USMA Bearing NN3020TBKRCC1P4 Double Row Cylindrical Roller Bearing NN3020TBKRCC1P4 NN3020 CNC Spindle Bearing

The USMA NN3020TBKRCC1P4 is a high-precision double-row cylindrical roller bearing designed for CNC spindles, machine tools, and other high-rigidity applications. Below is a detailed breakdown of its specifications and features:

Key Specifications:

Model:

NN3020TBKRCC1P4

NN3020  = Standard designation (double-row cylindrical, separable inner ring).

Dimensions (mm):

Bore (d): 100 mm

Outer Diameter (D): 150 mm

Width (B): 37 mm

Roller Type: Cylindrical rollers (double-row) → High radial load capacity.

Precision Grade: P4 (ABEC 7) → Ultra-high precision for spindle applications.

Cage Type: MB (Brass cage, machined) → High-speed stability & durability.

Internal Clearance: C1 (Tighter than normal) → Optimized for preload in spindle designs.

Lubrication: Typically grease or oil-lubricated (depends on application).