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388A-384DC TDO (Two-Row Double-Outer Race) (Imperial)

388A-384DC TDO (Two-Row Double-Outer Race) (Imperial)

The 388A-384DC is a two-row tapered roller bearing with a 2.265″ bore and 3.937″ outer diameter, built from sturdy chrome steel for long-lasting performance. It handles combined loads with a dynamic radial capacity of 42,200 lbf and operates smoothly in temperatures from -30°C to 110°C.

Its double-row design provides extra stability, while the open seal allows for easy lubrication. The standard radial clearance ensures reliable performance in various conditions, with options for C3, C4, or C5 clearances if needed.

This bearing is ideal for heavy-duty applications like industrial gearboxes or vehicle axles where both radial and thrust loads are present. Weighing 3.27 lb, it’s robust yet manageable for its size.

Compliant with RoHS and REACH standards, it’s a dependable choice for replacements or new installations. The ABEC-1 rating ensures consistent quality for general industrial use.

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Product Parameters

  • Part Number 388A-384DC
  • Brand TFL
  • Size 2.265" x 3.937" x 0.864"
  • Bore Dia 2.265"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.937"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.6875"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.864"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.0624"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.76"
  • Cup Frontface Backing Diameter 3.68"
  • Cage Cone Backface Clearance 0.03"
  • Dynamic Radial Load 42200 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 388A
  • Cup Part Number 384DC
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 385
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 6280 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 3810 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 10900 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 3.270 lb

Features

How Is 388A-384DC Bearing Engineered for Reliability?

388A-384DC Bearing features a double-row tapered roller design, providing strong resistance to combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 42,200 lbf.

The steel cage maintains roller alignment, reducing friction and extending service life.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

Optimised lubrication channels ensure smooth operation, even under heavy loads.
The standard radial clearance options offer flexibility for different applications.

Application

Industrial Uses of 388A-384DC Bearing
The 388A-384DC 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 efficiently. Its chrome steel construction ensures durability in demanding environments.

Where Is 388A-384DC Bearing Used?
You’ll often find the 388A-384DC Bearing in agricultural machinery, like tractors and harvesters, where its tapered roller design provides reliable performance under varying loads. The inch sizing makes it a good fit for North American equipment.

Built for Heavy-Duty Use: 388A-384DC Bearing
The 388A-384DC Bearing excels in industrial gearboxes, offering smooth operation even under high radial loads. Its open design allows for easy lubrication, extending its service life in continuous-use applications.

Automotive vs Aerospace: Applications of 388A-384DC Bearing
In automotive systems, the 388A-384DC Bearing supports wheel hubs and differentials, while in aerospace, it’s used in auxiliary systems where precision and reliability are key. The standard radial clearance ensures consistent performance.

Essential Roles of 388A-384DC Bearing
The 388A-384DC Bearing is a go-to choice for conveyor systems, thanks to its ability to handle heavy loads and resist wear. Its steel cage adds extra strength, making it suitable for long-term industrial use.

Q&A

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