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397-394D TDO (Two-Row Double-Outer Race) (Imperial)

397-394D TDO (Two-Row Double-Outer Race) (Imperial)

The 397-394D is a two-row tapered roller bearing with a 2.36″ bore and 4.33″ outer diameter, built from sturdy chrome steel. It handles combined loads up to 38700 lbf and is designed for long-lasting performance.

Its double-row construction provides extra stability, while the open design allows for easy lubrication. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is part of the 395 series, with standard radial clearance and an ABEC-1 rating. Ideal for heavy-duty applications like truck axles or industrial gearboxes where combined loads are common.

Weighing 4.26 lb, it’s a robust choice for demanding environments. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number 397-394D
  • Brand TFL
  • Size 2.3622" x 4.3307" x 0.866"
  • Bore Dia 2.3622"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.3307"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 1.8125"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 0.866"
  • 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 2.72"
  • Cup Frontface Backing Diameter 4.12"
  • Cage Cone Backface Clearance 0.05"
  • Dynamic Radial Load 38700 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 397
  • Cup Part Number 394D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 395
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 5760 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 3970 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 10000 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 4.26 lb

Features

How Is 397-394D Bearing Engineered for Reliability?

397-394D 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 38,700 lbf.

The steel cage maintains roller alignment, reducing friction and extending service life.
With a standard radial clearance, it offers reliable performance in various industrial applications.

Designed for temperatures from -30° to 110°C, 397-394D Bearing performs well in demanding conditions.
Its open seal type allows for easy lubrication, ensuring smooth operation over time.

Application

Industrial Uses of 397-394D Bearing
The 397-394D 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 efficiently. Its chrome steel construction ensures durability in tough working conditions.

Where Is 397-394D Bearing Used?
You’ll often find 397-394D 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 standards.

Built for Heavy-Duty Use: 397-394D Bearing
In industrial gearboxes, 397-394D Bearing offers smooth operation thanks to its standard radial clearance and open design. The steel cage adds strength, making it suitable for high-load applications.

Automotive vs Aerospace: Applications of 397-394D Bearing
In automotive drivetrains, 397-394D Bearing supports axles and differentials, while in aerospace, its precision meets the demands of landing gear systems. The ABEC-1 rating ensures consistent performance in both fields.

Perfect Fit for Automation: 397-394D Bearing
For automated conveyor systems, 397-394D Bearing’s tapered rollers reduce friction, enhancing efficiency. Its temperature range of -30° to 110°C makes it versatile for various industrial environments.

Q&A

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