📐 Basic Dimensions:
- Inner Diameter (d): 35 mm
- Outer Diameter (D): 80 mm
- Width (B): 22.75 mm
⚙️ Structure & Material Information:
- Design Type: Single-row tapered roller bearing
- Feature: Separable outer ring for easy installation
- Material: High carbon chromium bearing steel (GCr15)
- Cage Material: Pressed steel
- Precision Grade: ISO ABEC 1–ABEC 5
- Clearance: Factory pre-set
📦 Applications:
The KOYO 30307JR bearing is widely used in automotive wheel hubs, gearboxes, agricultural and construction machinery, and axle systems. It is designed to handle combined radial and axial loads under medium-to-heavy duty conditions.
🧠 Expert Insight:
Featuring a large roller-to-raceway contact area, this KOYO tapered roller bearing provides excellent load distribution and shock resistance. Its separable structure simplifies maintenance and replacement, making it a preferred choice in automotive and heavy machinery applications.