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438W-432D TDO (Two-Row Double-Outer Race) (Imperial)

438W-432D TDO (Two-Row Double-Outer Race) (Imperial)

The 438W-432D is a double-row tapered roller bearing with a 1.75″ bore and 3.75″ outer diameter, built from sturdy chrome steel for long-lasting performance. It handles combined loads with a dynamic radial capacity of 49,700 lbf and operates smoothly in temperatures from -30°C to 110°C.

Its open design allows for easy lubrication, while the steel cage ensures durability under heavy loads. The bearing’s double-row construction provides stability, making it suitable for high-stress applications.

This model fits standard 435 series setups and comes with standard radial clearance (C3/C4/C5 options available). Ideal for industrial machinery or heavy equipment where reliable load support is needed.

Weighing 4.32 lb, it’s a robust choice for demanding environments. Compliant with RoHS and REACH standards for safe use across various industries.

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Product Parameters

  • Part Number 438W-432D
  • Brand TFL
  • Size 1.75" x 3.75" x 1.1772"
  • Bore Dia 1.75"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.75"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 2"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 1.1772"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.4376"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.24"
  • Cup Frontface Backing Diameter 3.46"
  • Cage Cone Backface Clearance 0.04"
  • Dynamic Radial Load 49700 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 438W
  • Cup Part Number 432D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 435
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 7400 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 3600 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 12900 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 4.32 lb

Features

How Does 438W-432D Bearing Handle Combined Loads?

438W-432D Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 49,700 lbf, ensuring reliable performance in demanding conditions.
The double-row tapered roller design distributes loads evenly, reducing wear and extending service life.
With a standard radial clearance, it balances durability and efficiency in various applications.

What Makes 438W-432D Bearing Suitable for High-Temperature Applications?

438W-432D Bearing operates effectively in temperatures ranging from -30° to 110 °C, maintaining performance in challenging environments.
The chrome steel construction resists heat-related wear, ensuring consistent operation.
Its open design allows for proper lubrication, further enhancing high-temperature resilience.
This makes it a dependable choice for industrial and automotive uses.

Structural Advantages of 438W-432D Bearing

438W-432D Bearing features a double-row tapered roller design, optimised for combined load handling.
The precision-engineered chrome steel rollers and rings ensure smooth operation under heavy loads.
Its standard radial clearance and steel cage contribute to reduced friction and longer life.
This design is ideal for applications requiring durability and reliability.

Application

Key Fields for 438W-432D Bearing
In industrial settings, 438W-432D Bearing is commonly used in heavy machinery like conveyor systems and gearboxes, where its double-row design handles combined loads efficiently. The chrome steel construction ensures durability even in demanding environments.
For automotive applications, 438W-432D Bearing fits well in truck wheel hubs and differential systems, thanks to its tapered roller design. Its inch measurements make it a practical choice for vehicles using imperial standards.
In automation equipment, 438W-432D Bearing supports robotic arms and assembly lines, providing reliable performance under continuous use. The open seal type allows for easy lubrication, extending its service life.

How Does 438W-432D Bearing Improve Performance?
438W-432D Bearing enhances performance in construction equipment by managing both radial and thrust loads smoothly. Its steel cage adds strength, making it suitable for high-stress conditions.
The bearing’s standard radial clearance ensures consistent operation in agricultural machinery, reducing downtime. Its ABEC-1 rating balances precision and cost-effectiveness for general applications.

Built for Heavy-Duty Use: 438W-432D Bearing
438W-432D Bearing is ideal for mining equipment, where its double-row tapered rollers withstand extreme loads. The chrome steel rollers resist wear, even in abrasive environments.
In marine applications, 438W-432D Bearing performs reliably in propeller shafts and winches. Its temperature range of -30° to 110°C ensures adaptability to varying conditions.

Automotive vs Aerospace: Applications of 438W-432D Bearing
In automotive systems, 438W-432D Bearing is favoured for its robustness in axle assemblies and transmissions. The imperial sizing simplifies integration with North American vehicle designs.
For aerospace ground support equipment, 438W-432D Bearing offers dependable performance in loading mechanisms. Its compliance with RoHS and REACH standards meets environmental regulations.

Where Is 438W-432D Bearing Used?
438W-432D Bearing is found in railway freight cars, where its tapered rollers handle heavy loads and shocks effectively. The steel cage provides added stability over long distances.
In wind turbine pitch systems, 438W-432D Bearing’s combined load capacity ensures smooth operation. Its lubrication requirement is easily managed with routine maintenance.

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