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449-432DC TDO (Two-Row Double-Outer Race) (Imperial)

449-432DC TDO (Two-Row Double-Outer Race) (Imperial)

The 449-432DC is a double-row tapered roller bearing with a 1.375″ bore and 3.75″ outer diameter, built from sturdy chrome steel. It handles combined loads, supporting up to 49,700 lbf radially and 3,600 lbf thrust per row.

Its open design allows for easy lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures from -30°C to 110°C, making it versatile for various conditions.

This model features a standard radial clearance, with options for C3, C4, or C5 available. It’s ideal for heavy-duty applications like industrial gearboxes or vehicle axles where combined loads are common.

Weighing 5.02 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.

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Product Parameters

  • Part Number 449-432DC
  • Brand TFL
  • Size 1.375" x 3.75" x 1.1772"
  • Bore Dia 1.375"
  • 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 1.73"
  • 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 449
  • Cup Part Number 432DC
  • 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 5.02 lb

Features

How Does 449-432DC Bearing Handle Combined Loads?

449-432DC Bearing features a double-row tapered roller design, providing balanced performance under both 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 friction and extending service life.
With a standard radial clearance, it offers reliable operation in various industrial applications.

Why Choose 449-432DC Bearing for Heavy-Duty Applications?

449-432DC Bearing is built with precision tolerances, ensuring consistent performance in demanding environments.
The double-row design distributes loads evenly, enhancing stability and reducing wear.
Its temperature range of -30° to 110°C allows for versatile use in different conditions.
The open seal type simplifies maintenance, making it a practical choice for heavy machinery.

Engineered for Precision: 449-432DC Bearing

449-432DC Bearing’s tapered roller design provides smooth operation under combined loads.
The chrome steel rings and rollers resist wear, ensuring long-term reliability.
With an ABEC-1 rating, it meets standard precision requirements for industrial use.
Its lubrication requirement ensures optimal performance and reduced friction over time.

Steel vs Ceramic Bearings: Strengths of 449-432DC Bearing

449-432DC Bearing uses chrome steel for both rings and rollers, offering excellent strength and durability.
The steel cage design ensures proper roller alignment, minimising operational noise.
Its dynamic thrust rating of 3,600 lbf makes it suitable for high-load applications.
The standard radial clearance option provides flexibility for various installation needs.

Performance Features of 449-432DC Bearing

449-432DC Bearing’s double-row construction handles combined loads efficiently.
The precise tolerances on cup and cone widths ensure proper fit and alignment.
With a weight of 5.02 lb, it balances robustness with manageable installation.
The bearing’s design allows for easy lubrication, maintaining performance over extended periods.

Application

Industrial Uses of 449-432DC Bearing
The 449-432DC Bearing is commonly used in heavy machinery like construction equipment and mining tools, where its double-row design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability in demanding environments.

In automotive applications, 449-432DC Bearing supports wheel hubs and drivetrain components, providing reliable performance under varying loads. The imperial sizing makes it a preferred choice for North American vehicle models.

For industrial automation, 449-432DC Bearing’s open design allows for easy lubrication, extending its service life in high-speed conveyor systems. The tapered roller design also helps maintain precision under continuous operation.

Where Is 449-432DC Bearing Used?
You’ll often find 449-432DC Bearing in agricultural machinery, such as tractors and harvesters, where its robust construction withstands dirt and debris. The standard radial clearance ensures smooth operation even in rough conditions.

In material handling systems, 449-432DC Bearing’s high dynamic load capacity makes it ideal for forklifts and cranes. Its steel cage provides added strength, reducing wear over time.

Built for Heavy-Duty Use: 449-432DC Bearing
The 449-432DC Bearing excels in forestry equipment, handling heavy loads while maintaining stability. Its tapered rollers distribute stress evenly, preventing premature failure.

For railway applications, 449-432DC Bearing’s temperature tolerance ensures reliable performance in both hot and cold climates. The ABEC-1 rating balances precision and cost-effectiveness for freight and passenger trains.

Automotive vs Aerospace: Applications of 449-432DC Bearing
In automotive settings, 449-432DC Bearing is trusted for differential systems, offering smooth power transfer. Its inch measurements align with standard US automotive specs.

For aerospace ground support equipment, 449-432DC Bearing’s lightweight yet sturdy design aids in handling aircraft components. The chrome steel rollers provide consistent performance under frequent load changes.

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