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

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

The 557-552D is a two-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 in demanding conditions.

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

This model features a double-row construction, providing extra stability under heavy radial and thrust loads. Ideal for industrial machinery, gearboxes, or heavy-duty equipment where reliability is key.

Weighing 9.9 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe and dependable choice for replacements or new installations.

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Product Parameters

  • Part Number 557-552D
  • 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 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 9.9 lb

Features

How Does 557-552D Bearing Handle Combined Loads?

557-552D Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 74,700 lbf, ensuring reliable performance in demanding conditions.
The double-row tapered roller design distributes loads evenly, enhancing durability and reducing wear.
With a temperature range of -30° to 110°C, it performs well in various environments.

What Makes 557-552D Bearing Suitable for Heavy-Duty Applications?

557-552D Bearing features a robust steel cage, keeping the rollers aligned for smooth operation under heavy loads.
Its dynamic thrust rating of 6,590 lbf and radial rating of 19,400 lbf make it ideal for combined load scenarios.
The open design allows for easy lubrication, ensuring consistent performance over time.
Standard radial clearance options provide flexibility for different application needs.

Engineered for Precision: 557-552D Bearing

557-552D Bearing’s tapered roller design ensures precise load distribution, minimising friction and heat generation.
The chrome steel construction resists wear, extending the bearing’s service life in tough conditions.
With ABEC-1 rating, it balances accuracy and affordability for various industrial uses.
Its inch measurements make it compatible with imperial system machinery.

Structural Advantages of 557-552D Bearing

557-552D Bearing’s double-row construction provides increased load capacity without sacrificing space efficiency.
The standard cup type design simplifies installation and replacement in existing systems.
Chrome steel rollers and rings offer excellent durability, even in high-stress environments.
Weighing 9.9 lb, it maintains a good balance between strength and manageable size.

Why Choose 557-552D Bearing for Industrial Machinery?

557-552D Bearing handles combined loads effectively, making it versatile for various industrial applications.
Its temperature tolerance from -30° to 110°C ensures reliable operation in different working conditions.
The required lubrication system maintains smooth performance throughout its extended service life.
RoHS and REACH compliance demonstrates its adherence to environmental and safety standards.

Application

Industrial Uses of 557-552D Bearing
557-552D 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 tough working conditions.

In automotive applications, 557-552D Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it compatible with many North American vehicle models.

For industrial conveyor systems, 557-552D Bearing’s tapered roller design offers smooth operation and long service life. The open seal type allows for easy lubrication, reducing maintenance downtime.

Where Is 557-552D Bearing Used?
557-552D Bearing finds its place in agricultural machinery, such as tractors and harvesters, where its robust build withstands dusty and high-load environments. The standard radial clearance ensures consistent performance.

In mining equipment, 557-552D Bearing’s ability to handle dynamic radial loads makes it ideal for crushers and screens. The steel cage adds extra strength for prolonged use in abrasive conditions.

Built for Heavy-Duty Use: 557-552D Bearing
557-552D Bearing is a go-to choice for forestry machinery, where its tapered rollers manage heavy loads and shocks. The inch measurements simplify replacements in older equipment.

For railway applications, 557-552D Bearing provides stability in axle boxes, ensuring smooth rides even under high speeds. Its temperature range suits both cold and moderate climates.

Automotive vs Aerospace: Applications of 557-552D Bearing
In automotive settings, 557-552D Bearing excels in truck transmissions, offering reliable power transfer. Its ABEC-1 rating balances precision and cost-effectiveness for mass production.

For aerospace ground support equipment, 557-552D Bearing’s combined load capacity handles the demands of cargo loaders. The chrome steel rollers resist wear from frequent use.

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