+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
TS (Single Row Tapered Roller Bearings) (Imperial) 749A-743

TS (Single Row Tapered Roller Bearings) (Imperial) 749A-743

The 749A-743 is a single-row tapered roller bearing with a 3.25″ bore and 5.9055″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 84700 lbf radial and 12200 lbf thrust, making it a robust choice for heavy-duty applications.

Its open design allows for 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 use in industrial machinery, automotive systems, or construction equipment where combined loads are common.

Weighing 7.3 lb, it’s built to last while meeting RoHS and REACH standards for safe and compliant use. The ABEC-1 rating ensures consistent performance for general industrial needs.

Get A Free Quote
    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number 749A-743
  • Brand TFL
  • Interchangeable Timken
  • Size 3.25" x 5.9055" x 1.7502"
  • Bore Dia 3.25"
  • Bore Dia Tolerance +0.001" to 0
  • Outer Dia 5.9055"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.8375"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 1.378"
  • 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 743
  • 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 7.3 lb

Features

Performance Features of 749A-743 Bearing

749A-743 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 enhancing durability.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 749A-743 Bearing Engineered for Reliability?

749A-743 Bearing features precise cone and cup width tolerances, ensuring consistent performance.
The tapered roller design distributes loads evenly, extending the bearing’s service life.
Its standard radial clearance options provide flexibility for different operational needs.
Lubrication is required to maintain smooth operation and reduce wear over time.

Built for Durability: 749A-743 Bearing

749A-743 Bearing’s chrome steel construction resists wear, even under high radial and thrust loads.
The open design allows for easy lubrication, keeping maintenance straightforward.
With an ABEC-1 rating, it balances precision and cost-effectiveness for industrial use.
Its static radial load capacity of 93,800 lbf ensures reliability in demanding environments.

Steel vs Ceramic Bearings: Strengths of 749A-743 Bearing

749A-743 Bearing uses chrome steel for both rollers and rings, providing excellent strength and durability.
The steel cage design ensures stability, even at high speeds or under heavy loads.
Unlike ceramic options, it offers a cost-effective solution without compromising performance.
Its wide temperature range makes it versatile for various industrial applications.

Application

Industrial Uses of 749A-743 Bearing
749A-743 Bearing is commonly used in heavy machinery like construction equipment, where its tapered roller design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability even in demanding environments.

Where Is 749A-743 Bearing Used?
In automotive applications, 749A-743 Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it compatible with many North American vehicle models.

Built for Heavy-Duty Use: 749A-743 Bearing
This bearing excels in industrial gearboxes, where its single-row design simplifies installation and maintenance. The steel cage adds strength, making it suitable for high-load scenarios.

Automotive vs Aerospace: Applications of 749A-743 Bearing
While 749A-743 Bearing is popular in truck axles, its precision also suits aerospace landing gear components. The ABEC-1 rating ensures consistent performance in both fields.

Perfect Fit for Automation: 749A-743 Bearing
In robotic arms, 749A-743 Bearing offers smooth rotation thanks to its tapered rollers. The open seal design allows for easy lubrication, extending service life in continuous operations.

Q&A

SEND INQUIRY