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

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

The 749-742X 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, with a dynamic radial load capacity of 84700 lbf and a static radial load of 93800 lbf.

Its open design and steel cage ensure durability, while the tapered rollers provide smooth operation under heavy loads. The bearing operates efficiently in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, making it a practical choice for replacements. Ideal for industrial machinery or automotive applications where combined loads are common.

Weighing 7.100 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 749-742X
  • Brand TFL
  • Interchangeable Timken
  • Size 3.3475" x 5.909" x 1.7502"
  • 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 1.7502"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 4.46"
  • Cone Backface Backing Diameter 3.98"
  • 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
  • Cup Part Number 742X
  • 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 749-742X Bearing

749-742X Bearing is constructed 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, enhancing durability and reducing wear.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Does 749-742X Bearing Reduce Friction?

749-742X Bearing’s tapered roller design minimises friction, ensuring smooth operation under combined loads.
The chrome steel construction provides excellent wear resistance, extending the bearing’s service life.
Its standard radial clearance allows for optimal performance in most industrial applications.
Lubrication is required to maintain efficiency and reduce operational wear.

Built for Reliability: 749-742X Bearing

749-742X Bearing features a single-row construction, ideal for handling both radial and thrust loads.
With a static radial load capacity of 93,800 lbf, it ensures dependable performance in demanding environments.
The steel cage maintains roller positioning, contributing to long-term reliability.
Its ABEC-1 rating confirms consistent precision for industrial use.

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

749-742X Bearing uses chrome steel for both rings and rollers, providing excellent strength and durability.
This material choice ensures cost-effective performance without compromising on load capacity.
The bearing’s standard radial clearance offers flexibility for various installation requirements.
With a dynamic thrust rating of 12,200 lbf, it handles combined loads efficiently.

Application

Industrial Uses of 749-742X Bearing
The 749-742X Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability even in tough working conditions.

Where Is 749-742X Bearing Used?
You’ll often find the 749-742X Bearing in automotive applications, particularly in wheel hubs and differential systems. Its precise imperial sizing makes it a reliable choice for vehicles requiring consistent performance under heavy loads.

Built for Heavy-Duty Use: 749-742X Bearing
The 749-742X Bearing excels in industrial settings like conveyor systems and gearboxes, thanks to its robust steel cage and high load capacity. Its open design allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 749-742X Bearing
In automotive systems, the 749-742X Bearing supports wheel assemblies, while in aerospace, it’s used in auxiliary equipment. Its ABEC-1 rating ensures reliable performance across different industries.

Key Fields for 749-742X Bearing
The 749-742X Bearing is ideal for mining equipment, where its tapered rollers manage radial and thrust loads efficiently. Its standard radial clearance options make it versatile for various operational needs.

Q&A

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