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557A-552D TDO (Two-Row Double-Outer Race) (Imperial)

557A-552D TDO (Two-Row Double-Outer Race) (Imperial)

The 557A-552D is a two-row tapered roller bearing with a 2.375″ bore and 4.875″ outer diameter, built from sturdy chrome steel for heavy-duty use. It handles combined loads up to 74700 lbf and is designed for long-lasting performance in demanding conditions.

Its double-row construction provides extra stability, while the open design allows for easy lubrication. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is part of the 555 series, offering standard radial clearance with options for C3/C4/C5. Weighing 9.1 lb, it’s robust yet manageable for its size.

Ideal for industrial machinery or automotive applications where high radial and thrust loads are common. Compliant with RoHS and REACH standards for safe operation.

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Product Parameters

  • Part Number 557A-552D
  • Brand TFL
  • Size 2.375" x 4.875" x 1.444"
  • Bore Dia 2.375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.875"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 2.5"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 1.444"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 3.1249"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.06"
  • Cone Backface Backing Diameter 3.31"
  • Cup Frontface Backing Diameter 4.56"
  • Cage Cone Backface Clearance 0.07"
  • Dynamic Radial Load 74700 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 557A
  • Cup Part Number 552D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 555
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 11100 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 6590 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 19400 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 9.1 lb

Features

Why Choose 557A-552D Bearing for Combined Loads?

557A-552D Bearing features a double-row tapered roller design, making it ideal for handling both radial and thrust loads.
Its chrome steel construction ensures durability and resistance to wear in demanding applications.

The dynamic radial load capacity reaches 74,700 lbf, providing reliable performance under heavy loads.
With a standard radial clearance, it offers smooth operation and easy integration into various systems.

557A-552D Bearing operates efficiently within a temperature range of -30° to 110°C.
Its open design allows for easy lubrication, ensuring long service life with minimal maintenance.

Application

Key Fields for 557A-552D Bearing
In industrial settings, 557A-552D Bearing is commonly used in heavy machinery like mining equipment and construction vehicles, where its double-row design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.

Where Is 557A-552D Bearing Used?
You’ll often find 557A-552D Bearing in automotive applications, particularly in wheel hubs and differential systems, where its tapered roller design provides smooth performance. The inch sizing makes it a good fit for North American vehicle models.

Built for Heavy-Duty Use: 557A-552D Bearing
This bearing excels in agricultural machinery, such as tractors and harvesters, thanks to its high dynamic radial load capacity. The open seal type allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 557A-552D Bearing
While 557A-552D Bearing is popular in trucks and buses for its load-bearing capabilities, it’s also suitable for aerospace ground support equipment. The steel cage adds reliability in high-stress scenarios.

Practical Applications of 557A-552D Bearing
In conveyor systems, 557A-552D Bearing’s tapered rollers manage both radial and thrust loads efficiently. Its standard radial clearance ensures consistent performance without frequent adjustments.

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