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The NSK 7305B G is a specific type of angular contact ball bearing. Here’s a breakdown of its key features and specifications:

1. Bearing Type:

• Angular Contact Ball Bearing: Designed to handle combined radial and axial loads, typically used in applications where high precision and rigidity are required.

2. Series:

• 7305B: This indicates the bearing’s size and design. The “7305” refers to the bearing’s dimensions, while the “B” signifies a specific contact angle (typically 40° for NSK bearings).

3. Méretek:

• Inner Diameter (d): 25 Mm
• Outer Diameter (D): 62 Mm
• Width (B): 17 Mm

4. Contact Angle:

• The “B” in the designation typically indicates a 40° contact angle, which allows the bearing to handle higher axial loads compared to bearings with a smaller contact angle.

5. Precision and Clearance:

• G: This denotes the internal clearance or precision class. In NSK bearings, “G” usually refers to normal clearance (standard tolerance).

6. Material:

• Typically made from high-quality chrome steel (SUJ2) for durability and performance.

7. Applications:

• Angular contact ball bearings like the NSK 7305B G are commonly used in:
  • Machine tools
  • Pumps
  • Gearboxes
  • Automotive applications
  • High-speed spindles

8. Lubrication:

• These bearings are often pre-lubricated with grease, but the specific lubrication requirements depend on the application and operating conditions.

9. Mounting:

• Angular contact bearings are usually mounted in pairs (back-to-back or face-to-face) to handle axial loads in both directions.

If you need further details, such as load ratings, speed limits, or specific application guidance, consult the NSK product catalog or contact a bearing supplier. Let me know if you need more help!