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

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

The 557-552DC is a double-row tapered roller bearing with a 2.1654″ 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.

Its open design allows for easy lubrication, while the steel cage ensures durability under heavy use. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model features a standard radial clearance and is ABEC-1 rated, making it suitable for general industrial applications. Ideal for gearboxes or heavy machinery where combined loads are common.

Weighing 9.9 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and reliable use.

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Product Parameters

  • Part Number 557-552DC
  • Brand TFL
  • Size 2.1654" x 4.875" x 1.444"
  • Bore Dia 2.1654"
  • 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 2.83"
  • 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 557
  • 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 9.9 lb

Features

Performance Features of 557-552DC Bearing

557-552DC 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 standard radial clearance, it provides reliable operation in various industrial settings.

557-552DC Bearing operates within a temperature range of -30° to 110°C, ensuring versatility.
Its steel cage maintains roller alignment, reducing wear and extending service life.

The open seal design allows for easy lubrication, enhancing maintenance efficiency.
Weighing 9.9 lb, it balances durability and practicality for demanding environments.

Application

Industrial Uses of 557-552DC Bearing
557-552DC Bearing is commonly used in heavy machinery like construction equipment, where its double-row design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability in demanding environments.

Where Is 557-552DC Bearing Used?
You’ll often find 557-552DC Bearing in agricultural machinery, supporting gearboxes and wheel hubs. Its inch sizing makes it a reliable choice for North American equipment standards.

Built for Heavy-Duty Use: 557-552DC Bearing
557-552DC Bearing excels in mining applications, where its tapered roller design manages high dynamic loads. The open seal type allows for easy lubrication, extending service life.

Automotive vs Aerospace: Applications of 557-552DC Bearing
In automotive systems, 557-552DC Bearing supports differentials and axles, while in aerospace, it’s used in landing gear assemblies. Its ABEC-1 rating ensures consistent performance.

Essential Roles of 557-552DC Bearing
557-552DC Bearing is vital in industrial fans and pumps, where its standard radial clearance accommodates thermal expansion. The steel cage adds stability during high-speed operations.

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