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390A-394YD TDO (Two-Row Double-Outer Race) (Imperial)

390A-394YD TDO (Two-Row Double-Outer Race) (Imperial)

The 390A-394YD is a double-row tapered roller bearing with a 2.5″ bore and 4.3307″ outer diameter, built from sturdy chrome steel for long-lasting performance. It handles combined loads with a dynamic radial capacity of 38700 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 variants for specific needs.

This model is part of the 395 series, offering reliable performance in demanding applications like heavy machinery or vehicle axles. Weighing 4.07 lb, it balances strength with manageable size. Compliant with RoHS and REACH standards, it’s a safe choice for industrial use.

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Product Parameters

  • Part Number 390A-394YD
  • Brand TFL
  • Size 2.5" x 4.3307" x 0.866"
  • Bore Dia 2.5"
  • 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 2.87"
  • 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 390A
  • Cup Part Number 394YD
  • 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 4.07 lb

Features

How Does 390A-394YD Bearing Handle Combined Loads?

390A-394YD Bearing is built with chrome steel rings and rollers, offering strong resistance to both radial and thrust loads.
Its dynamic radial load capacity reaches 38,700 lbf, ensuring reliable performance in demanding conditions.
The double-row tapered roller design distributes loads evenly, enhancing durability and stability.
With a temperature range of -30° to 110°C, it performs well in various environments.

Why Choose 390A-394YD Bearing for Heavy-Duty Applications?

390A-394YD Bearing features a steel cage that maintains roller alignment, reducing wear and extending service life.
Its dynamic thrust rating of 3,970 lbf per row makes it suitable for high-load scenarios.
The standard radial clearance allows for smooth operation, even under combined loads.
This bearing is designed for applications requiring consistent performance and reliability.

Engineered for Precision: 390A-394YD Bearing

390A-394YD Bearing’s double-row construction ensures balanced load distribution, minimising stress on individual rollers.
The chrome steel materials provide excellent resistance to wear and corrosion.
With an ABEC-1 rating, it offers precise performance for industrial applications.
Its open design simplifies lubrication, ensuring smooth operation over time.

Application

Industrial Uses of 390A-394YD Bearing
The 390A-394YD 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 demanding environments.

Where Is 390A-394YD Bearing Used?
You’ll often find 390A-394YD Bearing in agricultural machinery, like tractors and harvesters, where its tapered roller design provides reliable performance under heavy loads. The inch sizing makes it a good fit for North American equipment standards.

Built for Heavy-Duty Use: 390A-394YD Bearing
In industrial gearboxes, 390A-394YD Bearing offers smooth operation thanks to its standard radial clearance and open design. The steel cage adds extra strength, making it suitable for high-load applications.

Automotive vs Aerospace: Applications of 390A-394YD Bearing
In automotive drivetrains, 390A-394YD Bearing supports axles and differentials, while in aerospace, its precision meets the needs of landing gear systems. The ABEC-1 rating ensures consistent performance in both fields.

Perfect Fit for Automation: 390A-394YD Bearing
For automated conveyor systems, 390A-394YD Bearing provides reliable movement with its tapered roller design. The chrome steel rollers reduce friction, extending the bearing’s lifespan in continuous-use scenarios.

Q&A

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