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744A Single Cones (Imperial)

The 744A is a single-row tapered roller bearing with a 2.75-inch bore, made from durable chrome steel. It handles combined loads, with a dynamic radial load capacity of 71400 lbf and a static radial load of 93800 lbf.

Its open design allows for easy maintenance, while the steel cage ensures reliable performance. The bearing operates smoothly 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 heavy-duty applications like industrial machinery or automotive systems where combined loads are common.

Compliant with RoHS and REACH standards, it offers a balance of strength and durability. The standard radial clearance ensures smooth operation under various conditions.

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Description

Features

Application

Q&A

Product Parameters

Part Number 744A
Brand TFL
Interchangeable Brand Timken
System of Measurement Inch
Type Cones
Bearing Part Number 744A-742 , 744A-742A , 744A-742V , 744A-742X , 744A-743
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Series 745
Bore Dia 2.75"
Bore Dia Tolerance +0.005" to 0
Cone Width 1.8375"
Cone Width Tolerance +0.003" to -0.01
Cone Backface ToClear Radius 0.2"
Cone Frontface Backing Diameter 3.23"
Cone Backface Backing Diameter 3.58"
Cage Cone Frontface Clearance 0.08"
Cage Cone Backface Clearance 0.05"
Effective Center Location -0.47"
Ring Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 71400 lbf
Static Radial Load 93800 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 18500 lbf
Dynamic Radial Rating(Two Row 1 Million Revolutions)(C1) 124000 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 10300 lbf
Dynamic Radial Rating(Two Row 90 Million Revolutions)(C90) 32200 lbf
Temperature Range -30° to 110 °C
ABEC Rating ABEC-1
Radial Clearance Standard (Available in C3/C4/C5)
RoHS Compliant
REACH Compliant

Features

How Does 744A Bearing Handle Combined Loads?

744A Bearing is designed with chrome steel rings and a steel cage, providing strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 71,400 lbf, ensuring reliable performance in demanding applications.

The tapered roller design of 744A Bearing ensures smooth operation under combined loads.
With a temperature range of -30° to 110°C, it performs well in various environments.

744A Bearing’s standard radial clearance allows for flexibility in different applications.
Its ABEC-1 rating ensures consistent precision and durability.

Application

Industrial Uses of 744A Bearing
The 744A Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effortlessly. Its chrome steel construction ensures durability even in demanding environments.

Where Is 744A Bearing Used?
You’ll often find 744A Bearing in automotive applications, particularly in wheel hubs and differential systems. Its inch sizing makes it a reliable choice for older or custom-built vehicles.

Built for Heavy-Duty Use: 744A Bearing
In industrial conveyor systems, 744A Bearing provides smooth operation under high radial and thrust loads. The open design allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 744A Bearing
While 744A Bearing excels in truck axles and heavy vehicles, it’s also suitable for ground support equipment in aerospace. Its robust design ensures performance under varying load conditions.

What Makes 744A Bearing a Preferred Choice?
For mining equipment, 744A Bearing’s high dynamic load capacity makes it ideal for handling rough conditions. The steel cage adds extra strength, reducing wear over time.

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