The SKF NN 3008 KTN/SP is a super-precision double-row cylindrical roller bearing with a tapered bore, designed for machine tool spindles and other high-speed, high-rigidity applications. It offers a balance of load capacity, rigidity, and speed, with easy mounting/dismounting thanks to its separable design.

Product Overview

• Model: NN 3008 KTN/SP
• Type: Super-precision cylindrical roller bearing
• Manufacturer: SKF
• Design: Double-row, separable, tapered bore
• Application: High-speed spindles, precision machinery

Key Specifications

• Bore Diameter (d): 40 mm
• Outside Diameter (D): 68 mm
• Width (B): 21 mm
• Dynamic Load Rating (Cr): ~53,000 N
• Static Load Rating (C0r): ~55,500 N
• Design Features:
  • Three flanges on the inner ring, no flanges on the outer ring
  • Accommodates axial displacement in both directions
  • Tapered bore for clearance/preload adjustment during mounting
• Weight: ~0.3–0.4 kg (varies slightly by supplier)