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

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

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

Its open design allows for easy lubrication, while the steel cage ensures smooth operation. The bearing works well in temperatures from -30°C to 110°C, making it versatile for various environments.

This model features a standard radial clearance and is ABEC-1 rated for reliable precision. Ideal for heavy-duty applications like industrial gearboxes or large machinery where both radial and thrust loads are present.

Weighing 9.1 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for most industrial settings.

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Product Parameters

  • Part Number 557A-552DC
  • 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 552DC
  • 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

Performance Features of 557A-552DC Bearing

557A-552DC Bearing is built with chrome steel rings and rollers, offering robust performance under combined loads.
Its dynamic radial load capacity reaches 74,700 lbf, making it suitable for heavy-duty applications.
The double-row tapered roller design ensures stability and efficient load distribution.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Does 557A-552DC Bearing Resist Wear?

557A-552DC Bearing’s chrome steel construction enhances its resistance to wear and tear.
The steel cage maintains roller alignment, reducing friction and prolonging service life.
Its standard radial clearance options allow for flexibility in different operational needs.
This bearing is designed to handle both radial and thrust loads effectively.

Engineered for Precision: 557A-552DC Bearing

557A-552DC Bearing features precise tolerances, ensuring smooth and accurate operation.
The double-row design provides increased load capacity without compromising on space.
Its ABEC-1 rating guarantees consistent performance in various industrial applications.
The bearing’s open design simplifies lubrication and maintenance procedures.

Steel vs Ceramic Bearings: Strengths of 557A-552DC Bearing

557A-552DC Bearing’s chrome steel rollers and rings offer superior strength and durability.
It withstands high dynamic radial loads up to 74,700 lbf, ideal for demanding environments.
The steel cage ensures reliable roller positioning, enhancing overall performance.
This bearing is RoHS and REACH compliant, meeting international environmental standards.

What Ensures Smooth Operation in 557A-552DC Bearing?

557A-552DC Bearing’s tapered roller design minimises friction, ensuring smooth rotation.
The precise tolerances and chrome steel materials contribute to its reliable operation.
Its double-row construction allows for even load distribution, reducing stress on components.
With a wide temperature range, it performs consistently in various working conditions.

Application

Industrial Uses of 557A-552DC Bearing
557A-552DC 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 effectively. The chrome steel construction ensures durability in demanding environments.

Where Is 557A-552DC Bearing Used?
In automotive applications, 557A-552DC Bearing supports wheel hubs and drivetrains, providing reliable performance under high stress. Its inch sizing makes it a preferred choice for North American vehicle manufacturers.

Built for Heavy-Duty Use: 557A-552DC Bearing
557A-552DC Bearing excels in industrial fans and pumps, where its open seal design allows for easy lubrication. The tapered roller construction ensures smooth operation even at high speeds.

Automotive vs Aerospace: Applications of 557A-552DC Bearing
557A-552DC Bearing is versatile enough for both automotive and aerospace applications, though its robust design leans more towards heavy-duty industrial use. The steel cage adds extra strength for long-term reliability.

What Makes 557A-552DC Bearing a Preferred Choice?
For conveyor systems, 557A-552DC Bearing offers excellent load capacity and stability. Its standard radial clearance makes it easy to integrate into existing setups without extensive modifications.

Q&A

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