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385-384D TDO (Two-Row Double-Outer Race) (Imperial)

385-384D TDO (Two-Row Double-Outer Race) (Imperial)

The 385-384D is a two-row tapered roller bearing with a 2.1654″ bore and 3.937″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 42200 lbf and is designed for long-lasting performance in demanding conditions.

Its open design allows for easy lubrication, while the steel cage ensures smooth operation. The bearing works well in temperatures from -30°C to 110°C, making it suitable for various environments.

This double-row construction provides extra stability, ideal for heavy-duty applications like industrial gearboxes or axle systems. Weighing 3.45 lb, it’s robust yet manageable for its size.

Compliant with RoHS and REACH standards, it’s a reliable choice for replacements or new installations where combined loads are common. The standard radial clearance ensures easy fitting in most setups.

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Product Parameters

  • Part Number 385-384D
  • Brand TFL
  • Size 2.1654" x 3.937" x 0.864"
  • Bore Dia 2.1654"
  • 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 2.56"
  • 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 385
  • Cup Part Number 384D
  • 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 3.45 lb

Features

How Is 385-384D Bearing Engineered for Reliability?

385-384D 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 precision tolerances on bore and outer diameters enhance alignment, reducing wear during operation.
With a temperature range of -30° to 110°C, it performs reliably in varied conditions.

Steel cage construction maintains roller alignment, extending the bearing’s service life.
Lubrication is required, ensuring smooth operation and reduced friction over time.

Built for Efficiency: 385-384D Bearing

385-384D Bearing’s double-row design distributes loads evenly, improving efficiency in heavy-duty applications.
The standard radial clearance option allows for flexibility in different operational setups.

Chrome steel rollers and rings resist wear, maintaining performance under high stress.
Its ABEC-1 rating ensures consistent precision for industrial applications.

Why Choose 385-384D Bearing for Combined Loads?

385-384D Bearing handles both radial and thrust loads effectively, thanks to its tapered roller design.
The dynamic thrust rating of 3,810 lbf per row ensures reliable performance in demanding setups.

Standard cup type and open seal design simplify installation and maintenance.
With a weight of 3.45 lb, it balances strength and ease of handling.

385-384D Bearing’s wide temperature range makes it suitable for diverse environments.
Its compliance with RoHS and REACH standards ensures environmental and safety adherence.

Application

Industrial Uses of 385-384D Bearing
385-384D 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. The chrome steel construction ensures durability in tough working conditions.

In automotive applications, 385-384D Bearing supports axle systems and wheel hubs, providing reliable performance under varying loads. Its inch sizing makes it a good fit for American and British vehicle models.

For industrial automation, 385-384D Bearing is ideal for conveyor systems and robotic arms, where precision and load capacity are key. The open seal design allows for easy lubrication, extending its service life.

Where Is 385-384D Bearing Used?
You’ll often find 385-384D Bearing in agricultural machinery, like tractors and harvesters, where its tapered rollers handle heavy loads smoothly. The steel cage adds extra strength for long-term use.

In material handling equipment, 385-384D Bearing ensures smooth operation in forklifts and cranes. Its standard radial clearance makes it versatile for different load requirements.

Built for Heavy-Duty Use: 385-384D Bearing
385-384D Bearing excels in forestry equipment, such as log splitters and sawmills, thanks to its robust design. The ABEC-1 rating ensures consistent performance even in demanding environments.

For railway applications, 385-384D Bearing is used in bogies and drivetrains, where its combined load capacity is essential. The temperature range of -30° to 110°C makes it suitable for various climates.

Automotive vs Aerospace: Applications of 385-384D Bearing
In automotive settings, 385-384D Bearing is a go-to for drivetrains and differentials, offering reliable load handling. Its inch measurements align well with standard automotive parts.

For aerospace ground support equipment, 385-384D Bearing provides stability in load-bearing components. The chrome steel rollers ensure minimal wear over time.

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