High Speed Thin Section Bearings 71802 ACD/HCP4 Hybrid Ball Bearings

Designation: 71802 ACD/HCP4

Grade: P4

The other design: 71802 ACD/P4, 71802 CD/HCP4, 71802 CD/P4

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

Dimension: 15*24*5mm

Weight: 0.06kg

Application: Machine Tool Spindles, High Speed Applications

Type: Super Precision Angular Contact Ball Bearings

Elements: Ceramic Balls

Degree: ACD, 25° contact angle, high-capacity design

CERAMIC BALLS 

Ceramic hybrid bearings deliver advanced performance  characteristics that can be transformational in machine tools. TKW offers silicon nitride (Si3N4) ceramic balls as a standard option  for angular contact ball bearings to achieve ultra-high machining  speeds, in addition to a considerable array of advantages: 

› Higher rigidity and rotational accuracy, enabling high-accuracy  machining 

› Lower sliding friction in high-speed applications 

› Lower heat generation

› Higher seizure resistance 

› Longer grease life due to low heat generation.

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 71802 ACD/HCP4

These super-precision, high-capacity, single row angular contact ball bearings accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only. They are designed to accommodate heavy loads at relatively high speeds under low to moderate operating temperatures. Being universally matchable, they can be used together in arrangements to provide effective load sharing, within a predetermined preload range, without the use of shims or similar devices.

• Very high running accuracy

• Very high load carrying capacity

• Relatively high speed and stiffness

• Universally matchable

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