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33889-33821D TDO (Two-Row Double-Outer Race) (Imperial)

33889-33821D TDO (Two-Row Double-Outer Race) (Imperial)

The 33889-33821D is a two-row tapered roller bearing with a 2″ bore and 3.75″ outer diameter, built from sturdy chrome steel for long-lasting performance. It handles combined loads up to 50,800 lbf and is designed for smooth operation in demanding conditions.

Its double-row construction offers excellent radial and thrust capacity, with dynamic ratings of 13,200 lbf (radial) and 4,270 lbf (thrust) per 90 million revolutions. The open design allows for easy lubrication, essential for maintaining peak performance.

This bearing suits applications with heavy radial and axial loads, such as industrial gearboxes or vehicle axles. It operates reliably in temperatures from -30°C to 110°C and meets RoHS and REACH standards.

Weighing 4.02 lbs, it’s a robust choice for machinery requiring durable, high-capacity bearings. The standard radial clearance ensures compatibility with various setups, while the ABEC-1 rating balances precision and affordability.

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Product Parameters

  • Part Number 33889-33821D
  • Brand TFL
  • Size 2" x 3.7500" x 1.125"
  • Bore Dia 2"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.7500"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 2.0624"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 1.125"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.5"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.52"
  • Cup Frontface Backing Diameter 3.56"
  • Cage Cone Backface Clearance 0.04"
  • Dynamic Radial Load 50800 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 33889
  • Cup Part Number 33821D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 33800
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 7560 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 4270 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 13200 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 4.02 lb

Features

Performance Features of 33889-33821D Bearing

33889-33821D Bearing is built with chrome steel rings and rollers, ensuring strength and durability in combined load applications.
Its dynamic radial load capacity reaches 50,800 lbf, making it suitable for heavy-duty tasks.

The double-row tapered roller design enhances load distribution, improving performance and longevity.
With a standard radial clearance, it offers flexibility for various operational needs.

33889-33821D Bearing operates efficiently within a temperature range of -30° to 110°C.
Its open seal type allows for easy lubrication, ensuring smooth and reliable performance.

The steel cage maintains roller alignment, reducing friction and wear.
This bearing is ideal for applications requiring high radial and thrust load capacity.

Application

Industrial Uses of 33889-33821D Bearing
The 33889-33821D 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 in demanding environments.

Where Is 33889-33821D Bearing Used?
You’ll often find the 33889-33821D Bearing in automotive applications like truck wheel hubs, where its tapered roller design provides stability under heavy loads. The inch sizing makes it a good fit for American-made vehicles.

Built for Heavy-Duty Use: 33889-33821D Bearing
This bearing excels in industrial gearboxes, where its two-row configuration distributes loads evenly. The open seal type allows for easy lubrication, extending its service life in high-temperature conditions.

Automotive vs Aerospace: Applications of 33889-33821D Bearing
In automotive systems, the 33889-33821D Bearing supports heavy axles and transmissions, while in aerospace, it’s used in landing gear for its reliability. The standard radial clearance ensures smooth operation in both fields.

Essential Roles of 33889-33821D Bearing
The 33889-33821D Bearing is a key component in agricultural machinery, such as tractors, where its robust design handles uneven loads. Its steel cage adds strength, making it suitable for rough terrain.

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