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Super Precision Angular Contact Ball Bearings S71920 CB/P4A

Super Precision Angular Contact Ball Bearings S71920 CB/P4A

The S71920 CB/P4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from high-quality chrome steel. Its 15° contact angle and sealed design ensure smooth operation under angular loads.

This bearing handles dynamic radial loads up to 4860 lbf and spins at speeds up to 12,000 RPM. Preload options and matched arrangements are available for enhanced performance in demanding setups.

The phenolic cage reduces friction, while the lubricated design simplifies maintenance. It operates reliably in temperatures from -30°C to 110°C.

Ideal for high-precision applications like machine tool spindles or robotics, where accuracy and durability are key. Weighing 0.88kg, it’s a robust yet manageable choice for industrial use.

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Product Parameters

  • Part Number S71920 CB/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.009mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 37
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 4860 lbf
  • Static Radial Load 5040 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 12000 rpm
  • Weight 0.88 kg
  • Price（$） 1443.438
Super Precision Angular Contact Ball Bearings S71920 CB/P4A dimension drawing
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Features

Performance Features of S71920 CB/P4A Bearing

S71920 CB/P4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel construction ensures durability and resistance to wear under high radial loads.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 12,000 rpm, it delivers reliable performance in high-speed scenarios.

Preloaded and sealed, S71920 CB/P4A Bearing requires minimal maintenance while offering consistent precision.
Its P4 tolerance class guarantees high accuracy, making it suitable for demanding industrial uses.

Application

Common Applications of S71920 CB/P4A Bearing
S71920 CB/P4A Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction helps maintain lubrication, reducing maintenance needs in demanding environments.

In robotics, S71920 CB/P4A Bearing supports articulated arms, providing smooth movement and long service life. Its phenolic cage offers excellent heat resistance, making it suitable for continuous operation.

For aerospace applications, S71920 CB/P4A Bearing handles both radial and axial loads in components like landing gear systems. The P4 tolerance class ensures reliability in critical flight conditions.

Automotive enthusiasts appreciate S71920 CB/P4A Bearing in performance gearboxes, where its high-speed capability enhances shifting precision. The chrome steel construction also resists wear under heavy loads.

In medical imaging devices, S71920 CB/P4A Bearing’s quiet operation and precision contribute to clearer scan results. Its lubricated design ensures consistent performance over extended periods.

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