INDICATIVE DESCRIPTION

Find out more about the 2MM308WICRDUL deep groove ball bearing high-precision

This type of bearing high-precision is designed for high-precision and high-speed applications (e.g. spindles, machine tools) due to its specific features such as the contact angle and internal geometry.

Thanks to its 15° contact angle, the bearing can accommodate both radial and axial loads, but its design is optimized for significant axial loads in one direction (depending on the duplex arrangement).

When installing, make sure to observe the following:

• The shaft and housing must meet high-precision tolerances.
• Ensure proper alignment and correct preload of the bearing set.
• Use the appropriate lubrication for high-speed, high-precision operation.

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High-precision bearings – Technical details by brand

The high-precision bearings offered by Texime are designed to deliver exceptional dimensional stability, smooth rotation, and extreme accuracy in the most demanding applications — such as machine tool spindles, high-speed motors, and measurement or automation systems.

Discover below the contact angles and cage types used by the main manufacturers.

1. Contact Angles

The contact angle determines a bearing’s ability to support axial loads and its maximum speed.
The smaller the angle, the higher the permissible rotational speed.
Each manufacturer uses its own designations.

FAG

• C = 15°
• D = 20°
• E = 25°
• B = 40°

For more information, please refer to the Schaeffler high-precision bearing catalog.

NSK (Series 70xx / 72xx / 79xx)

• C = 15°
• AS = 25°
• A = 30°

SKF

• CD = 15°
• AC = 25°
• F = 18°
• AB = 20° (for series 70 A and 719 A)

RHP

• E = 25°

SNFA

• 1 = CD = 15°
• 3 = AC = 25°

SNR/NTN

• C = 15°
• H, AD = 25°
• B = 40°

2. Cage Types

The cage retains the rolling elements and influences the bearing’s speed capacity, thermal resistance, and durability.
Each manufacturer uses its own cage designations.

FAG

• TVP = Plastic
• T = Laminated fabric

NSK

• TR = Phenolic resin
• MB = Brass cage
• TB = PPS

SKF

• For further details, please refer to the SKF high-precision bearing catalog.

RHP

• T = phenolic

SNFA

• C = Phenolic resin

SNR/NTN

• T1, G1 = phenolic
• T2 = polyamide
• V = laminated phenolic

Fafnir

• CR = phenolic

Typical Applications

These high-precision bearings are ideally suited for:

• Machine tools and milling spindles

• Measuring equipment and robotics

• Precision electric motors

• Industrial transmission systems