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Super Precision Angular Contact Ball Bearings 7021 ACDGB/P4A

Super Precision Angular Contact Ball Bearings 7021 ACDGB/P4A

The 7021 ACDGB/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 20340 lbf and operates smoothly at speeds up to 16000 RPM.

Its 25° contact angle and light preload ensure stable performance under angular loads, while the phenolic cage reduces friction. The open design allows for easy lubrication and maintenance.

This bearing is ideal for high-precision applications like machine tool spindles or robotics, where accuracy and speed are crucial. It can be arranged in back-to-back, face-to-face, or tandem configurations for versatile use.

Weighing 1.59kg, it meets P4A tolerance standards and works in temperatures from -30°C to 110°C. Interchangeable with SKF bearings, it offers a reliable solution for demanding industrial needs.

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Product Parameters

  • Part Number 7021 ACDGB/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 25°
  • 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 20340 lbf
  • Static Radial Load 20925 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 1.59 kg
  • Price（$） 326.43
Super Precision Angular Contact Ball Bearings 7021 ACDGB/P4A dimension drawing
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Features

Performance Features of 7021 ACDGB/P4A Bearing

7021 ACDGB/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls provide strong resistance to radial loads, with a dynamic capacity of 20340 lbf.

The phenolic cage ensures smooth operation at high speeds, reaching up to 16,000 rpm.

With a P4A tolerance class, it delivers precise performance in demanding conditions.

Application

Industrial Uses of 7021 ACDGB/P4A Bearing
In high-precision machine tools, 7021 ACDGB/P4A Bearing excels with its 25° contact angle, ensuring accurate radial and axial load handling. The open design and phenolic cage make it suitable for high-speed operations up to 16,000 rpm.

Where Is 7021 ACDGB/P4A Bearing Used?
You’ll often find 7021 ACDGB/P4A Bearing in automotive gearboxes, where its light preload and P4A tolerance class enhance performance. Its chrome steel construction also withstands the demanding conditions of racing or heavy-duty vehicles.

Built for Heavy-Duty Use: 7021 ACDGB/P4A Bearing
This bearing is a reliable choice for robotics, particularly in articulated arms requiring smooth, precise movement. The universal matching option allows flexible arrangements like back-to-back or tandem setups.

Medical vs Industrial: Where 7021 ACDGB/P4A Bearing Excels
In medical imaging devices, 7021 ACDGB/P4A Bearing offers quiet, vibration-free operation crucial for clear scans. Industrial pumps benefit equally from its dynamic radial load capacity of 20,340 lbf.

Perfect Fit for Automation: 7021 ACDGB/P4A Bearing
Automated production lines rely on 7021 ACDGB/P4A Bearing for consistent performance in high-speed pick-and-place systems. The metric dimensions ensure easy integration with European and Asian machinery standards.

Q&A

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