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Super Precision Angular Contact Ball Bearings 7211 CD/P4ADBB

Super Precision Angular Contact Ball Bearings 7211 CD/P4ADBB

The 7211 CD/P4ADBB is a super precision angular contact ball bearing with a 55mm bore and 100mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 20340 lbf and spins smoothly at speeds up to 34000 RPM.

Its 15° contact angle and matched pair design (DB arrangement) provide excellent stability under angular loads. The phenolic cage ensures quiet operation and long service life.

This bearing comes preloaded for light applications, making it ideal for high-precision machinery like spindles or CNC tools. It performs reliably in temperatures from -30°C to 110°C.

Weighing 1.23kg, this set includes two bearings for balanced performance. Compliant with P4A tolerance standards, it’s interchangeable with SKF models for easy replacement.

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Product Parameters

  • Part Number 7211 CD/P4ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 100 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 42 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 14.288 mm
  • Ball Qty 15
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • 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 19125 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 1.23 kg
Super Precision Angular Contact Ball Bearings 7211 CD/P4ADBB dimension drawing
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Features

Performance Features of 7211 CD/P4ADBB Bearing

7211 CD/P4ADBB Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 20340 lbf.

The phenolic cage ensures smooth operation at high speeds, reaching up to 34,000 rpm.

With a matched arrangement of two bearings, it provides stability and precision in demanding conditions.

How Does 7211 CD/P4ADBB Bearing Ensure Precision?

7211 CD/P4ADBB Bearing’s P4A tolerance class guarantees high precision, ideal for critical applications.

The light preload (Class B) reduces vibration, ensuring smooth and accurate performance.

Its open design allows for easy lubrication, maintaining efficiency over time.

The 15-ball configuration balances load distribution, enhancing longevity.

Built for Reliability: 7211 CD/P4ADBB Bearing

7211 CD/P4ADBB Bearing operates reliably in temperatures from -30°C to 110°C, suitable for varied environments.

Its phenolic cage resists wear, contributing to a longer service life.

The matched bearing set (DB arrangement) ensures consistent performance under radial and axial loads.

With a static radial load capacity of 19125 lbf, it handles demanding conditions with ease.

Steel vs Ceramic Bearings: Strengths of 7211 CD/P4ADBB Bearing

7211 CD/P4ADBB Bearing’s chrome steel construction offers a balance of strength and cost-effectiveness.

It outperforms ceramic options in high-load scenarios, with a dynamic radial load of 20340 lbf.

The phenolic cage reduces friction, making it quieter than many alternatives.

Its precision engineering (P4A class) ensures consistent performance in high-speed applications.

Application

Industrial Uses of 7211 CD/P4ADBB Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides stability in demanding industrial environments.

Where Is 7211 CD/P4ADBB Bearing Used?
You’ll often find it in automotive transmissions, where its light preload and high-speed capability improve gear shifting performance. The phenolic cage material helps reduce friction and wear over time.

Built for Heavy-Duty Use: 7211 CD/P4ADBB Bearing
It’s a reliable choice for robotics, particularly in robotic arms that require smooth, precise movement. The chrome steel construction ensures durability even under continuous operation.

Medical vs Industrial: Where 7211 CD/P4ADBB Bearing Excels
In medical imaging devices, this bearing offers quiet operation and consistent performance. For industrial pumps, its high dynamic radial load capacity makes it a practical solution.

Automotive vs Aerospace: Applications of 7211 CD/P4ADBB Bearing
In cars, it supports wheel hubs and drivetrains, while in aircraft, it’s used in auxiliary systems requiring precision. The P4A tolerance class ensures reliability in both applications.

Q&A

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