TS (Single Row Tapered Roller Bearings) (Imperial) 740-743

The 740-743 is a single row tapered roller bearing with a 3.1875″ 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 industrial gearboxes or vehicle axles where combined loads are common.

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

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Description

Features

Application

Q&A

Product Parameters

Part Number 740-743
Brand TFL
Interchangeable Timken
Size 3.1875" x 5.9055" x 1.7502"
Bore Dia 3.1875"
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 0.2"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 4.4"
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 740
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 7.400 lb

Features

How Does 740-743 Bearing Handle Combined Loads?

740-743 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, ensuring reliable performance in demanding conditions.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in various environments.

What Makes 740-743 Bearing Suitable for Heavy-Duty Applications?

740-743 Bearing features a single-row tapered roller design, ideal for handling combined loads.
The chrome steel construction provides durability and resistance to wear under high stress.
Its static radial load capacity of 93,800 lbf ensures stability in heavy-duty operations.
The standard radial clearance allows for flexibility in different applications.

Engineered for Precision: 740-743 Bearing

740-743 Bearing is designed with precise tolerances, ensuring smooth and accurate operation.
The tapered roller construction minimises friction, enhancing efficiency and performance.
Its ABEC-1 rating guarantees consistent quality and reliability.
The open design simplifies lubrication, reducing maintenance requirements.

Application

Industrial Uses of 740-743 Bearing
The 740-743 Bearing is commonly used in heavy machinery like construction equipment and mining gear, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 740-743 Bearing fits well in truck wheel hubs and differential systems, providing reliable performance under heavy radial and thrust loads. The imperial sizing makes it a straightforward replacement for Timken equivalents.

For industrial fans and pumps, 740-743 Bearing’s open design allows easy lubrication, extending service life in continuous operation. Its standard radial clearance offers flexibility for various installation requirements.

Where Is 740-743 Bearing Used?
You’ll often find 740-743 Bearing in agricultural machinery, such as tractors and harvesters, where its robust design withstands rough conditions. The steel cage adds extra strength for high-impact loads.

In conveyor systems, 740-743 Bearing ensures smooth movement of heavy materials, thanks to its tapered rollers distributing loads evenly. The ABEC-1 rating balances precision and cost-effectiveness for industrial use.

Built for Heavy-Duty Use: 740-743 Bearing
The 740-743 Bearing excels in forestry equipment like log skidders, where its combined load capacity handles uneven forces. Its temperature range suits both cold and moderately hot environments.

For railway applications, 740-743 Bearing supports axle boxes, offering stability and longevity. The chrome steel rollers resist wear, reducing maintenance needs over time.

Automotive vs Aerospace: Applications of 740-743 Bearing
In trucks and buses, 740-743 Bearing manages wheel loads reliably, while its imperial sizing simplifies repairs. It’s less common in aerospace due to weight constraints but fits heavier ground support gear.

For industrial presses, 740-743 Bearing’s dynamic radial load rating ensures consistent performance under repetitive stress. The open design allows quick inspections and relubrication during downtime.