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TS (Single Row Tapered Roller Bearings) (Imperial) 3379-3321

TS (Single Row Tapered Roller Bearings) (Imperial) 3379-3321

The 3379-3321 is a single-row tapered roller bearing with a 1.375″ bore and 3.0525″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 25800 lbf radially and 3130 lbf thrust, suitable for demanding applications.

Its open design allows for easy lubrication, while the steel cage ensures reliable performance. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, making it a practical choice for replacements. Ideal for use in gearboxes, axles, or industrial machinery where combined loads are common.

Weighing 1.5 lb, it offers a robust build for its size. Compliant with RoHS and REACH standards, it’s a safe and reliable option. The ABEC-1 rating ensures consistent performance for general industrial use.

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Product Parameters

  • Part Number 3379-3321
  • Brand TFL
  • Interchangeable Timken
  • Size 1.375" x 3.0525" x 1.1563"
  • Bore Dia 1.375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.0525"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.1965"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.1563"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 1.63"
  • Cone Backface Backing Diameter 1.89"
  • Cup Frontface Backing Diameter 2.95"
  • Cup Backface Backing Diameter 2.68"
  • Cage Cone Frontface Clearance 0.07"
  • Cage Cone Backface Clearance 0.06"
  • Effective Center Location -0.43"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3379
  • Cup Part Number 3321
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3300
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 25800 lbf
  • Static Radial Load 29100 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 6700 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3130 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 1.500 lb

Features

How Is 3379-3321 Bearing Engineered for Reliability?

3379-3321 Bearing features chrome steel rings and rollers, ensuring strong resistance to combined loads.
Its dynamic radial load capacity reaches 25,800 lbf, making it suitable for heavy-duty applications.

The steel cage maintains roller alignment, reducing friction and wear.
With a standard radial clearance, it offers reliable performance in various operating conditions.

3379-3321 Bearing operates efficiently within a temperature range of -30° to 110°C.
Its tapered roller design ensures smooth operation under both radial and thrust loads.

The open seal type allows for easy lubrication, enhancing its service life.
This bearing is interchangeable with Timken models, providing flexibility in replacements.

Application

Industrial Uses of 3379-3321 Bearing
The 3379-3321 Bearing is commonly used in heavy machinery like construction equipment, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

In automotive applications, 3379-3321 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. The imperial sizing makes it a straightforward replacement for many North American vehicle models.

For industrial fans and pumps, 3379-3321 Bearing’s open design allows easy lubrication, extending service life in continuous operation. The steel cage adds stability, reducing wear during high-speed rotations.

Where Is 3379-3321 Bearing Used?
You’ll often find 3379-3321 Bearing in agricultural machinery, such as tractors and harvesters, where its robust design handles rough conditions. The tapered rollers distribute loads evenly, reducing stress on components.

In conveyor systems, 3379-3321 Bearing supports heavy loads while maintaining smooth movement. Its standard radial clearance makes it adaptable to various operational temperatures and speeds.

Built for Heavy-Duty Use: 3379-3321 Bearing
The 3379-3321 Bearing excels in mining equipment, where its combined load capacity and chrome steel rollers withstand harsh conditions. Its ABEC-1 rating ensures consistent performance without over-engineering.

For gearboxes, 3379-3321 Bearing’s precise tolerances help maintain alignment under heavy torque. The steel cage keeps rollers evenly spaced, preventing premature wear during prolonged use.

Automotive vs Aerospace: Applications of 3379-3321 Bearing
In automotive drivetrains, 3379-3321 Bearing handles high radial and thrust loads, making it ideal for axles and transmissions. Its imperial sizing simplifies repairs for mechanics.

While not typically used in aerospace, 3379-3321 Bearing’s reliability suits ground support equipment like tugs and loaders. The temperature range ensures performance in both hot and cold environments.

Q&A

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