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

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

The 438-432D is a two-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 double-row design provides extra stability, while the open seal allows for easy lubrication. The steel cage ensures durability, and the standard radial clearance makes it versatile for various setups.

This bearing is ideal for heavy-duty applications like industrial gearboxes or construction equipment where high radial and thrust loads are common. Weighing 4.37 lb, it’s robust yet manageable for its size.

Compliant with RoHS and REACH standards, it’s a reliable choice for replacements or new installations. The ABEC-1 rating ensures consistent performance in demanding environments.

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Product Parameters

  • Part Number 438-432D
  • 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 438
  • 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 4.37 lb

Features

How Is 438-432D Bearing Engineered for Reliability?

438-432D 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 49,700 lbf.
The steel cage maintains roller alignment, reducing wear and extending the bearing’s service life.
With a standard radial clearance, it offers reliable performance in various industrial applications.

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

438-432D Bearing operates efficiently within a temperature range of -30° to 110°C, making it suitable for demanding environments.
Its chrome steel rings and rollers resist thermal expansion, ensuring consistent performance.
The open seal design allows for easy lubrication, maintaining smooth operation under high temperatures.
This design also helps in dissipating heat effectively, prolonging the bearing’s lifespan.

Built for Durability: 438-432D Bearing

438-432D Bearing is constructed with high-quality chrome steel, offering excellent resistance to wear and fatigue.
Its double-row tapered roller design distributes loads evenly, enhancing durability under heavy conditions.
The steel cage ensures proper roller spacing, minimising friction and reducing maintenance needs.
With a weight of 4.37 lb, it balances strength and practicality for industrial use.

Steel vs Ceramic Bearings: Strengths of 438-432D Bearing

438-432D Bearing uses chrome steel for both rings and rollers, providing superior strength and cost-effectiveness.
This material choice ensures high load capacity and resistance to mechanical stress.
The steel cage further enhances stability, making it a reliable choice for heavy-duty applications.
Unlike ceramic bearings, 438-432D Bearing offers a practical balance of performance and affordability.

Application

Industrial Uses of 438-432D Bearing
The 438-432D Bearing is commonly used in heavy machinery, such as construction equipment and mining gear, where its double-row design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

Where Is 438-432D Bearing Used?
You’ll often find the 438-432D Bearing in automotive applications like truck wheel hubs, where its tapered roller design provides stability under heavy loads. The inch sizing makes it a popular choice for North American vehicles.

Built for Heavy-Duty Use: 438-432D Bearing
In industrial conveyor systems, the 438-432D Bearing offers reliable performance thanks to its open design and steel cage. The standard radial clearance allows for smooth operation in varying temperature conditions.

Automotive vs Aerospace: Applications of 438-432D Bearing
While the 438-432D Bearing excels in truck and bus wheel hubs, it’s also suitable for aerospace ground support equipment. Its ABEC-1 rating ensures consistent performance without over-engineering for less critical applications.

What Makes 438-432D Bearing a Preferred Choice?
The 438-432D Bearing’s double-row configuration makes it ideal for agricultural machinery, where space constraints and heavy loads are common. Its inch measurements simplify replacements in older equipment.

Q&A

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