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

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

The 33890-33821DC is a double-row tapered roller bearing with a 2.0625″ bore and 3.75″ outer diameter, built from sturdy chrome steel for combined load handling. It supports dynamic radial loads up to 50,800 lbf and fits applications needing robust performance.

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

With standard radial clearance and ABEC-1 precision, it’s a reliable choice for industrial machinery or vehicle systems. The double-row construction provides extra stability for high-load scenarios.

Weighing 3.93 lb, it’s designed for long service life with proper maintenance. Compliant with RoHS and REACH standards, it’s a safe and practical option for replacements or upgrades.

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Product Parameters

  • Part Number 33890-33821DC
  • 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 33821DC
  • 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

How Does 33890-33821DC Bearing Handle Combined Loads?

33890-33821DC Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 50,800 lbf, ensuring reliable performance in demanding conditions.
The double-row tapered roller design distributes loads evenly, reducing wear and extending service life.
With a temperature range of -30° to 110°C, it performs well in various environments.

Why Choose 33890-33821DC Bearing for Heavy-Duty Applications?

33890-33821DC Bearing features a robust steel cage that keeps the rollers aligned, minimising friction and wear.
The chrome steel construction provides excellent durability, even under high-stress conditions.
Its standard radial clearance options allow for flexibility in different applications.
The open design simplifies lubrication, ensuring smooth operation over time.

Engineered for Reliability: 33890-33821DC Bearing

33890-33821DC Bearing’s double-row design enhances load distribution, improving overall stability.
The tapered rollers reduce friction, making it suitable for high-speed applications.
With a dynamic radial rating of 13,200 lbf for two rows, it handles heavy loads with ease.
Its ABEC-1 rating ensures consistent performance in precision tasks.

Material Composition of 33890-33821DC Bearing

33890-33821DC Bearing uses chrome steel for both rings and rollers, ensuring strength and durability.
The steel cage provides reliable support, keeping the rollers in place during operation.
This material combination resists wear, extending the bearing’s service life.
It also performs well within a broad temperature range, from -30° to 110°C.

Performance Features of 33890-33821DC Bearing

33890-33821DC Bearing’s tapered roller design efficiently manages combined radial and thrust loads.
Its dynamic thrust rating of 4,270 lbf ensures reliable performance in demanding applications.
The standard radial clearance options offer versatility for different operational needs.
With a weight of 3.93 lb, it balances strength and practicality.

Application

Industrial Uses of 33890-33821DC Bearing
The 33890-33821DC 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.

Where Is 33890-33821DC Bearing Used?
You’ll often find the 33890-33821DC Bearing in agricultural machinery, like tractors and harvesters, where its tapered roller design provides reliable performance under heavy loads.
The open seal type allows for easy lubrication, extending its service life.

Built for Heavy-Duty Use: 33890-33821DC Bearing
33890-33821DC Bearing is ideal for industrial gearboxes, offering smooth operation and high load capacity.
Its inch sizing makes it compatible with a variety of North American machinery standards.

Automotive vs Aerospace: Applications of 33890-33821DC Bearing
In automotive applications, 33890-33821DC Bearing supports drivetrain components, ensuring stability under varying loads.
For aerospace, its precision and reliability make it suitable for auxiliary systems requiring consistent performance.

Perfect Fit for Automation: 33890-33821DC Bearing
33890-33821DC Bearing works well in automated conveyor systems, where its double-row design reduces friction and improves efficiency.
The standard radial clearance ensures smooth operation in high-speed scenarios.

Q&A

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