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Super Precision Angular Contact Ball Bearings 7211 ACD/P4ADBDGMM

Super Precision Angular Contact Ball Bearings 7211 ACD/P4ADBDGMM

The 7211 ACD/P4ADBDGMM is a super precision angular contact ball bearing with a 55mm bore and 100mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 19170 lbf and operates smoothly at speeds up to 34000 RPM.

Its 25° contact angle and heavy preload (Class D) ensure stable performance under angular loads. The phenolic cage reduces friction and wear, while the open design allows for easy lubrication with grease.

This matched set of two bearings (DB arrangement) is ideal for high-precision applications like machine tool spindles or robotics. It works reliably in temperatures from -30°C to 110°C.

Weighing 1.23kg, it’s a robust choice for demanding environments. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 7211 ACD/P4ADBDGMM
  • 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 25°
  • 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 Heavy / Class D
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 19170 lbf
  • Static Radial Load 18338 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 1.23 kg
Super Precision Angular Contact Ball Bearings 7211 ACD/P4ADBDGMM dimension drawing
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Features

Performance Features of 7211 ACD/P4ADBDGMM Bearing

7211 ACD/P4ADBDGMM Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

The matched arrangement of two bearings in a DB configuration enhances stability and precision in high-speed operations.

With a dynamic radial load capacity of 19170 lbf, it delivers reliable performance under demanding conditions.

The phenolic cage ensures smooth operation and reduces friction, contributing to its longevity.

How Is 7211 ACD/P4ADBDGMM Bearing Engineered for Reliability?

7211 ACD/P4ADBDGMM Bearing features chrome steel rings and balls, providing excellent durability and resistance to wear.

Its P4A tolerance class ensures high precision, making it suitable for applications requiring tight tolerances.

The grease lubrication system maintains smooth operation, even at maximum speeds of 34,000 rpm.

This bearing operates efficiently within a temperature range of -30°C to 110°C, adapting to various environments.

Designed for Durability: 7211 ACD/P4ADBDGMM Bearing

7211 ACD/P4ADBDGMM Bearing’s heavy preload class D enhances its rigidity and performance under heavy loads.

The open seal type allows for easy maintenance and lubrication, reducing downtime.

With 15 balls of 14.288 mm diameter, it ensures even load distribution and minimises stress concentrations.

Its static radial load capacity of 18338 lbf makes it a dependable choice for precision machinery.

Ball vs Roller Bearings: Advantages of 7211 ACD/P4ADBDGMM Bearing

7211 ACD/P4ADBDGMM Bearing offers superior precision compared to roller bearings, thanks to its angular contact design.

The chrome steel construction provides better fatigue resistance, ensuring a longer service life.

Its compact size of 55 mm×100 mm×42 mm makes it ideal for space-constrained applications.

Weighing just 1.23 kg, it combines strength with lightweight efficiency.

Application

Industrial Uses of 7211 ACD/P4ADBDGMM Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The heavy preload and phenolic cage make it suitable for demanding industrial environments.

Where Is 7211 ACD/P4ADBDGMM Bearing Used?
You’ll often find it in automotive transmissions, where its 25° contact angle handles combined radial and axial loads effectively. The matched arrangement of two bearings provides stability in high-speed applications.

Built for Heavy-Duty Use: 7211 ACD/P4ADBDGMM Bearing
In robotics, this bearing supports articulated arms, offering smooth movement under heavy loads. Its chrome steel construction ensures long-lasting performance in continuous operation.

Medical vs Industrial: Where 7211 ACD/P4ADBDGMM Bearing Excels
While it’s reliable in medical imaging devices, its true strength lies in industrial gearboxes. The P4A tolerance class guarantees precision in both settings, but the grease lubrication suits industrial use better.

Automotive vs Aerospace: Applications of 7211 ACD/P4ADBDGMM Bearing
In cars, it’s ideal for wheel hubs, while aerospace applications benefit from its high-speed capabilities. The 34,000 rpm max speed makes it versatile across these sectors.

Q&A

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