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

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

The 385X-384DC is a double-row tapered roller bearing with a 2.1654″ bore and 3.937″ outer diameter, built from sturdy chrome steel. It handles combined loads, with a dynamic radial capacity of 42200 lbf and a two-row radial rating of 10900 lbf.

Its open design allows for easy lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures from -30°C to 110°C, making it versatile for various conditions.

This model features standard radial clearance and is ABEC-1 rated for reliable performance. Ideal for heavy-duty applications like truck axles or industrial gearboxes where combined loads are common.

Weighing 3.44 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for most industrial environments.

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Product Parameters

  • Part Number 385X-384DC
  • 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 2.64"
  • 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 385X
  • Cup Part Number 384DC
  • 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 3.44 lb

Features

How Is 385X-384DC Bearing Engineered for Reliability?

385X-384DC Bearing features a double-row tapered roller design, providing robust support for combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 42,200 lbf.
The steel cage maintains roller alignment, reducing friction and extending bearing life.
With a standard radial clearance and ABEC-1 rating, it offers consistent performance in various applications.

What Makes 385X-384DC Bearing Suitable for High-Temperature Applications?

385X-384DC Bearing operates reliably in temperatures ranging from -30° to 110°C, making it versatile for different environments.
The chrome steel rings and rollers resist wear, even under heavy loads and high speeds.
Its open design allows for easy lubrication, ensuring smooth operation over time.
The bearing’s double-row construction enhances stability, reducing the risk of misalignment.

Built for Durability: 385X-384DC Bearing

385X-384DC Bearing is constructed with high-quality chrome steel, offering excellent resistance to wear and fatigue.
Its tapered roller design efficiently handles combined loads, with a dynamic radial rating of 10,900 lbf for two rows.
The steel cage ensures proper roller spacing, minimising friction and noise.
With standard radial clearance options, it adapts to various operational requirements.

Steel vs Ceramic Bearings: Strengths of 385X-384DC Bearing

385X-384DC Bearing uses chrome steel for both rings and rollers, providing a balance of strength and cost-effectiveness.
This material choice ensures high load capacity and long service life, even in demanding conditions.
The steel cage adds durability, maintaining roller alignment under stress.
Its open design simplifies maintenance, making it a practical choice for industrial applications.

Application

Industrial Uses of 385X-384DC Bearing
385X-384DC Bearing is commonly used in heavy machinery, such as construction equipment and mining tools, where its double-row design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability in demanding environments.

Where Is 385X-384DC Bearing Used?
You’ll often find 385X-384DC Bearing in automotive applications like truck wheel hubs, where its tapered roller design provides stability under heavy loads. The inch sizing makes it a good fit for North American vehicle standards.

Built for Heavy-Duty Use: 385X-384DC Bearing
385X-384DC Bearing excels in industrial gearboxes, offering reliable performance even under high stress. Its open design allows for easy lubrication, extending service life in continuous operation.

Automotive vs Aerospace: Applications of 385X-384DC Bearing
In automotive systems, 385X-384DC Bearing supports axles and transmissions, while in aerospace, it’s used in landing gear for its robust load capacity. The standard radial clearance ensures smooth operation in both fields.

Perfect Fit for Automation: 385X-384DC Bearing
385X-384DC Bearing works well in automated conveyor systems, where its double-row construction reduces friction and wear. The steel cage adds extra strength for long-term reliability.

Q&A

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