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A4138 Single Cups (Imperial)

A4138 Single Cups (Imperial)

The A4138 is a tapered roller bearing cup with an outer diameter of 1.3775 inches and a width of 0.3437 inches, made from sturdy chrome steel. It fits well with Timken bearings, offering a reliable alternative for replacements.

Designed for standard use, it operates smoothly in temperatures ranging from -30°C to 110°C. Its ABEC-1 rating ensures decent precision for general applications.

The cup features a simple yet effective design, with a backing diameter of 1.28 inches at the front and 1.14 inches at the back. This makes it suitable for various mechanical setups.

Ideal for industrial machinery or automotive systems where tapered roller bearings are needed. It’s compliant with RoHS and REACH standards, ensuring safe and eco-friendly use.

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Product Parameters

  • Part Number A4138
  • Brand TFL
  • Interchangeable Timken
  • Size 1.14" x 1.3775" x 0.3437"
  • Outer Dia 1.3775"
  • Outer Dia Tolerance +0.001" to 0
  • Cup Width 0.3437"
  • Cup Width Tolerance +0.002" to -0.01
  • Cup Backface ToClear Radius 0.05"
  • Cup Frontface Backing Diameter 1.28"
  • Cup Backface Backing Diameter 1.14"
  • System of Measurement Inch
  • Roller Bearing Type Tapered
  • Type Cups
  • Bearing Part Number A4044-A4138 , A4049-A4138 , A4050-A4138 , A4059-A4138 , A4050-A4138-B , A4059-A4138-B
  • Cups Type Standard
  • Series A4000
  • Ring Material Chrome Steel
  • Temperature Range -30° to 110 °C
  • ABEC Rating ABEC-1
  • RoHS Compliant
  • REACH Compliant

Features

How Is A4138 Bearing Engineered for Reliability?

A4138 Bearing is crafted from chrome steel, offering durability and resistance to wear in various applications.
Its tapered roller design ensures efficient load distribution, enhancing performance under stress.

The cup width tolerance of +0.002″ to -0.01″ allows for precise fitting, reducing installation errors.
With a temperature range of -30° to 110°C, A4138 Bearing performs reliably in diverse environments.

A4138 Bearing is interchangeable with Timken models, providing flexibility for replacements.
Its standard cup type and ABEC-1 rating make it suitable for general industrial use.

Application

Industrial Uses of A4138 Bearing
A4138 Bearing is commonly used in heavy machinery, such as construction equipment and agricultural gear, where its tapered design handles radial and axial loads efficiently. The chrome steel construction ensures durability in tough working conditions.

Where Is A4138 Bearing Used?
You’ll often spot A4138 Bearing in automotive wheel hubs, where its precise tolerances help maintain smooth rotation. Its compatibility with Timken models makes it a versatile choice for repairs and replacements.

Built for Heavy-Duty Use: A4138 Bearing
A4138 Bearing excels in industrial conveyor systems, thanks to its robust design and reliable performance. The inch sizing makes it a go-to option for machinery requiring imperial measurements.

Automotive vs Industrial: Applications of A4138 Bearing
In automotive settings, A4138 Bearing supports wheel assemblies, while in industrial environments, it’s ideal for gearboxes. Its tapered rollers ensure stability under varying load conditions.

Perfect Fit for Automation: A4138 Bearing
A4138 Bearing works well in automated production lines, where consistent performance is key. The ABEC-1 rating ensures sufficient precision for most industrial applications.

Q&A

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