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Super Precision Angular Contact Ball Bearings 71940 CD/P4A

Super Precision Angular Contact Ball Bearings 71940 CD/P4A

The 71940 CD/P4A is a super precision angular contact ball bearing with a 200mm bore and 280mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 46800 lbf and operates smoothly at speeds up to 7000 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.

With a P4 tolerance class (equivalent to ABEC-7), it offers excellent precision for demanding applications. This model is interchangeable with SKF bearings, making it a versatile choice for replacements.

Ideal for high-precision machinery like CNC spindles or grinding equipment, where accuracy and durability are crucial. Weighing 6.1kg, it’s a robust yet manageable component for industrial use.

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Product Parameters

  • Part Number 71940 CD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 200 mm
  • Bore Dia Tolerance -0.012mm to 0
  • Outer Dia 280 mm
  • Outer Dia Tolerance -0.013mm to 0
  • Width 38 mm
  • Width Tolerance -0.24mm to 0
  • Ball Dia 25.4 mm
  • Ball Qty 26
  • 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 46800 lbf
  • Static Radial Load 59625 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 7000 rpm
  • Weight 6.1 kg
  • Price（$） 792.459
Super Precision Angular Contact Ball Bearings 71940 CD/P4A dimension drawing
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Features

Performance Features of 71940 CD/P4A Bearing

71940 CD/P4A Bearing is crafted with chrome steel rings and balls, ensuring high precision and durability.
Its 15° contact angle allows efficient handling of combined radial and axial loads.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a dynamic radial load capacity of 46,800 lbf, it suits demanding applications.

71940 CD/P4A Bearing operates smoothly at speeds up to 7,000 rpm.
Its P4 tolerance class ensures exceptional accuracy for precision machinery.

The open design simplifies lubrication, extending service life.
It performs reliably in temperatures ranging from -30° to 110°C.

Application

Industrial Uses of 71940 CD/P4A Bearing
71940 CD/P4A Bearing is commonly 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, 71940 CD/P4A Bearing supports critical components like turbine shafts, thanks to its robust chrome steel construction. Its P4 tolerance class guarantees the precision needed for demanding flight conditions.

For automation systems, 71940 CD/P4A Bearing excels in robotic arms, providing smooth movement under angular loads. The open seal design allows for easy lubrication, extending service life in continuous operation.

Medical imaging devices benefit from 71940 CD/P4A Bearing’s low vibration and high rigidity, ensuring clear scans. The temperature stability also makes it reliable in various clinical environments.

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