71901 ACE/HCP4A Super Precision Ball Bearings with Ceramic Balls

Designation: 71901 ACE/HCP4A

The other design: 7901 ACE/P4, 71901 ACE/HCP4, 7901 CE/P4

Interchange: GRW, HQW, Zwicker, SKF, FAG, NSK, GMN

Dimension: 12*24*6mm

Weight: 0.01kg

Application: Machine Tool Spindles, High Speed Applications

Type: Super Precision Angular Contact Ball Bearings

Elements: Ceramic Balls

Degree: 25° contact angle,

Why TKW 71901 ACE/HCP4A Hybrid Bearings?

1. X30,X30Cr13 (1.4028) or SV30 Stainless steel materials (high Nitrogen corrosion resistant steel)

2. Silicon Nitride Ceramic Balls (Si3N4)

3. PEEK or POM cage.or full balls without cage.

4. High Speed, No noise and High temperature Lubrication Grease & Oil

Suffix of Super Precision Angular contact ball bearings

CD 15° contact angle, high-capacity design

ACD 25° contact angle, high-capacity design

CE 15° contact angle, high-speed E design

FE 18° contact angle, high-speed E design

ACE 25° contact angle, high-speed E design

CB 15° contact angle, high-speed B design

FB 18° contact angle, high-speed B design

ACB 25° contact angle, high-speed B design

super-precision angular contact ball bearings includes bearings in the following dimension series:

• Ultra light 718 series    • Extremely light 719 series     • Light 70 series       • Robust 72 series

Application of High Speed Bearing 7901 ACE/HCP4A

What is Hybrid Bearings and Why Hybrid bearings?

Hybrid angular contact ball bearings (designation suffix HC) have rings made of bearing steel  and rolling elements made of bearing grade  silicon nitride (ceramic). As ceramic balls are  lighter and have a higher modulus of elasticity  and lower coefficient of thermal expansion  than steel balls, hybrid bearings can provide  the following advantages: 

• higher degree of rigidity 

• higher speed capability  

• reduced centrifugal and inertial forces  within the bearing 

• minimized stress at the outer ring rolling  contacts at high speeds 

• reduced frictional heat • less energy consumption 

• extended bearing and grease service life 

• less prone to skid smearing damage and  cage damage when subject to frequent rapid  starts and stops 

• less sensitive to temperature differences  within the bearing 

• more accurate preload/clearance control