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Super Precision Angular Contact Ball Bearings 71956 CD/P4ADBD

Super Precision Angular Contact Ball Bearings 71956 CD/P4ADBD

The 71956 CD/P4ADBD is a super precision angular contact ball bearing with a 280mm bore and 380mm outer diameter, crafted from high-grade chrome steel. Its 15° contact angle and heavy preload ensure stable performance under radial loads up to 106875 lbf.

The open design and phenolic cage allow for smooth operation at speeds up to 7500 RPM, while the matched pair arrangement (DB) enhances rigidity. It handles temperatures from -30°C to 110°C, making it suitable for demanding environments.

This bearing is interchangeable with SKF models, offering a reliable replacement option. Ideal for high-precision applications like machine tool spindles or industrial gearboxes where accuracy and durability are key.

Weighing 25.8kg, it’s a robust choice for heavy-duty machinery. Compliant with P4A tolerance standards for exceptional precision.

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Product Parameters

  • Part Number 71956 CD/P4ADBD
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 280 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 380 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 92 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 30.162 mm
  • Ball Qty 31
  • 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 Heavy / Class D
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 106875 lbf
  • Static Radial Load 205875 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 25.8 kg
Super Precision Angular Contact Ball Bearings 71956 CD/P4ADBD dimension drawing
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Features

How Does 71956 CD/P4ADBD Bearing Ensure Precision in High-Speed Applications?

71956 CD/P4ADBD Bearing features a 15° contact angle, optimised for handling combined radial and axial loads with high precision.
The matched arrangement of two bearings in a DB configuration enhances stability and load distribution.

Constructed from chrome steel rings and balls, 71956 CD/P4ADBD Bearing offers durability under dynamic radial loads up to 106875 lbf.
Its phenolic cage maintains ball alignment, reducing friction and wear during high-speed operation.

With a maximum speed of 7,500 rpm, 71956 CD/P4ADBD Bearing is suited for demanding applications requiring both speed and accuracy.
The P4A tolerance class ensures consistent performance in precision machinery.

71956 CD/P4ADBD Bearing operates efficiently within a temperature range of -30°C to 110°C, adapting to various working conditions.
Its heavy preload (Class D) further enhances rigidity and reduces vibration during use.

The open design simplifies lubrication, ensuring smooth operation while minimising maintenance requirements.
Weighing 25.8 kg, it balances robust construction with practical handling.

Application

Industrial Uses of 71956 CD/P4ADBD Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The heavy preload and P4A tolerance make it suitable for demanding industrial environments.

In aerospace applications, 71956 CD/P4ADBD Bearing supports critical components like turbine shafts, thanks to its high dynamic radial load capacity. The matched arrangement of two bearings provides stability under heavy angular loads.

For automation systems, 71956 CD/P4ADBD Bearing’s phenolic cage reduces friction in high-speed robotic arms. Its chrome steel construction ensures long-lasting performance in continuous operation scenarios.

Medical imaging devices benefit from 71956 CD/P4ADBD Bearing’s precision, as it maintains smooth rotation in CT scanners. The open design allows for easy lubrication, ensuring consistent performance over time.

In wind turbine gearboxes, 71956 CD/P4ADBD Bearing handles both radial and axial loads efficiently. The large bore size and metric measurements make it compatible with various European turbine designs.

Q&A

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