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33890-33821D TDO (Two-Row Double-Outer Race) (Imperial)

33890-33821D TDO (Two-Row Double-Outer Race) (Imperial)

The 33890-33821D is a two-row tapered roller bearing with a 2.0625″ bore and 3.75″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 50800 lbf and is designed for long-lasting performance.

Its double-row construction provides extra stability, while the open design allows for easy lubrication. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is part of the 33800 series, featuring standard cups and a steel cage for durability. It’s ideal for heavy-duty applications like truck axles or industrial gearboxes.

Weighing 3.93 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a reliable choice for replacements or new installations.

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Product Parameters

  • Part Number 33890-33821D
  • Brand TFL
  • Size 2.0625" x 3.75" x 1.125"
  • Bore Dia 2.0625"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.75"
  • 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 2.4"
  • 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 33890
  • 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 3.93 lb

Features

Performance Features of 33890-33821D Bearing

33890-33821D Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 50,800 lbf, ensuring reliable performance in heavy-duty applications.

The double-row tapered roller design distributes loads evenly, reducing wear and extending service life.
With a standard radial clearance, it provides flexibility for various operating conditions.

33890-33821D Bearing operates efficiently within a temperature range of -30° to 110°C.
Its open design allows for easy lubrication, maintaining smooth operation over time.

Application

Industrial Uses of 33890-33821D Bearing
The 33890-33821D Bearing is commonly used in heavy machinery like construction equipment and mining tools, where its double-row design handles combined radial and thrust loads efficiently.
Its chrome steel construction ensures durability in harsh environments, making it a reliable choice for long-term use.

What Makes 33890-33821D Bearing a Preferred Choice?
In automotive applications, 33890-33821D Bearing supports wheel hubs and drivetrains, providing stability under heavy loads.
The inch sizing makes it compatible with many North American vehicle models, offering versatility in repairs and upgrades.

Built for Heavy-Duty Use: 33890-33821D Bearing
For industrial fans and pumps, 33890-33821D Bearing’s tapered roller design reduces friction, improving energy efficiency.
The open seal type allows for easy lubrication, extending the bearing’s service life in high-speed operations.

Automotive vs Aerospace: Applications of 33890-33821D Bearing
In automotive systems, 33890-33821D Bearing is ideal for axles and transmissions, where its load capacity is crucial.
While not typically used in aerospace, its precision makes it suitable for ground support equipment and heavy-duty machinery.

Key Fields for 33890-33821D Bearing
The 33890-33821D Bearing excels in agricultural machinery, such as tractors and harvesters, where rugged performance is needed.
Its standard radial clearance options provide flexibility for various operating conditions and maintenance schedules.

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