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Super Precision Angular Contact Ball Bearings 71948 CD/P4A

Super Precision Angular Contact Ball Bearings 71948 CD/P4A

The 71948 CD/P4A is a super precision angular contact ball bearing with a 240mm bore and 320mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 51525 lbf and operates smoothly at speeds up to 6000 RPM.

Its 15° contact angle and phenolic cage ensure stable performance under angular loads, while the open design allows for easy lubrication. The bearing works reliably in temperatures ranging from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for high-precision applications like machine tools or spindle systems where accuracy is key.

Weighing 8.5kg, it’s robust yet manageable for its size. Compliant with P4 tolerance class (ABEC-7) for superior precision.

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Product Parameters

  • Part Number 71948 CD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 240 mm
  • Bore Dia Tolerance -0.012mm to 0
  • Outer Dia 320 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 38 mm
  • Width Tolerance -0.24mm to 0
  • Ball Dia 25.4 mm
  • Ball Qty 31
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 51525 lbf
  • Static Radial Load 73125 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 6000 rpm
  • Weight 8.5 kg
  • Price（$） 566.829
Super Precision Angular Contact Ball Bearings 71948 CD/P4A dimension drawing
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Features

Performance Features of 71948 CD/P4A Bearing

71948 CD/P4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls ensure high durability under dynamic radial loads up to 51525 lbf.

Its phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 6,000 rpm, it balances precision and performance in demanding conditions.

The P4 tolerance class guarantees tight precision, making it suitable for high-accuracy machinery.
Its open design allows for easy lubrication, ensuring consistent performance over time.

Application

Common Applications of 71948 CD/P4A Bearing
71948 CD/P4A Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The phenolic cage reduces friction, making it suitable for high-speed operations.

In aerospace applications, 71948 CD/P4A Bearing handles radial and axial loads in turbine systems, thanks to its robust chrome steel construction. Its P4 tolerance class guarantees consistent performance under demanding conditions.

For robotics, 71948 CD/P4A Bearing provides smooth motion control in articulated arms and joints. The 15° contact angle offers a good balance between load capacity and rotational speed.

Medical imaging devices benefit from 71948 CD/P4A Bearing’s precision and reliability. The lubricated design ensures quiet operation, which is essential in sensitive diagnostic equipment.

In industrial pumps, 71948 CD/P4A Bearing withstands continuous radial loads while maintaining efficiency. Its open seal type allows for easy inspection and maintenance in harsh environments.

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