TS (Single Row Tapered Roller Bearings) (Imperial) 740-742X

The 740-742X is a single-row tapered roller bearing with a 3.1875″ bore and 5.909″ 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 industrial machinery, gearboxes, or automotive systems where combined loads are common.

Weighing 7.5 lb, it’s built to last with standard radial clearance and ABEC-1 precision. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Description

Features

Application

Q&A

Product Parameters

Part Number 740-742X
Brand TFL
Interchangeable Timken
Size 3.1875" x 5.909" x 1.7502"
Bore Dia 3.1875"
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 0.2"
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 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 7.5 lb

Features

Performance Features of 740-742X Bearing

740-742X Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 84,700 lbf, ensuring reliable performance in demanding conditions.
The steel cage maintains proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs consistently in various environments.

How Is 740-742X Bearing Engineered for Reliability?

740-742X Bearing features a tapered roller design, optimised for handling both radial and thrust loads.
The chrome steel construction provides durability, while the steel cage ensures smooth operation.
Its standard radial clearance allows for flexibility in different applications.
With an ABEC-1 rating, it balances precision and cost-effectiveness.

Built for Durability: 740-742X Bearing

740-742X Bearing’s single-row construction simplifies installation while maintaining high load capacity.
The open design allows for easy lubrication, ensuring long service life with proper maintenance.
Its static radial load rating of 93,800 lbf makes it suitable for heavy-duty applications.
The inch-sized dimensions ensure compatibility with imperial system machinery.

Steel vs Ceramic Bearings: Strengths of 740-742X Bearing

740-742X Bearing uses chrome steel for both rollers and rings, offering excellent strength-to-weight ratio.
This material choice provides good wear resistance while remaining cost-effective compared to ceramic options.
The bearing’s 7.5 lb weight is balanced for stability without excessive bulk.
Its standard lubrication requirement makes maintenance straightforward for most industrial applications.

Why Choose 740-742X Bearing for Precision Tasks?

740-742X Bearing’s precise tolerances ensure consistent performance in alignment-critical applications.
The tapered roller design distributes loads evenly across the bearing surfaces.
With a dynamic thrust rating of 12,200 lbf, it handles axial loads effectively.
The bearing’s -0.47″ effective center location provides stability in mounted arrangements.

Application

Industrial Uses of 740-742X Bearing
740-742X Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 740-742X Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a straightforward choice for North American vehicle designs.

For industrial conveyor systems, 740-742X Bearing’s open design simplifies lubrication and maintenance, keeping operations smooth. The standard radial clearance offers flexibility for different load conditions.

Where Is 740-742X Bearing Used?
You’ll often find 740-742X Bearing in mining equipment, where its robust build handles high radial and thrust loads. The steel cage adds extra strength for long-term use.

In railway applications, 740-742X Bearing supports axle boxes, ensuring stable performance under heavy loads. Its ABEC-1 rating balances precision and cost for these demanding scenarios.

Built for Heavy-Duty Use: 740-742X Bearing
740-742X Bearing excels in forestry machinery, where its tapered rollers manage uneven loads and shocks. The chrome steel rollers resist wear, even in gritty conditions.

For oil and gas equipment, 740-742X Bearing’s temperature range (-30° to 110°C) suits both Arctic and desert operations. Its dynamic load capacity keeps critical systems running reliably.

Automotive vs Aerospace: Applications of 740-742X Bearing
In automotive drivetrains, 740-742X Bearing handles high torque, while its aerospace use is limited by weight. The imperial sizing aligns with automotive standards for easy integration.

For ground support equipment in airports, 740-742X Bearing’s durability shines. Its static load capacity ensures stability under heavy loads, though aerospace flight systems need lighter options.