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43138X-43319D TDO (Two-Row Double-Outer Race) (Imperial)

43138X-43319D TDO (Two-Row Double-Outer Race) (Imperial)

The 43138X-43319D is a double-row tapered roller bearing with a 1.378″ bore and 3.1875″ outer diameter, built from sturdy chrome steel for long-lasting performance.
It handles combined loads up to 30400 lbf, with a dynamic radial rating of 7880 lbf for two-row operation, making it suitable for heavy-duty applications.
The open design allows for easy lubrication, while the steel cage ensures durability under high stress. It operates smoothly in temperatures from -30°C to 110°C.
Ideal for industrial machinery or automotive systems where combined radial and thrust loads are common. Compliant with RoHS and REACH standards, it weighs 2.61 lb for easy handling.

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Product Parameters

  • Part Number 43138X-43319D
  • Brand TFL
  • Size 1.378" x 3.1875" x 0.9166"
  • Bore Dia 1.378"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.1875"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.5625"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.9166"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.1251"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.06"
  • Cone Backface Backing Diameter 2.05"
  • Cup Frontface Backing Diameter 2.94"
  • Cage Cone Backface Clearance 0.07"
  • Dynamic Radial Load 30400 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 43138X
  • Cup Part Number 43319D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 43000
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 4520 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 5170 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 7880 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 2.61 lb

Features

How Is 43138X-43319D Bearing Engineered for Reliability?

43138X-43319D Bearing features a double-row tapered roller design, providing strong resistance to combined radial and thrust loads.
Its chrome steel construction ensures durability, even under heavy loads up to 30,400 lbf.
The steel cage maintains roller alignment, reducing friction and extending service life.
With a standard radial clearance, it offers reliable performance across various applications.

What Makes 43138X-43319D Bearing Suitable for High-Temperature Applications?

43138X-43319D Bearing operates efficiently in temperatures ranging from -30° to 110°C.
Its chrome steel rollers and rings resist thermal expansion, maintaining precision under heat.
The open design allows for proper lubrication, ensuring smooth operation in demanding conditions.
This makes it ideal for industrial applications where temperature fluctuations are common.

Built for Durability: 43138X-43319D Bearing

43138X-43319D Bearing is constructed with high-quality chrome steel for both rings and rollers.
Its double-row design distributes loads evenly, enhancing longevity and reducing wear.
The steel cage ensures proper roller spacing, minimising friction and noise.
With a dynamic radial load capacity of 30,400 lbf, it handles heavy-duty tasks with ease.

Steel vs Ceramic Bearings: Strengths of 43138X-43319D Bearing

43138X-43319D Bearing uses chrome steel for its rollers and rings, offering excellent strength and durability.
This material choice provides superior load-bearing capacity compared to ceramic alternatives.
The steel cage further enhances stability, ensuring consistent performance under stress.
Its design is optimised for heavy industrial use, where reliability is key.

Application

Industrial Uses of 43138X-43319D Bearing
43138X-43319D Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its double-row design handles combined radial and thrust loads efficiently. The chrome steel construction ensures durability even in demanding environments.

Where Is 43138X-43319D Bearing Used?
You’ll often find 43138X-43319D Bearing in agricultural machinery, like tractors and harvesters, where its tapered roller design provides reliable performance under varying loads. The inch sizing makes it a good fit for North American equipment standards.

Built for Heavy-Duty Use: 43138X-43319D Bearing
43138X-43319D Bearing excels in industrial gearboxes, offering smooth operation and long service life. Its open design simplifies lubrication, which is essential for maintaining performance in high-load applications.

Automotive vs Aerospace: Applications of 43138X-43319D Bearing
In automotive applications, 43138X-43319D Bearing supports wheel hubs and differentials, while in aerospace, it’s used in landing gear systems. The ABEC-1 rating ensures consistent precision for both industries.

Essential Roles of 43138X-43319D Bearing
43138X-43319D Bearing is a reliable choice for conveyor systems, where its tapered rollers manage heavy loads with ease. The standard radial clearance option allows for flexibility in various operational conditions.

Q&A

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