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Super Precision Angular Contact Ball Bearings 71938 CD/P4ADBB

Super Precision Angular Contact Ball Bearings 71938 CD/P4ADBB

The 71938 CD/P4ADBB is a super precision angular contact ball bearing, measuring 190mm by 260mm by 66mm, crafted from high-quality chrome steel. It features a 15° contact angle and comes in a matched pair for balanced performance.

This bearing handles radial loads up to 62100 lbf and spins smoothly at speeds up to 16250 RPM. Its phenolic cage ensures durability, while the open design allows for easy lubrication.

The light preload (Class B) ensures smooth operation, making it ideal for high-precision applications. It works reliably in temperatures ranging from -30°C to 110°C.

Perfect for machine tools or spindle systems where accuracy and stability are key. Weighing 8.7kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards for consistent performance.

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Product Parameters

  • Part Number 71938 CD/P4ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 190 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 260 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 66 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 28
  • 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 62100 lbf
  • Static Radial Load 99000 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 8.7 kg
Super Precision Angular Contact Ball Bearings 71938 CD/P4ADBB dimension drawing
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Features

Performance Features of 71938 CD/P4ADBB Bearing

71938 CD/P4ADBB Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and wear.

With a dynamic radial load capacity of 62100 lbf, it handles demanding conditions reliably.

The P4A tolerance class guarantees high precision, making it suitable for critical operations.

Application

Industrial Uses of 71938 CD/P4ADBB Bearing
71938 CD/P4ADBB 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 for heavy cutting operations.

In aerospace applications, 71938 CD/P4ADBB Bearing supports components like helicopter transmissions, handling both radial and axial loads efficiently. Its phenolic cage reduces friction, making it suitable for high-speed environments.

For automation systems, 71938 CD/P4ADBB Bearing is ideal for robotic arms, offering smooth movement and precise positioning. The light preload ensures consistent performance in repetitive tasks.

Medical imaging devices benefit from 71938 CD/P4ADBB Bearing’s low noise and high precision, essential for clear scan results. The chrome steel construction also ensures long-term reliability in sterile environments.

In the energy sector, 71938 CD/P4ADBB Bearing is used in wind turbine gearboxes, where its durability withstands variable loads. The P4A tolerance class guarantees performance even under harsh conditions.

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