TS (Single Row Tapered Roller Bearings) (Imperial) 745A-743

The 745A-743 is a single-row tapered roller bearing with a 2.75″ bore and 5.9055″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 84700 lbf radially and 12200 lbf thrust, making it a versatile choice.

Its open design allows for easy lubrication, while the steel cage ensures durability. 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 heavy-duty applications like truck axles or industrial gearboxes.

Weighing 8.5 lb, it’s built to last with standard radial clearance and ABEC-1 precision. Compliant with RoHS and REACH standards for safe use.

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Description

Features

Application

Q&A

Product Parameters

Part Number 745A-743
Brand TFL
Interchangeable Timken
Size 2.75" x 5.9055" x 1.7502"
Bore Dia 2.75"
Bore Dia Tolerance +0.005" 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 3.94"
Cone Backface Backing Diameter 3.46"
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 745A
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 8.5 lb

Features

How Does 745A-743 Bearing Handle Combined Loads?

745A-743 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 ensures proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

Why Choose 745A-743 Bearing for Precision Tasks?

745A-743 Bearing features a single-row tapered roller design, providing precise load distribution.
The chrome steel construction enhances durability, even under high stress.
Its standard radial clearance ensures smooth operation, ideal for precision machinery.
The ABEC-1 rating confirms its consistent performance in demanding applications.

Designed for Durability: 745A-743 Bearing

745A-743 Bearing’s chrome steel components resist wear, ensuring long service life.
The tapered roller design efficiently handles combined loads, reducing stress on the bearing.
With a static radial load capacity of 93,800 lbf, it excels in heavy-load scenarios.
The steel cage maintains roller alignment, preventing premature failure.

Application

Industrial Uses of 745A-743 Bearing
745A-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 in rugged environments.

In automotive applications, 745A-743 Bearing supports axle systems and wheel hubs, providing reliable performance under varying loads. Its imperial sizing makes it a straightforward replacement for Timken equivalents.

For industrial fans and pumps, 745A-743 Bearing’s open design simplifies lubrication, extending service life in continuous operation. The standard radial clearance offers flexibility for different installation requirements.

Where Is 745A-743 Bearing Used?
You’ll often find 745A-743 Bearing in agricultural machinery, where its robust design withstands dusty and high-load conditions. The steel cage adds extra resilience against impact.

In material handling systems, 745A-743 Bearing ensures smooth conveyor operation, thanks to its tapered rollers distributing loads evenly. The ABEC-1 rating balances precision and cost-effectiveness.

Built for Heavy-Duty Use: 745A-743 Bearing
745A-743 Bearing excels in mining equipment, where its high dynamic radial load capacity keeps operations running smoothly. The inch measurements align with North American machinery standards.

For gearboxes, 745A-743 Bearing’s tapered rollers reduce friction, improving efficiency. Its temperature range suits both indoor and outdoor applications.

Automotive vs Aerospace: Applications of 745A-743 Bearing
In automotive drivetrains, 745A-743 Bearing handles torque variations reliably, while its aerospace use is limited due to weight. The chrome steel rollers offer a good balance of strength and affordability.

For industrial presses, 745A-743 Bearing’s static load capacity ensures stability during high-force operations. The open seal design allows for custom lubrication preferences.