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TS (Single Row Tapered Roller Bearings) (Imperial) 388A-383

TS (Single Row Tapered Roller Bearings) (Imperial) 388A-383

The 388A-383 is a single-row tapered roller bearing with a 2.265″ bore and 3.937″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 24200 lbf radially and 3810 lbf thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures durability under heavy use. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 1.5 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for most environments. The standard radial clearance ensures easy installation and maintenance.

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Product Parameters

  • Part Number 388A-383
  • Brand TFL
  • Interchangeable Timken
  • Size 2.265" x 3.937" x 0.8268"
  • Bore Dia 2.265"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.937"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.864"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.8268"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.8268"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.08"
  • Cone Frontface Backing Diameter 2.48"
  • Cone Backface Backing Diameter 2.76"
  • Cup Frontface Backing Diameter 3.70"
  • Cup Backface Backing Diameter 3.50"
  • Cage Cone Frontface Clearance 0.11"
  • Cage Cone Backface Clearance 0.03"
  • Effective Center Location -0.12"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 388A
  • Cup Part Number 383
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 385
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 24200 lbf
  • Static Radial Load 24100 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 6280 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3810 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 1.500 lb

Features

Performance Features of 388A-383 Bearing

388A-383 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 24,200 lbf, making it suitable for heavy-duty applications.

The single-row tapered roller design ensures smooth operation and efficient load distribution.
With a standard radial clearance, it provides reliable performance in various industrial settings.

388A-383 Bearing operates within a temperature range of -30° to 110°C, ensuring versatility.
The steel cage maintains roller alignment, reducing friction and extending service life.

This bearing requires lubrication to maintain optimal performance over time.
Its ABEC-1 rating ensures consistent precision for general industrial use.

Application

Industrial Uses of 388A-383 Bearing
388A-383 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 388A-383 Bearing supports wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it a preferred choice for North American vehicle models.

For industrial conveyor systems, 388A-383 Bearing’s open design allows for easy lubrication, extending service life in high-use scenarios. The steel cage adds stability, making it suitable for continuous operation.

Where Is 388A-383 Bearing Used?
You’ll often find 388A-383 Bearing in mining equipment, where its robust design handles heavy radial and thrust loads. The standard radial clearance ensures smooth operation even under stress.

In power transmission systems, 388A-383 Bearing’s tapered rollers reduce friction, improving efficiency. Its compatibility with Timken models makes it a versatile option for maintenance and replacements.

Built for Heavy-Duty Use: 388A-383 Bearing
388A-383 Bearing excels in forestry machinery, where its chrome steel rollers withstand harsh conditions. The ABEC-1 rating ensures consistent performance without unnecessary precision costs.

For railway applications, 388A-383 Bearing’s effective center location helps manage misalignment. The steel cage provides added strength, making it reliable for long-haul transport.

Automotive vs Aerospace: Applications of 388A-383 Bearing
In automotive systems, 388A-383 Bearing is ideal for drivetrains, offering a balance of strength and affordability. Its inch measurements align well with standard US automotive specs.

For aerospace ground equipment, 388A-383 Bearing’s temperature range suits varied climates. However, its ABEC-1 rating makes it more suited for auxiliary systems than flight-critical components.

Q&A

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