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TS (Single Row Tapered Roller Bearings) (Imperial) 745A-742A

TS (Single Row Tapered Roller Bearings) (Imperial) 745A-742A

The 745A-742A is a single-row tapered roller bearing with a 2.75″ bore and 5.9045″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 84700 lbf radial and 12200 lbf thrust, making it robust for heavy-duty use.

Its open design allows easy lubrication, 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, offering a practical replacement option. Ideal for applications like industrial machinery or vehicle axles where combined loads are common.

Weighing 8.6 lb, it’s sturdy yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 745A-742A
  • Brand TFL
  • Interchangeable Timken
  • Size 2.75" x 5.9045" x 1.7502"
  • Bore Dia 2.75"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 5.9045"
  • 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 0.14"
  • 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 742A
  • 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 8.6 lb

Features

Performance Features of 745A-742A Bearing

745A-742A 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 maintains roller alignment, ensuring smooth operation and reduced wear.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 745A-742A Bearing Engineered for Reliability?

745A-742A Bearing features a single-row tapered roller design, optimised for combined load handling.
The chrome steel construction enhances durability, while the standard radial clearance allows for flexibility.
Its effective centre location of -0.47″ ensures stable performance under stress.
With an ABEC-1 rating, it balances precision and cost-effectiveness.

Built for Durability: 745A-742A Bearing

745A-742A Bearing’s chrome steel rollers and rings provide long-lasting performance in demanding environments.
The steel cage design minimises friction, extending the bearing’s service life.
With a static radial load capacity of 93,800 lbf, it handles heavy loads with ease.
Its standard lubrication requirement ensures consistent performance over time.

Steel vs Ceramic Bearings: Strengths of 745A-742A Bearing

745A-742A Bearing uses chrome steel for both rollers and rings, offering excellent strength and wear resistance.
The steel cage provides reliable roller guidance, reducing operational noise.
With a dynamic thrust rating of 12,200 lbf, it excels in applications requiring combined load support.
Its inch-sized dimensions make it compatible with imperial system machinery.

Application

Common Applications of 745A-742A Bearing
In heavy machinery, 745A-742A Bearing handles combined loads effectively, making it suitable for construction equipment like bulldozers and cranes. Its tapered roller design ensures stability under varying pressure conditions.
For agricultural machinery, 745A-742A Bearing supports components in tractors and harvesters, where its chrome steel construction resists wear from dust and debris. The open seal type allows for easy lubrication in field conditions.
In industrial gearboxes, 745A-742A Bearing’s precise tolerances help maintain alignment under high radial loads. Its compatibility with Timken designs makes it a versatile replacement option.

Where Is 745A-742A Bearing Used?
You’ll often find 745A-742A Bearing in mining equipment, where its robust design handles extreme loads and vibrations. The steel cage adds durability in abrasive environments.
It’s also common in truck wheel hubs, providing reliable performance for long-haul transportation. The inch sizing makes it ideal for North American vehicle specifications.

Built for Heavy-Duty Use: 745A-742A Bearing
745A-742A Bearing excels in paper mill machinery, withstanding both radial and thrust loads from heavy rollers. The chrome steel rollers offer consistent performance in humid conditions.
For power generation equipment, 745A-742A Bearing’s temperature range suits turbines and generators. Its ABEC-1 rating balances precision with industrial-grade durability.

Automotive vs Industrial: Applications of 745A-742A Bearing
In automotive drivetrains, 745A-742A Bearing supports differential systems with its combined load capacity. The tapered rollers manage varying angles during turns.
For factory conveyor systems, 745A-742A Bearing’s static load rating ensures reliability in continuous operation. The standard radial clearance accommodates thermal expansion in production environments.

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