📐 Basic Dimensions:

  • Bore Diameter (d): Approx. 40 mm
  • Outer Diameter (D): Approx. 67 mm
  • Width (B): Approx. 18.45 mm
  • Reference:
    NSK Catalog
    FSK Bearings

⚙️ Structural & Material Information:

  • Design Type: Single-row ball bearing
  • Application Type: Compatible with hydraulic or mechanical clutch systems
  • Material: High-carbon chromium bearing steel (GCr15)
  • Cage Material: Pressed steel
  • Precision Grade: ISO ABEC 3 to ABEC 7 (customizable)
  • Internal Clearance: Usually C0–C3 (standard to loose clearance)
  • Application Scope:
    Suited for a variety of mainstream Japanese passenger vehicles and light-duty trucks, commonly found in Nissan, Toyota, Honda, Mazda, etc.

🧠 Expert Commentary:

The TK40‑1A clutch release bearing is a standard-size model widely used in compact to mid-range manual transmission systems. Its robust single-row ball structure and heat-treated steel ensure high durability under radial and axial loads. Its dimensional stability and customizable clearance make it adaptable across various vehicle platforms.