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555-552D TDO (Two-Row Double-Outer Race) (Imperial)

555-552D TDO (Two-Row Double-Outer Race) (Imperial)

The 555-552D is a two-row tapered roller bearing with a 2″ bore and 4.875″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 74700 lbf and is designed for durability in demanding conditions.

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

This double-row construction provides extra stability, ideal for heavy machinery or automotive applications. It meets RoHS and REACH standards, ensuring safe and compliant use.

Weighing 10.36 lb, it’s robust yet manageable for its size. The standard radial clearance offers reliable performance without unnecessary complexity.

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Product Parameters

  • Part Number 555-552D
  • Brand TFL
  • Size 2" x 4.8750" x 1.444"
  • Bore Dia 2"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.8750"
  • 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 2.6"
  • 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 555
  • 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 10.36 lb

Features

Performance Features of 555-552D Bearing

555-552D Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 74,700 lbf, ensuring reliable performance in heavy-duty applications.
The double-row tapered roller design distributes loads evenly, enhancing durability and stability.
With a standard radial clearance, it provides smooth operation across various conditions.

How Is 555-552D Bearing Engineered for Reliability?

555-552D Bearing features a steel cage that maintains roller alignment, reducing wear and extending service life.
The double-row construction allows it to handle both radial and thrust loads efficiently.
Its chrome steel components resist wear, ensuring consistent performance even under stress.
The bearing operates smoothly within a temperature range of -30° to 110°C.

Designed for Durability: 555-552D Bearing

555-552D Bearing’s tapered roller design ensures optimal load distribution, minimising stress on individual components.
The chrome steel construction provides excellent resistance to wear and corrosion.
With a dynamic radial rating of 19,400 lbf for two rows, it excels in demanding environments.
Its standard radial clearance allows for easy installation and reliable operation.

Steel vs Ceramic Bearings: Strengths of 555-552D Bearing

555-552D Bearing uses chrome steel for both rollers and rings, offering a balance of strength and cost-effectiveness.
The steel cage ensures durability while maintaining precise roller alignment.
Its dynamic thrust rating of 6,590 lbf makes it suitable for applications requiring combined load handling.
The bearing’s open design simplifies lubrication and maintenance.

Application

Industrial Uses of 555-552D Bearing
The 555-552D 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. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 555-552D Bearing supports axle systems and wheel hubs, providing reliable performance under varying load conditions. The inch sizing makes it compatible with many North American vehicle models.

For industrial automation, 555-552D Bearing is a solid choice for conveyor systems and robotic arms, thanks to its open design and easy lubrication. The standard radial clearance allows for smooth operation in high-speed scenarios.

Where Is 555-552D Bearing Used?
You’ll often find 555-552D Bearing in agricultural machinery, where its tapered roller design handles uneven loads from tillers and harvesters. The steel cage adds extra strength for long-term use.

It’s also handy in forestry equipment, like log splitters, due to its ability to manage heavy radial and thrust loads. The ABEC-1 rating ensures consistent performance without unnecessary precision costs.

Built for Heavy-Duty Use: 555-552D Bearing
The 555-552D Bearing excels in applications like forklifts and cranes, where its double-row construction distributes weight evenly. The chrome steel rollers resist wear, even with frequent use.

In material handling systems, this bearing’s open design simplifies maintenance, while its temperature range suits both indoor and outdoor settings. The inch measurements make it versatile for various equipment types.

Automotive vs Aerospace: Applications of 555-552D Bearing
In automotive settings, 555-552D Bearing is ideal for truck differentials, handling high torque and variable speeds. Its robust design ensures longevity under constant stress.

For aerospace ground support equipment, this bearing’s combined load capacity makes it useful in aircraft tugs and loading systems. The standard radial clearance balances performance and ease of installation.

Q&A

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