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Super Precision Angular Contact Ball Bearings 7021 CDGB/P4A

Super Precision Angular Contact Ball Bearings 7021 CDGB/P4A

The 7021 CDGB/P4A is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 21510 lbf and operates smoothly at speeds up to 16000 RPM.

Its 15° contact angle and phenolic cage ensure stable performance under light preload conditions. The open design allows for easy lubrication and maintenance.

This bearing is suitable for high-precision applications like machine tool spindles or robotics, where accuracy is key. It works well in temperatures ranging from -30°C to 110°C.

Weighing 1.59kg, it’s robust yet manageable for its size. Compatible with SKF bearings and available in matched sets for versatile mounting options.

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Product Parameters

  • Part Number 7021 CDGB/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 160 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 17.462 mm
  • Ball Qty 21
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 21510 lbf
  • Static Radial Load 21712 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 1.59 kg
Super Precision Angular Contact Ball Bearings 7021 CDGB/P4A dimension drawing
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Features

Performance Features of 7021 CDGB/P4A Bearing

7021 CDGB/P4A Bearing is crafted with chrome steel rings and balls, ensuring high precision and durability.
Its 15° contact angle allows for efficient handling of combined radial and axial loads.
The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a dynamic radial load capacity of 21510 lbf, it excels in demanding applications.

How Is 7021 CDGB/P4A Bearing Engineered for Reliability?

7021 CDGB/P4A Bearing features a P4A tolerance class, guaranteeing precise operation in high-speed conditions.
The open design and lubrication ensure smooth performance up to 16,000 rpm.
Its chrome steel construction resists wear, extending the bearing’s service life.
The universal matching capability allows flexible arrangement in back-to-back, face-to-face, or tandem configurations.

Built for Reliability: 7021 CDGB/P4A Bearing

7021 CDGB/P4A Bearing’s chrome steel components provide excellent strength and resistance to wear.
The light preload (Class B) ensures optimal performance with minimal friction.
It operates efficiently within a temperature range of -30°C to 110°C.
With a static radial load capacity of 21712 lbf, it is suitable for heavy-duty applications.

Steel vs Ceramic Bearings: Strengths of 7021 CDGB/P4A Bearing

7021 CDGB/P4A Bearing uses chrome steel for both rings and balls, offering a balance of durability and cost-effectiveness.
The phenolic cage reduces weight and friction compared to metal cages.
Its high-speed capability (16,000 rpm) makes it ideal for precision machinery.
The bearing’s universal matching feature provides versatility in various configurations.

Application

Key Fields for 7021 CDGB/P4A Bearing
In industrial settings, 7021 CDGB/P4A Bearing excels in high-speed spindles and precision machine tools, where its angular contact design ensures accurate radial and axial load handling. The phenolic cage reduces friction, enhancing efficiency in demanding operations.

Where Is 7021 CDGB/P4A Bearing Used?
Automotive applications like electric motor shafts benefit from 7021 CDGB/P4A Bearing’s light preload and high-speed capability. Its chrome steel construction provides durability in both passenger and commercial vehicles.

Optimized for Performance: 7021 CDGB/P4A Bearing
Medical imaging devices rely on 7021 CDGB/P4A Bearing for smooth, quiet operation during high-resolution scans. The P4A tolerance class guarantees consistent precision in critical healthcare equipment.

Automotive vs Aerospace: Applications of 7021 CDGB/P4A Bearing
While 7021 CDGB/P4A Bearing supports gearboxes in cars, it also performs well in aerospace actuators due to its lightweight design and high dynamic load capacity. The universal matching feature adds versatility across industries.

Practical Applications of 7021 CDGB/P4A Bearing
In robotics, 7021 CDGB/P4A Bearing ensures precise movement in articulated arms and joints. The open seal type allows for easy lubrication, extending service life in automated systems.

Q&A

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