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TS (Single Row Tapered Roller Bearings) (Imperial) 390A-393A

TS (Single Row Tapered Roller Bearings) (Imperial) 390A-393A

The 390A-393A is a single-row tapered roller bearing with a 2.5″ bore and 4.4375″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 22200 lbf radially and 3970 lbf thrust, making it versatile for various applications.

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

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 1.9 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for diverse environments.

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Product Parameters

  • Part Number 390A-393A
  • Brand TFL
  • Interchangeable Timken
  • Size 2.5" x 4.4375" x 0.8751"
  • Bore Dia 2.5"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.4375"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.866"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.625"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.8751"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.06"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 2.76"
  • Cone Backface Backing Diameter 2.87"
  • Cup Frontface Backing Diameter 4.15"
  • Cup Backface Backing Diameter 3.94"
  • Cage Cone Frontface Clearance 0.11"
  • Cage Cone Backface Clearance 0.05"
  • Effective Center Location -0.03"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 390A
  • Cup Part Number 393A
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 395
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 22200 lbf
  • Static Radial Load 28100 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 5760 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3970 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 1.900 lb

Features

Why Choose 390A-393A Bearing for Precision Tasks?

390A-393A Bearing is crafted with chrome steel rings and rollers, ensuring strength and durability for combined load applications.
Its dynamic radial load capacity reaches 22,200 lbf, making it suitable for heavy-duty operations.

The steel cage maintains roller alignment, reducing friction and extending the bearing’s lifespan.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

390A-393A Bearing’s standard radial clearance and ABEC-1 rating provide consistent precision.
Its open design simplifies lubrication, ensuring smooth operation over time.

Application

Industrial Uses of 390A-393A Bearing
390A-393A Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability in tough working conditions.
In automotive applications, 390A-393A Bearing fits well in wheel hubs and differential systems, providing reliable performance under both radial and thrust loads. Its inch sizing makes it a good match for American-made vehicles.
For industrial conveyors, 390A-393A Bearing’s open design allows for easy lubrication, extending service life in high-load environments. The steel cage adds extra strength, making it suitable for continuous operation.

What Makes 390A-393A Bearing a Preferred Choice?
390A-393A Bearing stands out in agricultural machinery, like tractors and harvesters, due to its ability to withstand heavy loads and harsh conditions. The tapered rollers distribute stress evenly, reducing wear.
In power transmission systems, 390A-393A Bearing ensures smooth operation for gears and pulleys, thanks to its precise engineering. The ABEC-1 rating guarantees consistent performance for general industrial use.

Built for Heavy-Duty Use: 390A-393A Bearing
390A-393A Bearing is ideal for railway applications, where its robust design handles the constant vibrations and loads of train axles. The chrome steel rollers provide long-lasting performance even under stress.
For forestry equipment, 390A-393A Bearing’s resistance to shock and impact makes it a reliable choice. The standard radial clearance allows for easy installation and maintenance in remote locations.

Automotive vs Aerospace: Applications of 390A-393A Bearing
In automotive systems, 390A-393A Bearing is often found in truck transmissions, where its combined load capacity ensures smooth gear shifts. The inch measurements simplify replacements in older models.
For aerospace ground support equipment, 390A-393A Bearing’s temperature tolerance makes it suitable for outdoor use in varying climates. The steel cage prevents deformation under heavy loads.

Q&A

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