Type: High Precision Angular Contact Ball Bearings
Interchange: NSK
Dimension: 10*22*6mm
Contact Angle: A5: 25°
Weight: 0.08kg
Application: High Speed Applications
Elements: Ceramic Balls
Abutment and Fillet Dimensions
da(min.)
12.5
mm
Diameter of Shaft Abutment
Da(max.)
19.5
mm
Diameter of Housing Abutment
Db(max.)
20.8
mm
Diameter of Housing Abutment
ra(max.)
0.3
mm
Radius of Shaft or Housing Fillet
rb(max.)
0.15
mm
Radius of Shaft or Housing Fillet
Performance
Pa
1.71
kN
Permissible Axial Load
Preload,Rigidity(DB and DF arrangement)
Preload
Axial Rigidity
Measured axial clearance
EL
8.5N
26N/μm
2μm
L
16N
32N/μm
1μm
M
59N
53N/μm
-3μm
H
103N
66N/μm
-6μm
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.
Hybrid ceramic ball bearings, thanks to their unique material properties, have been widely used in a variety of high-tech fields:
-1- Aerospace
Under high-speed, high-temperature environments, the lightweight (density is only 40% of steel) and high-temperature stability (withstands 1000°C) of silicon nitride ceramic balls significantly improve the reliability and lifespan of aircraft propulsion systems.
-2- New Energy Vehicles
Suitable for motor bearings, their low density reduces centrifugal force and improves speed performance; their insulation properties prevent galvanic corrosion and extend the lifespan of electric drive systems.
-3- Precision Medical Equipment
In MRI equipment, the insulation and low magnetic loss of ceramic balls ensure imaging accuracy; surgical robot joints rely on their high wear resistance to achieve millions of precise movements.
-4- Semiconductors and Vacuum Equipment
Silicon nitride's corrosion resistance and lubrication-free self-lubricating properties make it a key component in vacuum pumps and chip manufacturing equipment.
-5- Wind Power and Industrial Robots
Stable performance remains stable in extreme temperatures (-60°C to 800°C), adapting to the low-temperature environments of wind turbine towers and the high-load scenarios of industrial robots.
-6- High-speed, low-noise equipment
For precision instruments or high-speed motors, optimizing surface precision reduces operating noise while also providing insulation to prevent spark interference.
Extended service life
TKW hybrid bearings provide superior grease life, especially in situations with difficult operating conditions.
Small to medium sized sealed TKW hybrid deep groove ball bearings are lubricated with TKW electric motor grease. Tests have shown that these bearings provide a longer service life than all-steel bearings.
What is Hybrid Bearings and Why Hybrid bearings?
Hybrid angular contact ball bearings (designation suffix HC, Or the other suffix) 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
Designation: 7900A5SN24TRSUMP4Y
Type: High Precision Angular Contact Ball Bearings
Interchange: NSK
Dimension: 10*22*6mm
Contact Angle: A5: 25°
Weight: 0.08kg
Application: High Speed Applications
Elements: Ceramic Balls
Abutment and Fillet Dimensions
da(min.)
12.5
mm
Diameter of Shaft Abutment
Da(max.)
19.5
mm
Diameter of Housing Abutment
Db(max.)
20.8
mm
Diameter of Housing Abutment
ra(max.)
0.3
mm
Radius of Shaft or Housing Fillet
rb(max.)
0.15
mm
Radius of Shaft or Housing Fillet
Performance
Pa
1.71
kN
Permissible Axial Load
Preload,Rigidity(DB and DF arrangement)
Preload
Axial Rigidity
Measured axial clearance
EL
8.5N
26N/μm
2μm
L
16N
32N/μm
1μm
M
59N
53N/μm
-3μm
H
103N
66N/μm
-6μm
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.
Hybrid ceramic ball bearings, thanks to their unique material properties, have been widely used in a variety of high-tech fields:
-1- Aerospace
Under high-speed, high-temperature environments, the lightweight (density is only 40% of steel) and high-temperature stability (withstands 1000°C) of silicon nitride ceramic balls significantly improve the reliability and lifespan of aircraft propulsion systems.
-2- New Energy Vehicles
Suitable for motor bearings, their low density reduces centrifugal force and improves speed performance; their insulation properties prevent galvanic corrosion and extend the lifespan of electric drive systems.
-3- Precision Medical Equipment
In MRI equipment, the insulation and low magnetic loss of ceramic balls ensure imaging accuracy; surgical robot joints rely on their high wear resistance to achieve millions of precise movements.
-4- Semiconductors and Vacuum Equipment
Silicon nitride's corrosion resistance and lubrication-free self-lubricating properties make it a key component in vacuum pumps and chip manufacturing equipment.
-5- Wind Power and Industrial Robots
Stable performance remains stable in extreme temperatures (-60°C to 800°C), adapting to the low-temperature environments of wind turbine towers and the high-load scenarios of industrial robots.
-6- High-speed, low-noise equipment
For precision instruments or high-speed motors, optimizing surface precision reduces operating noise while also providing insulation to prevent spark interference.
Extended service life
TKW hybrid bearings provide superior grease life, especially in situations with difficult operating conditions.
Small to medium sized sealed TKW hybrid deep groove ball bearings are lubricated with TKW electric motor grease. Tests have shown that these bearings provide a longer service life than all-steel bearings.
What is Hybrid Bearings and Why Hybrid bearings?
Hybrid angular contact ball bearings (designation suffix HC, Or the other suffix) 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
