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

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

The 388A-384XD is a double-row tapered roller bearing with a 2.265″ bore and 3.937″ outer diameter, built from sturdy chrome steel. It handles combined loads with a dynamic radial capacity of 42200 lbf and operates smoothly in temperatures from -30°C to 110°C.

Its open design allows for easy lubrication, while the steel cage ensures durability under heavy loads. The bearing is designed for standard radial clearance but can also be ordered in C3, C4, or C5 grades for specific needs.

This model is part of the 385 series, making it a reliable choice for industrial machinery or automotive applications where combined loads are common. Weighing 5.51 lb, it offers a robust solution without being overly heavy.

Compliant with RoHS and REACH standards, it’s a safe and dependable option for various engineering projects. The ABEC-1 rating ensures consistent performance for general industrial use.

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Product Parameters

  • Part Number 388A-384XD
  • 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 3.764"
  • 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 4.1389"
  • 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 3.74"
  • Cage Cone Backface Clearance 0.03"
  • Dynamic Radial Load 42200 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 388A
  • Cup Part Number 384XD
  • 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 5.51 lb

Features

Performance Features of 388A-384XD Bearing

388A-384XD Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 42,200 lbf, ensuring reliable performance in heavy-duty applications.

The double-row tapered roller design enhances stability and load distribution.
With a standard radial clearance, it provides flexibility for various operational needs.

388A-384XD Bearing operates efficiently within a temperature range of -30° to 110°C.
Its steel cage maintains roller alignment, reducing wear and extending service life.

The open seal design allows for easy lubrication and maintenance.
This bearing is ideal for applications requiring durability and precision under combined loads.

Application

Industrial Uses of 388A-384XD Bearing
The 388A-384XD Bearing is commonly used in heavy machinery, such as construction equipment and mining vehicles, where its double-row design handles combined radial and thrust loads effectively. Its chrome steel construction ensures durability in tough working conditions.

Where Is 388A-384XD Bearing Used?
You’ll often find the 388A-384XD 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: 388A-384XD Bearing
In industrial gearboxes, the 388A-384XD Bearing supports high-load applications, thanks to its robust chrome steel rollers and steel cage. Its inch sizing makes it a versatile choice for machinery requiring imperial measurements.

Automotive vs Aerospace: Applications of 388A-384XD Bearing
In automotive applications, the 388A-384XD Bearing is ideal for wheel hubs and differentials, offering smooth operation under stress. For aerospace, its precision and reliability make it suitable for landing gear systems.

Key Fields for 388A-384XD Bearing
The 388A-384XD Bearing excels in railway applications, such as axle boxes, where its double-row design ensures stability and longevity. Its standard radial clearance options provide flexibility for various operational needs.

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