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

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

The 397-394DC is a double-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 open design allows easy lubrication, while the steel cage ensures smooth operation. The bearing works in temperatures from -30°C to 110°C, making it versatile for various conditions.

This model is part of the 395 series and comes with standard radial clearance. Ideal for heavy-duty applications like industrial gearboxes or vehicle axles where combined loads are common.

Weighing 4.26 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number 397-394DC
  • 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 394DC
  • 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

Performance Features of 397-394DC Bearing

397-394DC Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 38,700 lbf, ensuring reliable performance in demanding conditions.
The double-row tapered roller design enhances stability and load distribution.
With a temperature range of -30° to 110°C, it performs well in various environments.

How Is 397-394DC Bearing Engineered for Reliability?

397-394DC Bearing features a steel cage that keeps the rollers aligned, reducing wear and extending service life.
The double-row construction provides excellent radial and thrust load capacity.
Its standard radial clearance ensures smooth operation under different load conditions.
The chrome steel materials resist wear, making it a durable choice for heavy-duty applications.

Built for Durability: 397-394DC Bearing

397-394DC Bearing’s tapered roller design ensures efficient load handling and reduced friction.
The chrome steel rollers and rings enhance durability, even under high stress.
With a dynamic radial rating of 10,000 lbf for two rows, it delivers consistent performance.
Its open design allows for easy lubrication, maintaining optimal operation.

Steel vs Ceramic Bearings: Strengths of 397-394DC Bearing

397-394DC Bearing uses chrome steel for both rollers and rings, providing excellent strength and wear resistance.
The steel cage ensures proper roller alignment, reducing maintenance needs.
Its double-row design handles combined loads efficiently, making it versatile for various applications.
The standard radial clearance option allows for flexibility in different operating conditions.

Application

Industrial Uses of 397-394DC Bearing
The 397-394DC Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its double-row design handles combined loads effectively. Its chrome steel construction ensures durability in tough working conditions.

In automotive applications, 397-394DC Bearing supports wheel hubs and differential systems, providing reliable performance under both radial and thrust loads. The inch sizing makes it a good fit for American-made vehicles.

For industrial automation, 397-394DC Bearing is ideal for conveyor systems and robotic arms, where its open design allows for easy lubrication. The standard radial clearance offers flexibility in various operational setups.

Key Fields for 397-394DC Bearing
You’ll often find 397-394DC Bearing in agricultural machinery, like tractors and harvesters, where its tapered roller design manages heavy loads smoothly. The steel cage adds extra strength for long-term use.

In material handling systems, 397-394DC Bearing ensures smooth operation in forklifts and cranes. Its ABEC-1 rating provides sufficient precision for most industrial applications without unnecessary cost.

The bearing also works well in railway applications, particularly in axle boxes, where its temperature range suits varying environmental conditions. Maintenance is straightforward thanks to the open seal type.

What Makes 397-394DC Bearing a Preferred Choice?
397-394DC Bearing stands out in wind turbine gearboxes, where its double-row configuration handles fluctuating loads efficiently. The chrome steel rollers resist wear even in continuous operation.

For power transmission systems, this bearing offers a balanced performance in gear reducers and driveshafts. Its standard radial clearance adapts well to different alignment conditions.

In pulp and paper processing equipment, 397-394DC Bearing maintains consistent performance despite exposure to dust and moisture. The required lubrication helps extend service intervals.

Q&A

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