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44143-44363D TDO (Two-Row Double-Outer Race) (Imperial)

44143-44363D TDO (Two-Row Double-Outer Race) (Imperial)

The 44143-44363D is a two-row tapered roller bearing with a 1.4375″ bore and 3.625″ outer diameter, built from sturdy chrome steel for long-lasting performance.

It handles combined loads with a dynamic radial capacity of 39,100 lbf and runs smoothly in temperatures from -30°C to 110°C. The open design allows for easy lubrication, essential for maintenance.

Its double-row construction provides stability under heavy loads, while the steel cage ensures durability. The bearing comes in standard radial clearance but can also be ordered in C3, C4, or C5 options.

Ideal for industrial machinery or automotive applications where robust load-bearing is needed. Weighing 3.68 lb, it’s a solid choice for demanding environments. Compliant with RoHS and REACH standards.

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Product Parameters

  • Part Number 44143-44363D
  • Brand TFL
  • Size 1.4375" x 3.625" x 0.933"
  • Bore Dia 1.4375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.625"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.5625"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.933"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.1875"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.06"
  • Cone Backface Backing Diameter 2.13"
  • Cup Frontface Backing Diameter 3.39"
  • Cage Cone Backface Clearance 0.12"
  • Dynamic Radial Load 39100 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 44143
  • Cup Part Number 44363D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 44000
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 5810 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 7770 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 10100 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 3.68 lb

Features

How Is 44143-44363D Bearing Engineered for Reliability?

44143-44363D Bearing features a double-row tapered roller design, providing strong resistance to combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 39,100 lbf.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a standard radial clearance, it offers reliable performance in various industrial applications.

What Makes 44143-44363D Bearing Suitable for High-Temperature Applications?

44143-44363D Bearing operates effectively within a temperature range of -30° to 110°C, making it suitable for demanding environments.
Its chrome steel rollers and rings resist thermal expansion, maintaining precision under heat.
The open design allows for easy lubrication, ensuring smooth operation even in high-temperature conditions.
This bearing is ideal for applications where consistent performance is required despite temperature fluctuations.

Built for Durability: 44143-44363D Bearing

44143-44363D Bearing is constructed with high-quality chrome steel, offering excellent wear resistance.
Its double-row design distributes loads evenly, reducing stress on individual components.
The steel cage ensures proper roller spacing, minimising wear and extending service life.
With a dynamic radial rating of 10,100 lbf for two rows, it delivers reliable performance in heavy-duty applications.

Steel vs Ceramic Bearings: Strengths of 44143-44363D Bearing

44143-44363D Bearing uses chrome steel for both rollers and rings, providing a balance of strength and cost-effectiveness.
This material choice ensures high load capacity and resistance to deformation under stress.
The steel cage further enhances durability, making it suitable for industrial applications.
While ceramic bearings may offer lower weight, 44143-44363D Bearing excels in robustness and reliability.

Application

Industrial Uses of 44143-44363D Bearing
44143-44363D Bearing is commonly used in heavy machinery like construction equipment, where its double-row design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 44143-44363D Bearing supports axle systems, providing reliable performance under varying load conditions. Its inch sizing makes it a preferred choice for North American vehicle manufacturers.

For industrial conveyor systems, 44143-44363D Bearing’s tapered roller design offers smooth operation and long service life. The open seal type allows for easy lubrication, reducing maintenance downtime.

Where Is 44143-44363D Bearing Used?
44143-44363D Bearing is ideal for agricultural machinery, where its robust construction withstands dirt and debris. The standard radial clearance ensures consistent performance in varying temperatures.

In mining equipment, 44143-44363D Bearing’s high dynamic load capacity makes it suitable for heavy-duty applications. The steel cage adds extra strength, prolonging the bearing’s lifespan.

Built for Heavy-Duty Use: 44143-44363D Bearing
44143-44363D Bearing excels in forestry machinery, handling both radial and axial loads with ease. Its ABEC-1 rating ensures reliable precision for most industrial needs.

For railway applications, 44143-44363D Bearing’s tapered rollers provide stability under high-speed conditions. The inch measurements simplify replacements in older systems.

Automotive vs Aerospace: Applications of 44143-44363D Bearing
In automotive drivetrains, 44143-44363D Bearing offers dependable performance for trucks and buses. Its combined load capacity makes it versatile for various vehicle types.

For aerospace ground support equipment, 44143-44363D Bearing’s temperature range suits outdoor operations. The chrome steel rollers resist wear, even with frequent use.

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