A-742A Bearing
749A-742A Bearing excels in forestry equipment, such as log splitters, thanks to its high static radial load capacity. The chrome steel rollers resist wear over time.

For railway applications, 749A-742A Bearing provides stability in axle boxes, ensuring safe and efficient transport. Its ABEC-1 rating balances precision and cost-effectiveness.

Automotive vs Aerospace: Applications of 749A-742A Bearing
In automotive settings, 749A-742A Bearing is ideal for drivetrain components, offering reliable performance under varying speeds. The inch measurements align with standard automotive parts.

For aerospace ground support equipment, 749A-742A Bearing handles heavy loads during aircraft maintenance. Its temperature range suits both indoor and outdoor use.

Q&A

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