NTN 7911 UADG/GMP42 - High-Precision Spindle Deep Groove Ball Bearing 55x80x13 mm

NTN 7911 UADG/GMP42 - High-Precision Spindle Deep Groove Ball Bearing 55x80x13 mm

Discover the NTN 7911 UADG/GMP42, a high-precision spindle deep groove ball bearing, engineered for demanding industrial applications. Featuring a sophisticated 25° contact angle, advanced P4/P2 tolerance class, and precision performance unmatched by ordinary bearings, this model exceeds rigorous standards for CNC spindles.

Key Features:

• Spindle-Grade Precision: Designed specifically for machine-tool spindles with superior accuracy (P4 for dimensional; P2 for running)

• Contact Angle (25°): Enhances rigidity and axial load capacity under high-speed rotations

• Compact Dimensions: 55 mm bore x 80 mm OD x 13 mm width—ideal for precise spindle use

• Polyamide Cage: Durable yet lightweight, optimized for high-speed rotation

• Open Configuration: No seals—suitable for oil-lubricated spindles, with lubricant applied during assembly

Ideal for:

• CNC machinery

• High-speed spindles

• Industrial tool systems demanding precision and stability

7. SEO-Driven FAQ

What does “UADG/GMP42” stand for?
It’s a high-accuracy designation within NTN’s spindle bearing series, suitable for P4/P2 class applications.

Why should I choose this over a standard ball bearing?
Its 25° contact angle and precision classification make it ideal for high-speed applications requiring axial load support and tight tolerances.

Is this bearing pre-lubricated?
Yes—it comes pre-oiled, though it’s left open for integration into oil-lubricated spindle housings.

What tolerance classes does it meet?
It meets P4 for dimensional accuracy and P2 for rotational precision.

Where is it commonly used?
In applications like machine tool spindles, premium CNC setups, and other high-precision rotary systems.